Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/75-15 | 28/8-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.97 (583.5) | 27.95 (709.86) | 4.97 (126.36) 21.7% |
| Width inches (mm) | 5.31 (135) | 7.99 (203) | 2.68 (68) 50.4% |
| Circum. inches (mm) | 72.17 (1833.12) | 87.8 (2230.09) | 15.63 (396.97) 21.7% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 6.47 (164.43) | 2.49 (63.18) 62.4% |
| Revolutions per mile (km) | 877.93 (545.52) | 721.65 (448.41) | -156.28 (-97.11) -17.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.33 mph (39.16 km/h) |
| 25 mph (40.23 km/h) | 30.41 mph (48.95 km/h) |
| 30 mph (48.28 km/h) | 36.5 mph (58.74 km/h) |
| 35 mph (56.33 km/h) | 42.58 mph (68.53 km/h) |
| 40 mph (64.37 km/h) | 48.66 mph (78.31 km/h) |
| 45 mph (72.42 km/h) | 54.74 mph (88.1 km/h) |
| 50 mph (80.47 km/h) | 60.83 mph (97.89 km/h) |
| 55 mph (88.51 km/h) | 66.91 mph (107.68 km/h) |
| 60 mph (96.56 km/h) | 72.99 mph (117.47 km/h) |
| 65 mph (104.61 km/h) | 79.08 mph (127.26 km/h) |
| 70 mph (112.65 km/h) | 85.16 mph (137.05 km/h) |
| 75 mph (120.7 km/h) | 91.24 mph (146.84 km/h) |
| 80 mph (128.75 km/h) | 97.32 mph (156.63 km/h) |
| 85 mph (136.79 km/h) | 103.41 mph (166.42 km/h) |
| 90 mph (144.84 km/h) | 109.49 mph (176.21 km/h) |
| 95 mph (152.89 km/h) | 115.57 mph (186 km/h) |
| 100 mph (160.93 km/h) | 121.66 mph (195.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1836 | 2133 | 2298 | 2399 | 2509 | 2587 | 2673 | 2774 | 2915 | 3056 | 3212 | 3337 | 3564 | 3814 | 4009 | 4134 | 4204 | 4462 | 4822 | 5603 |
Better Fuel Economy Factory Ratios Increased Power
