Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/40-17 | 265/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.03 (635.8) | 26.39 (670.3) | 1.36 (34.5) 5.4% |
| Width inches (mm) | 10.04 (255) | 10.43 (265) | 0.39 (10) 3.9% |
| Circum. inches (mm) | 78.64 (1997.42) | 82.91 (2105.81) | 4.27 (108.38) 5.4% |
| Sidewall Height inches (mm) | 4.02 (102) | 4.69 (119.25) | 0.68 (17.25) 16.9% |
| Revolutions per mile (km) | 805.71 (500.64) | 764.24 (474.88) | -41.47 (-25.77) -5.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.09 mph (33.93 km/h) |
| 25 mph (40.23 km/h) | 26.36 mph (42.42 km/h) |
| 30 mph (48.28 km/h) | 31.63 mph (50.9 km/h) |
| 35 mph (56.33 km/h) | 36.9 mph (59.38 km/h) |
| 40 mph (64.37 km/h) | 42.17 mph (67.87 km/h) |
| 45 mph (72.42 km/h) | 47.44 mph (76.35 km/h) |
| 50 mph (80.47 km/h) | 52.71 mph (84.83 km/h) |
| 55 mph (88.51 km/h) | 57.98 mph (93.32 km/h) |
| 60 mph (96.56 km/h) | 63.26 mph (101.8 km/h) |
| 65 mph (104.61 km/h) | 68.53 mph (110.28 km/h) |
| 70 mph (112.65 km/h) | 73.8 mph (118.77 km/h) |
| 75 mph (120.7 km/h) | 79.07 mph (127.25 km/h) |
| 80 mph (128.75 km/h) | 84.34 mph (135.73 km/h) |
| 85 mph (136.79 km/h) | 89.61 mph (144.22 km/h) |
| 90 mph (144.84 km/h) | 94.88 mph (152.7 km/h) |
| 95 mph (152.89 km/h) | 100.15 mph (161.18 km/h) |
| 100 mph (160.93 km/h) | 105.43 mph (169.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1945 | 2259 | 2433 | 2541 | 2657 | 2739 | 2830 | 2938 | 3087 | 3236 | 3401 | 3534 | 3774 | 4039 | 4246 | 4378 | 4452 | 4726 | 5106 | 5934 |
Better Fuel Economy Factory Ratios Increased Power
