Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-15 | 235/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.77 (553) | 23.33 (592.5) | 1.56 (39.5) 7.1% |
| Width inches (mm) | 8.46 (215) | 9.25 (235) | 0.79 (20) 9.3% |
| Circum. inches (mm) | 68.4 (1737.3) | 73.28 (1861.39) | 4.89 (124.09) 7.1% |
| Sidewall Height inches (mm) | 3.39 (86) | 4.16 (105.75) | 0.78 (19.75) 23% |
| Revolutions per mile (km) | 926.35 (575.6) | 864.59 (537.23) | -61.76 (-38.37) -6.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.43 mph (34.49 km/h) |
| 25 mph (40.23 km/h) | 26.79 mph (43.11 km/h) |
| 30 mph (48.28 km/h) | 32.14 mph (51.73 km/h) |
| 35 mph (56.33 km/h) | 37.5 mph (60.35 km/h) |
| 40 mph (64.37 km/h) | 42.86 mph (68.97 km/h) |
| 45 mph (72.42 km/h) | 48.21 mph (77.59 km/h) |
| 50 mph (80.47 km/h) | 53.57 mph (86.22 km/h) |
| 55 mph (88.51 km/h) | 58.93 mph (94.84 km/h) |
| 60 mph (96.56 km/h) | 64.29 mph (103.46 km/h) |
| 65 mph (104.61 km/h) | 69.64 mph (112.08 km/h) |
| 70 mph (112.65 km/h) | 75 mph (120.7 km/h) |
| 75 mph (120.7 km/h) | 80.36 mph (129.32 km/h) |
| 80 mph (128.75 km/h) | 85.71 mph (137.94 km/h) |
| 85 mph (136.79 km/h) | 91.07 mph (146.57 km/h) |
| 90 mph (144.84 km/h) | 96.43 mph (155.19 km/h) |
| 95 mph (152.89 km/h) | 101.79 mph (163.81 km/h) |
| 100 mph (160.93 km/h) | 107.14 mph (172.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2200 | 2556 | 2753 | 2874 | 3005 | 3099 | 3202 | 3324 | 3492 | 3661 | 3848 | 3998 | 4269 | 4569 | 4803 | 4953 | 5037 | 5346 | 5777 | 6713 |
Better Fuel Economy Factory Ratios Increased Power
