Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-15 | 265/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.77 (553) | 23.35 (593) | 1.57 (40) 7.2% |
| Width inches (mm) | 8.46 (215) | 10.43 (265) | 1.97 (50) 23.3% |
| Circum. inches (mm) | 68.4 (1737.3) | 73.35 (1862.96) | 4.95 (125.66) 7.2% |
| Sidewall Height inches (mm) | 3.39 (86) | 4.17 (106) | 0.79 (20) 23.3% |
| Revolutions per mile (km) | 926.35 (575.6) | 863.86 (536.78) | -62.49 (-38.83) -6.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.45 mph (34.52 km/h) |
| 25 mph (40.23 km/h) | 26.81 mph (43.14 km/h) |
| 30 mph (48.28 km/h) | 32.17 mph (51.77 km/h) |
| 35 mph (56.33 km/h) | 37.53 mph (60.4 km/h) |
| 40 mph (64.37 km/h) | 42.89 mph (69.03 km/h) |
| 45 mph (72.42 km/h) | 48.25 mph (77.66 km/h) |
| 50 mph (80.47 km/h) | 53.62 mph (86.29 km/h) |
| 55 mph (88.51 km/h) | 58.98 mph (94.92 km/h) |
| 60 mph (96.56 km/h) | 64.34 mph (103.55 km/h) |
| 65 mph (104.61 km/h) | 69.7 mph (112.17 km/h) |
| 70 mph (112.65 km/h) | 75.06 mph (120.8 km/h) |
| 75 mph (120.7 km/h) | 80.42 mph (129.43 km/h) |
| 80 mph (128.75 km/h) | 85.79 mph (138.06 km/h) |
| 85 mph (136.79 km/h) | 91.15 mph (146.69 km/h) |
| 90 mph (144.84 km/h) | 96.51 mph (155.32 km/h) |
| 95 mph (152.89 km/h) | 101.87 mph (163.95 km/h) |
| 100 mph (160.93 km/h) | 107.23 mph (172.58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2198 | 2554 | 2750 | 2872 | 3003 | 3096 | 3199 | 3321 | 3489 | 3658 | 3845 | 3994 | 4266 | 4565 | 4799 | 4949 | 5033 | 5342 | 5772 | 6707 |
Better Fuel Economy Factory Ratios Increased Power
