Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/45-18 | 255/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 27.03 (686.5) | 0.52 (13.3) 2% |
| Width inches (mm) | 9.45 (240) | 10.04 (255) | 0.59 (15) 6.2% |
| Circum. inches (mm) | 83.26 (2114.92) | 84.91 (2156.7) | 1.65 (41.78) 2% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.51 (89.25) | -0.74 (-18.75) -17.4% |
| Revolutions per mile (km) | 760.95 (472.83) | 746.21 (463.67) | -14.74 (-9.16) -1.9% |
255/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.4 mph (32.82 km/h) |
| 25 mph (40.23 km/h) | 25.49 mph (41.03 km/h) |
| 30 mph (48.28 km/h) | 30.59 mph (49.23 km/h) |
| 35 mph (56.33 km/h) | 35.69 mph (57.44 km/h) |
| 40 mph (64.37 km/h) | 40.79 mph (65.65 km/h) |
| 45 mph (72.42 km/h) | 45.89 mph (73.85 km/h) |
| 50 mph (80.47 km/h) | 50.99 mph (82.06 km/h) |
| 55 mph (88.51 km/h) | 56.09 mph (90.26 km/h) |
| 60 mph (96.56 km/h) | 61.19 mph (98.47 km/h) |
| 65 mph (104.61 km/h) | 66.28 mph (106.67 km/h) |
| 70 mph (112.65 km/h) | 71.38 mph (114.88 km/h) |
| 75 mph (120.7 km/h) | 76.48 mph (123.09 km/h) |
| 80 mph (128.75 km/h) | 81.58 mph (131.29 km/h) |
| 85 mph (136.79 km/h) | 86.68 mph (139.5 km/h) |
| 90 mph (144.84 km/h) | 91.78 mph (147.7 km/h) |
| 95 mph (152.89 km/h) | 96.88 mph (155.91 km/h) |
| 100 mph (160.93 km/h) | 101.98 mph (164.11 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1899 | 2206 | 2376 | 2481 | 2594 | 2675 | 2764 | 2869 | 3014 | 3160 | 3321 | 3450 | 3685 | 3943 | 4145 | 4275 | 4347 | 4614 | 4986 | 5794 |
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