225 = section width
The first number is the tire width in millimeters. A 225 tire is about 8.9 inches wide before wheel and load variations.
Read a tire size like 225/80R16, estimate the overall diameter, and compare common sizes before you measure clearance. A 225/80R16 calculates to about 30.2 inches tall, with section width, sidewall height, rim size, circumference, and revs-per-mile shown in the chart below.
Calculated tire dimensions are estimates. Actual dimensions vary by manufacturer, tread design, load, wheel width, inflation, and vehicle clearance. Always verify real clearance on the vehicle before buying or installing tires.
Download or print this tire size chart for quick reference in your garage, workshop, or shop.
Quick answer
225/80R16
about 30.2 inches tall, 8.9 inches wide, on a 16-inch rim.
235/65R17
about 29.0 inches tall, 9.3 inches wide, on a 17-inch rim.
265/70R17
about 31.6 inches tall, 10.4 inches wide, on a 17-inch rim.
285/75R16
about 32.8 inches tall, 11.2 inches wide, on a 16-inch rim.
Use these as calculated references, not fitment guarantees. Real tire size can vary by brand, load, wheel width, and vehicle clearance.
In 225/80R16, 225 is the section width in millimeters, 80 is the aspect ratio, R means radial construction, and 16 is the wheel/rim diameter in inches. The overall diameter formula is below.
The first number is the tire width in millimeters. A 225 tire is about 8.9 inches wide before wheel and load variations.
The second number is sidewall height as a percentage of width. In 225/80R16, the sidewall is 80% of 225mm.
R means radial tire construction. It is not the rim size.
The final number is the wheel diameter in inches. A 225/80R16 tire fits a 16-inch rim.
overall diameter = rim diameter + 2 × sidewall height. For metric tire codes, sidewall height = section width × aspect ratio. Convert the sidewall from millimeters to inches before adding it to the rim diameter. For 225/80R16, the calculated diameter is about 30.2 inches.
Stock / Passenger • Rims: 15-18" • A4
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Rim: common • Width: standard • A4
| Metric Size | Diam (") | Approx. Size |
|---|---|---|
| 195/30R15 | 19.6" | 19.6 x 7.7 |
| 205/30R15 | 19.8" | 19.8 x 8.1 |
| 215/30R15 | 20.1" | 20.1 x 8.5 |
| 225/30R15 | 20.3" | 20.3 x 8.9 |
| 195/35R15 | 20.4" | 20.4 x 7.7 |
| 235/30R15 | 20.6" | 20.6 x 9.3 |
| 195/30R16 | 20.6" | 20.6 x 7.7 |
| 205/35R15 | 20.6" | 20.6 x 8.1 |
| 245/30R15 | 20.8" | 20.8 x 9.6 |
| 205/30R16 | 20.8" | 20.8 x 8.1 |
| 215/35R15 | 20.9" | 20.9 x 8.5 |
| 255/30R15 | 21.0" | 21 x 10 |
| 215/30R16 | 21.1" | 21.1 x 8.5 |
| 195/40R15 | 21.1" | 21.1 x 7.7 |
| 225/35R15 | 21.2" | 21.2 x 8.9 |
| 225/30R16 | 21.3" | 21.3 x 8.9 |
| 195/35R16 | 21.4" | 21.4 x 7.7 |
| 205/40R15 | 21.5" | 21.5 x 8.1 |
| 235/35R15 | 21.5" | 21.5 x 9.3 |
| 235/30R16 | 21.6" | 21.6 x 9.3 |
| 195/30R17 | 21.6" | 21.6 x 7.7 |
| 205/35R16 | 21.6" | 21.6 x 8.1 |
| 245/35R15 | 21.8" | 21.8 x 9.6 |
| 215/40R15 | 21.8" | 21.8 x 8.5 |
| 245/30R16 | 21.8" | 21.8 x 9.6 |
| 205/30R17 | 21.8" | 21.8 x 8.1 |
| 195/45R15 | 21.9" | 21.9 x 7.7 |
| 215/35R16 | 21.9" | 21.9 x 8.5 |
| 255/30R16 | 22.0" | 22 x 10 |
| 255/35R15 | 22.0" | 22 x 10 |
| 215/30R17 | 22.1" | 22.1 x 8.5 |
| 225/40R15 | 22.1" | 22.1 x 8.9 |
| 195/40R16 | 22.1" | 22.1 x 7.7 |
| 225/35R16 | 22.2" | 22.2 x 8.9 |
| 205/45R15 | 22.3" | 22.3 x 8.1 |
| 225/30R17 | 22.3" | 22.3 x 8.9 |
| 195/35R17 | 22.4" | 22.4 x 7.7 |
| 235/40R15 | 22.4" | 22.4 x 9.3 |
| 205/40R16 | 22.5" | 22.5 x 8.1 |
| 235/35R16 | 22.5" | 22.5 x 9.3 |
| 235/30R17 | 22.6" | 22.6 x 9.3 |
| 195/30R18 | 22.6" | 22.6 x 7.7 |
| 215/45R15 | 22.6" | 22.6 x 8.5 |
| 205/35R17 | 22.6" | 22.6 x 8.1 |
| 195/50R15 | 22.7" | 22.7 x 7.7 |
| 245/40R15 | 22.7" | 22.7 x 9.6 |
| 245/35R16 | 22.8" | 22.8 x 9.6 |
| 215/40R16 | 22.8" | 22.8 x 8.5 |
| 245/30R17 | 22.8" | 22.8 x 9.6 |
| 205/30R18 | 22.8" | 22.8 x 8.1 |
| 195/45R16 | 22.9" | 22.9 x 7.7 |
| 215/35R17 | 22.9" | 22.9 x 8.5 |
| 225/45R15 | 23.0" | 23 x 8.9 |
| 255/30R17 | 23.0" | 23 x 10 |
| 255/35R16 | 23.0" | 23 x 10 |
| 255/40R15 | 23.0" | 23 x 10 |
| 205/50R15 | 23.1" | 23.1 x 8.1 |
| 215/30R18 | 23.1" | 23.1 x 8.5 |
| 225/40R16 | 23.1" | 23.1 x 8.9 |
| 195/40R17 | 23.1" | 23.1 x 7.7 |
| 225/35R17 | 23.2" | 23.2 x 8.9 |
| 205/45R16 | 23.3" | 23.3 x 8.1 |
| 225/30R18 | 23.3" | 23.3 x 8.9 |
| 235/45R15 | 23.3" | 23.3 x 9.3 |
| 195/35R18 | 23.4" | 23.4 x 7.7 |
| 235/40R16 | 23.4" | 23.4 x 9.3 |
| 195/55R15 | 23.4" | 23.4 x 7.7 |
| 205/40R17 | 23.5" | 23.5 x 8.1 |
| 215/50R15 | 23.5" | 23.5 x 8.5 |
| 235/35R17 | 23.5" | 23.5 x 9.3 |
| 235/30R18 | 23.6" | 23.6 x 9.3 |
| 195/30R19 | 23.6" | 23.6 x 7.7 |
| 215/45R16 | 23.6" | 23.6 x 8.5 |
| 205/35R18 | 23.6" | 23.6 x 8.1 |
| 195/50R16 | 23.7" | 23.7 x 7.7 |
| 245/45R15 | 23.7" | 23.7 x 9.6 |
| 245/40R16 | 23.7" | 23.7 x 9.6 |
| 245/35R17 | 23.8" | 23.8 x 9.6 |
| 215/40R17 | 23.8" | 23.8 x 8.5 |
| 245/30R18 | 23.8" | 23.8 x 9.6 |
| 205/30R19 | 23.8" | 23.8 x 8.1 |
| 225/50R15 | 23.9" | 23.9 x 8.9 |
| 205/55R15 | 23.9" | 23.9 x 8.1 |
| 195/45R17 | 23.9" | 23.9 x 7.7 |
| 215/35R18 | 23.9" | 23.9 x 8.5 |
| 225/45R16 | 24.0" | 24 x 8.9 |
| 255/30R18 | 24.0" | 24 x 10 |
| 255/35R17 | 24.0" | 24 x 10 |
| 255/40R16 | 24.0" | 24 x 10 |
| 255/45R15 | 24.0" | 24 x 10 |
| 205/50R16 | 24.1" | 24.1 x 8.1 |
| 215/30R19 | 24.1" | 24.1 x 8.5 |
| 225/40R17 | 24.1" | 24.1 x 8.9 |
| 195/40R18 | 24.1" | 24.1 x 7.7 |
| 225/35R18 | 24.2" | 24.2 x 8.9 |
| 195/60R15 | 24.2" | 24.2 x 7.7 |
| 235/50R15 | 24.3" | 24.3 x 9.3 |
| 205/45R17 | 24.3" | 24.3 x 8.1 |
| 215/55R15 | 24.3" | 24.3 x 8.5 |
| 225/30R19 | 24.3" | 24.3 x 8.9 |
| 235/45R16 | 24.3" | 24.3 x 9.3 |
| 195/35R19 | 24.4" | 24.4 x 7.7 |
| 235/40R17 | 24.4" | 24.4 x 9.3 |
| 195/55R16 | 24.4" | 24.4 x 7.7 |
| 205/40R18 | 24.5" | 24.5 x 8.1 |
| 215/50R16 | 24.5" | 24.5 x 8.5 |
| 235/35R18 | 24.5" | 24.5 x 9.3 |
| 235/30R19 | 24.6" | 24.6 x 9.3 |
| 215/45R17 | 24.6" | 24.6 x 8.5 |
| 245/50R15 | 24.6" | 24.6 x 9.6 |
| 205/35R19 | 24.6" | 24.6 x 8.1 |
| 195/50R17 | 24.7" | 24.7 x 7.7 |
| 245/45R16 | 24.7" | 24.7 x 9.6 |
| 205/60R15 | 24.7" | 24.7 x 8.1 |
| 245/40R17 | 24.7" | 24.7 x 9.6 |
| 225/55R15 | 24.7" | 24.7 x 8.9 |
| 245/35R18 | 24.8" | 24.8 x 9.6 |
| 215/40R18 | 24.8" | 24.8 x 8.5 |
| 245/30R19 | 24.8" | 24.8 x 9.6 |
| 225/50R16 | 24.9" | 24.9 x 8.9 |
| 205/55R16 | 24.9" | 24.9 x 8.1 |
| 195/45R18 | 24.9" | 24.9 x 7.7 |
| 215/35R19 | 24.9" | 24.9 x 8.5 |
| 225/45R17 | 25.0" | 25 x 8.9 |
| 195/65R15 | 25.0" | 25 x 7.7 |
| 255/30R19 | 25.0" | 25 x 10 |
| 255/35R18 | 25.0" | 25 x 10 |
| 255/40R17 | 25.0" | 25 x 10 |
| 255/45R16 | 25.0" | 25 x 10 |
| 255/50R15 | 25.0" | 25 x 10 |
| 205/50R17 | 25.1" | 25.1 x 8.1 |
| 225/40R18 | 25.1" | 25.1 x 8.9 |
| 195/40R19 | 25.1" | 25.1 x 7.7 |
| 215/60R15 | 25.2" | 25.2 x 8.5 |
| 235/55R15 | 25.2" | 25.2 x 9.3 |
| 225/35R19 | 25.2" | 25.2 x 8.9 |
| 195/60R16 | 25.2" | 25.2 x 7.7 |
| 235/50R16 | 25.3" | 25.3 x 9.3 |
| 205/45R18 | 25.3" | 25.3 x 8.1 |
| 215/55R16 | 25.3" | 25.3 x 8.5 |
| 225/30R20 | 25.3" | 25.3 x 8.9 |
| 235/45R17 | 25.3" | 25.3 x 9.3 |
| 235/40R18 | 25.4" | 25.4 x 9.3 |
| 195/55R17 | 25.4" | 25.4 x 7.7 |
| 205/40R19 | 25.5" | 25.5 x 8.1 |
| 215/50R17 | 25.5" | 25.5 x 8.5 |
| 235/35R19 | 25.5" | 25.5 x 9.3 |
| 205/65R15 | 25.5" | 25.5 x 8.1 |
| 235/30R20 | 25.6" | 25.6 x 9.3 |
| 245/55R15 | 25.6" | 25.6 x 9.6 |
| 215/45R18 | 25.6" | 25.6 x 8.5 |
| 225/60R15 | 25.6" | 25.6 x 8.9 |
| 245/50R16 | 25.6" | 25.6 x 9.6 |
| 195/50R18 | 25.7" | 25.7 x 7.7 |
| 245/45R17 | 25.7" | 25.7 x 9.6 |
| 205/60R16 | 25.7" | 25.7 x 8.1 |
| 245/40R18 | 25.7" | 25.7 x 9.6 |
| 225/55R16 | 25.7" | 25.7 x 8.9 |
| 195/70R15 | 25.7" | 25.7 x 7.7 |
| 245/35R19 | 25.8" | 25.8 x 9.6 |
| 215/40R19 | 25.8" | 25.8 x 8.5 |
| 245/30R20 | 25.8" | 25.8 x 9.6 |
| 225/50R17 | 25.9" | 25.9 x 8.9 |
| 205/55R17 | 25.9" | 25.9 x 8.1 |
| 195/45R19 | 25.9" | 25.9 x 7.7 |
| 225/45R18 | 26.0" | 26 x 8.9 |
| 195/65R16 | 26.0" | 26 x 7.7 |
| 215/65R15 | 26.0" | 26 x 8.5 |
| 255/30R20 | 26.0" | 26 x 10 |
| 255/35R19 | 26.0" | 26 x 10 |
| 255/40R18 | 26.0" | 26 x 10 |
| 255/45R17 | 26.0" | 26 x 10 |
| 255/50R16 | 26.0" | 26 x 10 |
| 255/55R15 | 26.0" | 26 x 10 |
| 205/50R18 | 26.1" | 26.1 x 8.1 |
| 225/40R19 | 26.1" | 26.1 x 8.9 |
| 235/60R15 | 26.1" | 26.1 x 9.3 |
| 215/60R16 | 26.2" | 26.2 x 8.5 |
| 235/55R16 | 26.2" | 26.2 x 9.3 |
| 225/35R20 | 26.2" | 26.2 x 8.9 |
| 195/60R17 | 26.2" | 26.2 x 7.7 |
| 235/50R17 | 26.3" | 26.3 x 9.3 |
| 205/45R19 | 26.3" | 26.3 x 8.1 |
| 205/70R15 | 26.3" | 26.3 x 8.1 |
| 215/55R17 | 26.3" | 26.3 x 8.5 |
| 235/45R18 | 26.3" | 26.3 x 9.3 |
| 235/40R19 | 26.4" | 26.4 x 9.3 |
| 195/55R18 | 26.4" | 26.4 x 7.7 |
| 215/50R18 | 26.5" | 26.5 x 8.5 |
| 235/35R20 | 26.5" | 26.5 x 9.3 |
| 205/65R16 | 26.5" | 26.5 x 8.1 |
| 195/75R15 | 26.5" | 26.5 x 7.7 |
| 225/65R15 | 26.5" | 26.5 x 8.9 |
| 245/60R15 | 26.6" | 26.6 x 9.6 |
| 245/55R16 | 26.6" | 26.6 x 9.6 |
| 215/45R19 | 26.6" | 26.6 x 8.5 |
| 225/60R16 | 26.6" | 26.6 x 8.9 |
| 245/50R17 | 26.6" | 26.6 x 9.6 |
| 195/50R19 | 26.7" | 26.7 x 7.7 |
| 245/45R18 | 26.7" | 26.7 x 9.6 |
| 205/60R17 | 26.7" | 26.7 x 8.1 |
| 245/40R19 | 26.7" | 26.7 x 9.6 |
| 225/55R17 | 26.7" | 26.7 x 8.9 |
| 195/70R16 | 26.7" | 26.7 x 7.7 |
| 245/35R20 | 26.8" | 26.8 x 9.6 |
| 215/70R15 | 26.9" | 26.9 x 8.5 |
| 225/50R18 | 26.9" | 26.9 x 8.9 |
| 205/55R18 | 26.9" | 26.9 x 8.1 |
| 225/45R19 | 27.0" | 27 x 8.9 |
| 195/65R17 | 27.0" | 27 x 7.7 |
| 215/65R16 | 27.0" | 27 x 8.5 |
| 235/65R15 | 27.0" | 27 x 9.3 |
| 255/35R20 | 27.0" | 27 x 10 |
| 255/40R19 | 27.0" | 27 x 10 |
| 255/45R18 | 27.0" | 27 x 10 |
| 255/50R17 | 27.0" | 27 x 10 |
| 255/55R16 | 27.0" | 27 x 10 |
| 255/60R15 | 27.0" | 27 x 10 |
| 205/50R19 | 27.1" | 27.1 x 8.1 |
| 225/40R20 | 27.1" | 27.1 x 8.9 |
| 235/60R16 | 27.1" | 27.1 x 9.3 |
| 205/75R15 | 27.1" | 27.1 x 8.1 |
| 215/60R17 | 27.2" | 27.2 x 8.5 |
| 235/55R17 | 27.2" | 27.2 x 9.3 |
| 195/60R18 | 27.2" | 27.2 x 7.7 |
| 235/50R18 | 27.3" | 27.3 x 9.3 |
| 195/80R15 | 27.3" | 27.3 x 7.7 |
| 205/70R16 | 27.3" | 27.3 x 8.1 |
| 215/55R18 | 27.3" | 27.3 x 8.5 |
| 235/45R19 | 27.3" | 27.3 x 9.3 |
| 225/70R15 | 27.4" | 27.4 x 8.9 |
| 235/40R20 | 27.4" | 27.4 x 9.3 |
| 195/55R19 | 27.4" | 27.4 x 7.7 |
| 215/50R19 | 27.5" | 27.5 x 8.5 |
| 205/65R17 | 27.5" | 27.5 x 8.1 |
| 195/75R16 | 27.5" | 27.5 x 7.7 |
| 225/65R16 | 27.5" | 27.5 x 8.9 |
| 245/65R15 | 27.5" | 27.5 x 9.6 |
| 245/60R16 | 27.6" | 27.6 x 9.6 |
| 245/55R17 | 27.6" | 27.6 x 9.6 |
| 225/60R17 | 27.6" | 27.6 x 8.9 |
| 245/50R18 | 27.6" | 27.6 x 9.6 |
| 245/45R19 | 27.7" | 27.7 x 9.6 |
| 205/60R18 | 27.7" | 27.7 x 8.1 |
| 215/75R15 | 27.7" | 27.7 x 8.5 |
| 245/40R20 | 27.7" | 27.7 x 9.6 |
| 225/55R18 | 27.7" | 27.7 x 8.9 |
| 195/70R17 | 27.7" | 27.7 x 7.7 |
| 215/70R16 | 27.9" | 27.9 x 8.5 |
| 225/50R19 | 27.9" | 27.9 x 8.9 |
| 205/55R19 | 27.9" | 27.9 x 8.1 |
| 205/80R15 | 27.9" | 27.9 x 8.1 |
| 235/70R15 | 28.0" | 28 x 9.3 |
| 225/45R20 | 28.0" | 28 x 8.9 |
| 195/65R18 | 28.0" | 28 x 7.7 |
| 215/65R17 | 28.0" | 28 x 8.5 |
| 235/65R16 | 28.0" | 28 x 9.3 |
| 255/40R20 | 28.0" | 28 x 10 |
| 255/45R19 | 28.0" | 28 x 10 |
| 255/50R18 | 28.0" | 28 x 10 |
| 255/55R17 | 28.0" | 28 x 10 |
| 255/60R16 | 28.0" | 28 x 10 |
| 195/85R15 | 28.1" | 28.1 x 7.7 |
| 255/65R15 | 28.1" | 28.1 x 10 |
| 235/60R17 | 28.1" | 28.1 x 9.3 |
| 205/75R16 | 28.1" | 28.1 x 8.1 |
| 215/60R18 | 28.2" | 28.2 x 8.5 |
| 235/55R18 | 28.2" | 28.2 x 9.3 |
| 195/60R19 | 28.2" | 28.2 x 7.7 |
| 235/50R19 | 28.3" | 28.3 x 9.3 |
| 195/80R16 | 28.3" | 28.3 x 7.7 |
| 225/75R15 | 28.3" | 28.3 x 8.9 |
| 205/70R17 | 28.3" | 28.3 x 8.1 |
| 215/55R19 | 28.3" | 28.3 x 8.5 |
| 235/45R20 | 28.3" | 28.3 x 9.3 |
| 225/70R16 | 28.4" | 28.4 x 8.9 |
| 205/65R18 | 28.5" | 28.5 x 8.1 |
| 245/70R15 | 28.5" | 28.5 x 9.6 |
| 195/75R17 | 28.5" | 28.5 x 7.7 |
| 225/65R17 | 28.5" | 28.5 x 8.9 |
| 245/65R16 | 28.5" | 28.5 x 9.6 |
| 215/80R15 | 28.5" | 28.5 x 8.5 |
| 245/60R17 | 28.6" | 28.6 x 9.6 |
| 245/55R18 | 28.6" | 28.6 x 9.6 |
| 225/60R18 | 28.6" | 28.6 x 8.9 |
| 245/50R19 | 28.6" | 28.6 x 9.6 |
| 245/45R20 | 28.7" | 28.7 x 9.6 |
| 205/60R19 | 28.7" | 28.7 x 8.1 |
| 215/75R16 | 28.7" | 28.7 x 8.5 |
| 205/85R15 | 28.7" | 28.7 x 8.1 |
| 225/55R19 | 28.7" | 28.7 x 8.9 |
| 195/70R18 | 28.7" | 28.7 x 7.7 |
| 215/70R17 | 28.9" | 28.9 x 8.5 |
| 225/50R20 | 28.9" | 28.9 x 8.9 |
| 235/75R15 | 28.9" | 28.9 x 9.3 |
| 205/80R16 | 28.9" | 28.9 x 8.1 |
| 235/70R16 | 29.0" | 29 x 9.3 |
| 195/65R19 | 29.0" | 29 x 7.7 |
| 215/65R18 | 29.0" | 29 x 8.5 |
| 235/65R17 | 29.0" | 29 x 9.3 |
| 255/45R20 | 29.0" | 29 x 10 |
| 255/50R19 | 29.0" | 29 x 10 |
| 255/55R18 | 29.0" | 29 x 10 |
| 255/60R17 | 29.0" | 29 x 10 |
| 195/85R16 | 29.1" | 29.1 x 7.7 |
| 255/65R16 | 29.1" | 29.1 x 10 |
| 255/70R15 | 29.1" | 29.1 x 10 |
| 235/60R18 | 29.1" | 29.1 x 9.3 |
| 205/75R17 | 29.1" | 29.1 x 8.1 |
| 215/60R19 | 29.2" | 29.2 x 8.5 |
| 225/80R15 | 29.2" | 29.2 x 8.9 |
| 235/55R19 | 29.2" | 29.2 x 9.3 |
| 235/50R20 | 29.3" | 29.3 x 9.3 |
| 195/80R17 | 29.3" | 29.3 x 7.7 |
| 225/75R16 | 29.3" | 29.3 x 8.9 |
| 205/70R18 | 29.3" | 29.3 x 8.1 |
| 215/85R15 | 29.4" | 29.4 x 8.5 |
| 225/70R17 | 29.4" | 29.4 x 8.9 |
| 245/75R15 | 29.5" | 29.5 x 9.6 |
| 205/65R19 | 29.5" | 29.5 x 8.1 |
| 245/70R16 | 29.5" | 29.5 x 9.6 |
| 195/75R18 | 29.5" | 29.5 x 7.7 |
| 225/65R18 | 29.5" | 29.5 x 8.9 |
| 245/65R17 | 29.5" | 29.5 x 9.6 |
| 215/80R16 | 29.5" | 29.5 x 8.5 |
| 245/60R18 | 29.6" | 29.6 x 9.6 |
| 245/55R19 | 29.6" | 29.6 x 9.6 |
| 225/60R19 | 29.6" | 29.6 x 8.9 |
| 245/50R20 | 29.6" | 29.6 x 9.6 |
| 215/75R17 | 29.7" | 29.7 x 8.5 |
| 205/85R16 | 29.7" | 29.7 x 8.1 |
| 225/55R20 | 29.7" | 29.7 x 8.9 |
| 195/70R19 | 29.7" | 29.7 x 7.7 |
| 235/80R15 | 29.8" | 29.8 x 9.3 |
| 215/70R18 | 29.9" | 29.9 x 8.5 |
| 235/75R16 | 29.9" | 29.9 x 9.3 |
| 205/80R17 | 29.9" | 29.9 x 8.1 |
| 235/70R17 | 30.0" | 30 x 9.3 |
| 215/65R19 | 30.0" | 30 x 8.5 |
| 235/65R18 | 30.0" | 30 x 9.3 |
| 255/50R20 | 30.0" | 30 x 10 |
| 255/55R19 | 30.0" | 30 x 10 |
| 255/60R18 | 30.0" | 30 x 10 |
| 195/85R17 | 30.1" | 30.1 x 7.7 |
| 255/65R17 | 30.1" | 30.1 x 10 |
| 255/70R16 | 30.1" | 30.1 x 10 |
| 225/85R15 | 30.1" | 30.1 x 8.9 |
| 255/75R15 | 30.1" | 30.1 x 10 |
| 235/60R19 | 30.1" | 30.1 x 9.3 |
| 205/75R18 | 30.1" | 30.1 x 8.1 |
| 225/80R16 | 30.2" | 30.2 x 8.9 |
| 235/55R20 | 30.2" | 30.2 x 9.3 |
| 195/80R18 | 30.3" | 30.3 x 7.7 |
| 225/75R17 | 30.3" | 30.3 x 8.9 |
| 205/70R19 | 30.3" | 30.3 x 8.1 |
| 215/85R16 | 30.4" | 30.4 x 8.5 |
| 225/70R18 | 30.4" | 30.4 x 8.9 |
| 245/80R15 | 30.4" | 30.4 x 9.6 |
| 245/75R16 | 30.5" | 30.5 x 9.6 |
| 245/70R17 | 30.5" | 30.5 x 9.6 |
| 195/75R19 | 30.5" | 30.5 x 7.7 |
| 225/65R19 | 30.5" | 30.5 x 8.9 |
| 245/65R18 | 30.5" | 30.5 x 9.6 |
| 215/80R17 | 30.5" | 30.5 x 8.5 |
| 245/60R19 | 30.6" | 30.6 x 9.6 |
| 245/55R20 | 30.6" | 30.6 x 9.6 |
| 225/60R20 | 30.6" | 30.6 x 8.9 |
| 215/75R18 | 30.7" | 30.7 x 8.5 |
| 205/85R17 | 30.7" | 30.7 x 8.1 |
| 235/85R15 | 30.7" | 30.7 x 9.3 |
| 235/80R16 | 30.8" | 30.8 x 9.3 |
| 215/70R19 | 30.9" | 30.9 x 8.5 |
| 235/75R17 | 30.9" | 30.9 x 9.3 |
| 205/80R18 | 30.9" | 30.9 x 8.1 |
| 235/70R18 | 31.0" | 31 x 9.3 |
| 235/65R19 | 31.0" | 31 x 9.3 |
| 255/55R20 | 31.0" | 31 x 10 |
| 255/60R19 | 31.0" | 31 x 10 |
| 195/85R18 | 31.1" | 31.1 x 7.7 |
| 255/65R18 | 31.1" | 31.1 x 10 |
| 255/70R17 | 31.1" | 31.1 x 10 |
| 225/85R16 | 31.1" | 31.1 x 8.9 |
| 255/75R16 | 31.1" | 31.1 x 10 |
| 255/80R15 | 31.1" | 31.1 x 10 |
| 235/60R20 | 31.1" | 31.1 x 9.3 |
| 205/75R19 | 31.1" | 31.1 x 8.1 |
| 225/80R17 | 31.2" | 31.2 x 8.9 |
| 195/80R19 | 31.3" | 31.3 x 7.7 |
| 225/75R18 | 31.3" | 31.3 x 8.9 |
| 215/85R17 | 31.4" | 31.4 x 8.5 |
| 245/85R15 | 31.4" | 31.4 x 9.6 |
| 225/70R19 | 31.4" | 31.4 x 8.9 |
| 245/80R16 | 31.4" | 31.4 x 9.6 |
| 245/75R17 | 31.5" | 31.5 x 9.6 |
| 245/70R18 | 31.5" | 31.5 x 9.6 |
| 225/65R20 | 31.5" | 31.5 x 8.9 |
| 245/65R19 | 31.5" | 31.5 x 9.6 |
| 215/80R18 | 31.5" | 31.5 x 8.5 |
| 245/60R20 | 31.6" | 31.6 x 9.6 |
| 215/75R19 | 31.7" | 31.7 x 8.5 |
| 205/85R18 | 31.7" | 31.7 x 8.1 |
| 235/85R16 | 31.7" | 31.7 x 9.3 |
| 235/80R17 | 31.8" | 31.8 x 9.3 |
| 235/75R18 | 31.9" | 31.9 x 9.3 |
| 205/80R19 | 31.9" | 31.9 x 8.1 |
| 235/70R19 | 32.0" | 32 x 9.3 |
| 235/65R20 | 32.0" | 32 x 9.3 |
| 255/60R20 | 32.0" | 32 x 10 |
| 195/85R19 | 32.1" | 32.1 x 7.7 |
| 255/65R19 | 32.1" | 32.1 x 10 |
| 255/70R18 | 32.1" | 32.1 x 10 |
| 225/85R17 | 32.1" | 32.1 x 8.9 |
| 255/75R17 | 32.1" | 32.1 x 10 |
| 255/80R16 | 32.1" | 32.1 x 10 |
| 255/85R15 | 32.1" | 32.1 x 10 |
| 225/80R18 | 32.2" | 32.2 x 8.9 |
| 225/75R19 | 32.3" | 32.3 x 8.9 |
| 215/85R18 | 32.4" | 32.4 x 8.5 |
| 245/85R16 | 32.4" | 32.4 x 9.6 |
| 225/70R20 | 32.4" | 32.4 x 8.9 |
| 245/80R17 | 32.4" | 32.4 x 9.6 |
| 245/75R18 | 32.5" | 32.5 x 9.6 |
| 245/70R19 | 32.5" | 32.5 x 9.6 |
| 245/65R20 | 32.5" | 32.5 x 9.6 |
| 215/80R19 | 32.5" | 32.5 x 8.5 |
| 205/85R19 | 32.7" | 32.7 x 8.1 |
| 235/85R17 | 32.7" | 32.7 x 9.3 |
| 235/80R18 | 32.8" | 32.8 x 9.3 |
| 235/75R19 | 32.9" | 32.9 x 9.3 |
| 235/70R20 | 33.0" | 33 x 9.3 |
| 255/65R20 | 33.1" | 33.1 x 10 |
| 255/70R19 | 33.1" | 33.1 x 10 |
| 225/85R18 | 33.1" | 33.1 x 8.9 |
| 255/75R18 | 33.1" | 33.1 x 10 |
| 255/80R17 | 33.1" | 33.1 x 10 |
| 255/85R16 | 33.1" | 33.1 x 10 |
| 225/80R19 | 33.2" | 33.2 x 8.9 |
| 225/75R20 | 33.3" | 33.3 x 8.9 |
| 215/85R19 | 33.4" | 33.4 x 8.5 |
| 245/85R17 | 33.4" | 33.4 x 9.6 |
| 245/80R18 | 33.4" | 33.4 x 9.6 |
| 245/75R19 | 33.5" | 33.5 x 9.6 |
| 245/70R20 | 33.5" | 33.5 x 9.6 |
| 235/85R18 | 33.7" | 33.7 x 9.3 |
| 235/80R19 | 33.8" | 33.8 x 9.3 |
| 235/75R20 | 33.9" | 33.9 x 9.3 |
| 255/70R20 | 34.1" | 34.1 x 10 |
| 225/85R19 | 34.1" | 34.1 x 8.9 |
| 255/75R19 | 34.1" | 34.1 x 10 |
| 255/80R18 | 34.1" | 34.1 x 10 |
| 255/85R17 | 34.1" | 34.1 x 10 |
| 225/80R20 | 34.2" | 34.2 x 8.9 |
| 245/85R18 | 34.4" | 34.4 x 9.6 |
| 245/80R19 | 34.4" | 34.4 x 9.6 |
| 245/75R20 | 34.5" | 34.5 x 9.6 |
| 235/85R19 | 34.7" | 34.7 x 9.3 |
| 235/80R20 | 34.8" | 34.8 x 9.3 |
| 225/85R20 | 35.1" | 35.1 x 8.9 |
| 255/75R20 | 35.1" | 35.1 x 10 |
| 255/80R19 | 35.1" | 35.1 x 10 |
| 255/85R18 | 35.1" | 35.1 x 10 |
| 245/85R19 | 35.4" | 35.4 x 9.6 |
| 245/80R20 | 35.4" | 35.4 x 9.6 |
| 235/85R20 | 35.7" | 35.7 x 9.3 |
| 255/80R20 | 36.1" | 36.1 x 10 |
| 255/85R19 | 36.1" | 36.1 x 10 |
| 245/85R20 | 36.4" | 36.4 x 9.6 |
| 255/85R20 | 37.1" | 37.1 x 10 |
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Tires
468
Range
Rims: 15-18" • A4
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Quality
300 DPI
Calculated dimensions and comparisons for the most searched tire sizes.
A common swap on European sedans and sport compacts. The 225/50R17 is about 1 inch taller — enough to affect speedometer accuracy and fender clearance.
| Spec | 225/45R17 | 225/50R17 | Difference |
|---|---|---|---|
| Overall Diameter | 24.9 in / 632 mm | 25.9 in / 658 mm | +1.0 in / +26 mm |
| Sidewall Height | 4.0 in / 101 mm | 4.4 in / 113 mm | +0.4 in / +11 mm |
| Section Width | 8.9 in / 225 mm | 8.9 in / 225 mm | Same |
| Circumference | 78.2 in / 1,986 mm | 81.3 in / 2,065 mm | +3.1 in / +79 mm |
| Revs per Mile | 810 | 779 | −31 |
The 225/50R17 gives a slightly softer ride due to the taller sidewall. If your car came with 225/45R17, fitting 225/50R17 will cause your speedometer to read ~4% low.
A popular OEM size on mid-size SUVs (Toyota RAV4, Honda CR-V, Ford Edge). Here are the full dimensions converted to inches.
A "33-inch tire" is a common off-road target size. Here are the closest metric equivalents by rim diameter.
| Metric Size | Actual Diameter | Rim | Notes |
|---|---|---|---|
| 285/70R17 | 32.7 in | 17" | Closest to 33s on 17" rim |
| 285/75R16 | 32.8 in | 16" | Popular on older trucks |
| 305/65R17 | 32.6 in | 17" | Wider footprint |
| 275/70R18 | 33.2 in | 18" | Modern truck reference |
| 33x12.50R15 | 33.0 in | 15" | Flotation size, nominal 33" |
35-inch tires are a common upgrade target for many off-road builds. Lift, trimming, offset, gearing, and clearance needs vary by vehicle, trim, wheel, and tire model. Common metric equivalents:
| Metric Size | Diameter | Width | Rim |
|---|---|---|---|
| 315/70R17 | 34.4 in | 12.4 in | 17" |
| 315/75R16 | 34.6 in | 12.4 in | 16" |
| 35x12.50R17 | 35.0 in | 12.5 in | 17" |
| 35x12.50R18 | 35.0 in | 12.5 in | 18" |
| 325/65R18 | 34.6 in | 12.8 in | 18" |
| 305/70R18 | 34.8 in | 12.0 in | 18" |
True 35x12.50 flotation sizes are the most common choice. Metric equivalents vary slightly in actual diameter.
A classic truck and off-road size, common on older Ford F-150s, Chevy Silverados, and Jeep XJs. Often called a "32-inch tire."
A 285/75R16 is commonly paired with 16" rims in the 7–8.5" width range, but actual clearance depends on tire model, wheel width, offset, suspension, load, and vehicle trim.
A popular OEM and mild off-road size on trucks and SUVs (Toyota Tundra, Chevy Colorado, GMC Canyon). Often used as a base before upgrading to 33s.
Upgrading from 265/70R17 to 285/70R17 adds about 0.8" in diameter. Treat this as a calculated comparison and confirm clearance on the specific vehicle before installing.
Three simple steps to read, compare, and choose the right tire dimensions for your vehicle.
Find the code on your tire sidewall, e.g. '265/70R17'. The first number is width in mm, the middle is aspect ratio (%), and the last is rim diameter in inches.
Use the Diameter column to compare overall height between two tire sizes side by side. A 265/70R17 is approx 31.6" — a key number for lift kit and speedometer checks.
Cross-reference the Width column, then check wheel width, offset, suspension travel, and fender-liner clearance on the actual vehicle before installation.
Moving from a stock 30-inch tire to a 33-inch or 35-inch tire can increase calculated ground clearance, but clearance and modification needs must be checked on the actual vehicle.
Plus-sizing wheels (e.g., 18" to 19") requires a lower profile tire to maintain the same overall diameter.
Load range and sidewall stiffness matter. A 'metric' size might have different load ratings than an LT (Light Truck) size.
Standard for most modern vehicles. Format: [Width mm] / [Aspect Ratio %] R [Rim Diameter]. Requires calculation to find height.
Common for older trucks and off-road tires. Format: [Height in] x [Width in] R [Rim Diameter]. Dimensions are explicit, no math needed.
Need pressure units too? Use PSI to Bar. Checking millimeter section width in inches? Use MM to Inches or Inches to MM. For general metric-to-imperial length checks, use CM to Inches.
| PSI | Bar | kPa |
|---|---|---|
| 10 | 0.69 | 69 |
| 20 | 1.38 | 138 |
| 30 | 2.07 | 207 |
| 32 | 2.21 | 221 |
| 35 | 2.41 | 241 |
| 40 | 2.76 | 276 |
| 50 | 3.45 | 345 |
| 60 | 4.14 | 414 |
| 80 | 5.52 | 552 |
| 100 | 6.89 | 689 |
Professional PSI to Bar conversion table for tires, hydraulics, and diving. Includes kPa and atm.
View chart| Millimeters | Decimal (in) | Fraction (in) |
|---|---|---|
| 0.5 | 0.020 | 0 |
| 1 | 0.039 | 1/16 |
| 6.35 | 0.250 | 1/4 |
| 12.7 | 0.500 | 1/2 |
| 19 | 0.748 | 3/4 |
| 25.4 | 1.000 | 1 |
| 38.1 | 1.500 | 1 1/2 |
| 50.8 | 2.000 | 2 |
| 76.2 | 3.000 | 3 |
| 101.6 | 4.000 | 4 |
Convert millimeters to inches with decimals and fractions for woodworking and engineering.
View chart| Inches (fraction) | Inches (decimal) | Millimeters | Centimeters |
|---|---|---|---|
| 1/4" | 0.250 | 6.35 | 0.64 |
| 1/2" | 0.500 | 12.70 | 1.27 |
| 1" | 1.000 | 25.40 | 2.54 |
| 1 1/2" | 1.500 | 38.10 | 3.81 |
| 2" | 2.000 | 50.80 | 5.08 |
| 2 1/2" | 2.500 | 63.50 | 6.35 |
| 3" | 3.000 | 76.20 | 7.62 |
| 4" | 4.000 | 101.60 | 10.16 |
| 5" | 5.000 | 127.00 | 12.70 |
| 6" | 6.000 | 152.40 | 15.24 |
Imperial to metric conversions for hardware sizing and fabrication.
View chart| Centimeters | Meters | Decimal (in) | Fraction (in) | ft'-in |
|---|---|---|---|---|
| 5 | 0.05 | 1.97 | 1 15/16" | 0'2" |
| 10 | 0.10 | 3.94 | 3 15/16" | 0'4" |
| 20 | 0.20 | 7.87 | 7 7/8" | 0'8" |
| 30 | 0.30 | 11.81 | 11 13/16" | 1'0" |
| 50 | 0.50 | 19.69 | 19 11/16" | 1'8" |
| 70 | 0.70 | 27.56 | 27 9/16" | 2'4" |
| 90 | 0.90 | 35.43 | 35 7/16" | 2'11" |
| 100 | 1.00 | 39.37 | 39 3/8" | 3'3" |
| 130 | 1.30 | 51.18 | 51 3/16" | 4'3" |
| 180 | 1.80 | 70.87 | 70 7/8" | 5'11" |
Convert centimeters to inches with precision for international sizing and measurements.
View chartExplore more: All Charts · Categories · Use Cases
225 is the section width in millimeters, 80 is the aspect ratio, R means radial construction, and 16 is the wheel diameter in inches. A 225/80R16 calculates to about 30.2 inches overall diameter.
Yes. “Tyre” is the British spelling and “tire” is the US spelling. The size code format, such as 225/80R16 or 285/75R16, is read the same way.
No. The chart gives calculated dimensions only. Actual mounted size and clearance vary by manufacturer, tread design, load, inflation, wheel width, offset, suspension, and vehicle trim. Check the vehicle and tire manufacturer guidance and measure real clearance before installation.
A 285/75R16 tire calculates to about 32.8 inches tall and about 11.2 inches wide on a 16-inch rim. Actual mounted size can vary by tire model and wheel width.
Tire diameter is the calculated total height of the tire from the ground side to the top side when derived from its size code. It matters for clearance, gearing, and speedometer estimates, but actual mounted size can vary.
Yes. A taller tire usually makes the speedometer read lower than your actual speed, while a shorter tire can make it read higher. Check the diameter difference and verify with appropriate vehicle guidance before changing sizes.
Check overall diameter, section width, approved rim width, load index, speed rating, wheel offset, suspension clearance, fender clearance, and manufacturer guidance. Treat chart values as calculation references, not installation approval.
Yes. Use the Download or Print button above the chart to save a PDF or PNG version. The printable format is designed for garage walls, workshops, or shop counters.