Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/45-15 | 245/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.04 (610.5) | 27.54 (699.5) | 3.5 (89) 14.6% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 75.51 (1917.94) | 86.52 (2197.54) | 11.01 (279.6) 14.6% |
| Sidewall Height inches (mm) | 4.52 (114.75) | 6.27 (159.25) | 1.75 (44.5) 38.8% |
| Revolutions per mile (km) | 839.1 (521.39) | 732.34 (455.05) | -106.76 (-66.34) -12.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.92 mph (36.88 km/h) |
| 25 mph (40.23 km/h) | 28.64 mph (46.1 km/h) |
| 30 mph (48.28 km/h) | 34.37 mph (55.32 km/h) |
| 35 mph (56.33 km/h) | 40.1 mph (64.54 km/h) |
| 40 mph (64.37 km/h) | 45.83 mph (73.76 km/h) |
| 45 mph (72.42 km/h) | 51.56 mph (82.98 km/h) |
| 50 mph (80.47 km/h) | 57.29 mph (92.2 km/h) |
| 55 mph (88.51 km/h) | 63.02 mph (101.42 km/h) |
| 60 mph (96.56 km/h) | 68.75 mph (110.64 km/h) |
| 65 mph (104.61 km/h) | 74.48 mph (119.86 km/h) |
| 70 mph (112.65 km/h) | 80.2 mph (129.08 km/h) |
| 75 mph (120.7 km/h) | 85.93 mph (138.3 km/h) |
| 80 mph (128.75 km/h) | 91.66 mph (147.52 km/h) |
| 85 mph (136.79 km/h) | 97.39 mph (156.74 km/h) |
| 90 mph (144.84 km/h) | 103.12 mph (165.96 km/h) |
| 95 mph (152.89 km/h) | 108.85 mph (175.18 km/h) |
| 100 mph (160.93 km/h) | 114.58 mph (184.4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1864 | 2165 | 2332 | 2435 | 2546 | 2625 | 2712 | 2815 | 2958 | 3101 | 3259 | 3386 | 3616 | 3870 | 4068 | 4195 | 4267 | 4528 | 4893 | 5686 |
Better Fuel Economy Factory Ratios Increased Power
