Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/40-20 | 255/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.4 (696) | 27.03 (686.5) | -0.37 (-9.5) -1.4% |
| Width inches (mm) | 9.25 (235) | 10.04 (255) | 0.79 (20) 8.5% |
| Circum. inches (mm) | 86.08 (2186.55) | 84.91 (2156.7) | -1.18 (-29.85) -1.4% |
| Sidewall Height inches (mm) | 3.7 (94) | 3.51 (89.25) | -0.19 (-4.75) -5.1% |
| Revolutions per mile (km) | 736.02 (457.34) | 746.21 (463.67) | 10.19 (6.33) 1.4% |
255/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.73 mph (31.75 km/h) |
| 25 mph (40.23 km/h) | 24.66 mph (39.68 km/h) |
| 30 mph (48.28 km/h) | 29.59 mph (47.62 km/h) |
| 35 mph (56.33 km/h) | 34.52 mph (55.56 km/h) |
| 40 mph (64.37 km/h) | 39.45 mph (63.5 km/h) |
| 45 mph (72.42 km/h) | 44.39 mph (71.43 km/h) |
| 50 mph (80.47 km/h) | 49.32 mph (79.37 km/h) |
| 55 mph (88.51 km/h) | 54.25 mph (87.31 km/h) |
| 60 mph (96.56 km/h) | 59.18 mph (95.24 km/h) |
| 65 mph (104.61 km/h) | 64.11 mph (103.18 km/h) |
| 70 mph (112.65 km/h) | 69.04 mph (111.12 km/h) |
| 75 mph (120.7 km/h) | 73.98 mph (119.05 km/h) |
| 80 mph (128.75 km/h) | 78.91 mph (126.99 km/h) |
| 85 mph (136.79 km/h) | 83.84 mph (134.93 km/h) |
| 90 mph (144.84 km/h) | 88.77 mph (142.86 km/h) |
| 95 mph (152.89 km/h) | 93.7 mph (150.8 km/h) |
| 100 mph (160.93 km/h) | 98.64 mph (158.74 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 |
Better Fuel Economy Factory Ratios Increased Power
