Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/45-20 | 255/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.33 (719.5) | 27.03 (686.5) | -1.3 (-33) -4.6% |
| Width inches (mm) | 9.25 (235) | 10.04 (255) | 0.79 (20) 8.5% |
| Circum. inches (mm) | 88.99 (2260.38) | 84.91 (2156.7) | -4.08 (-103.67) -4.6% |
| Sidewall Height inches (mm) | 4.16 (105.75) | 3.51 (89.25) | -0.65 (-16.5) -15.6% |
| Revolutions per mile (km) | 711.98 (442.4) | 746.21 (463.67) | 34.22 (21.27) 4.8% |
255/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.08 mph (30.71 km/h) |
| 25 mph (40.23 km/h) | 23.85 mph (38.39 km/h) |
| 30 mph (48.28 km/h) | 28.62 mph (46.07 km/h) |
| 35 mph (56.33 km/h) | 33.39 mph (53.74 km/h) |
| 40 mph (64.37 km/h) | 38.17 mph (61.42 km/h) |
| 45 mph (72.42 km/h) | 42.94 mph (69.1 km/h) |
| 50 mph (80.47 km/h) | 47.71 mph (76.78 km/h) |
| 55 mph (88.51 km/h) | 52.48 mph (84.45 km/h) |
| 60 mph (96.56 km/h) | 57.25 mph (92.13 km/h) |
| 65 mph (104.61 km/h) | 62.02 mph (99.81 km/h) |
| 70 mph (112.65 km/h) | 66.79 mph (107.49 km/h) |
| 75 mph (120.7 km/h) | 71.56 mph (115.17 km/h) |
| 80 mph (128.75 km/h) | 76.33 mph (122.84 km/h) |
| 85 mph (136.79 km/h) | 81.1 mph (130.52 km/h) |
| 90 mph (144.84 km/h) | 85.87 mph (138.2 km/h) |
| 95 mph (152.89 km/h) | 90.64 mph (145.88 km/h) |
| 100 mph (160.93 km/h) | 95.41 mph (153.55 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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