Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/70-15 | 245/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.06 (738) | 27.54 (699.5) | -1.52 (-38.5) -5.2% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 91.28 (2318.5) | 86.52 (2197.54) | -4.76 (-120.95) -5.2% |
| Sidewall Height inches (mm) | 7.03 (178.5) | 6.27 (159.25) | -0.76 (-19.25) -10.8% |
| Revolutions per mile (km) | 694.13 (431.31) | 732.34 (455.05) | 38.2 (23.74) 5.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.96 mph (30.51 km/h) |
| 25 mph (40.23 km/h) | 23.7 mph (38.13 km/h) |
| 30 mph (48.28 km/h) | 28.43 mph (45.76 km/h) |
| 35 mph (56.33 km/h) | 33.17 mph (53.39 km/h) |
| 40 mph (64.37 km/h) | 37.91 mph (61.02 km/h) |
| 45 mph (72.42 km/h) | 42.65 mph (68.64 km/h) |
| 50 mph (80.47 km/h) | 47.39 mph (76.27 km/h) |
| 55 mph (88.51 km/h) | 52.13 mph (83.9 km/h) |
| 60 mph (96.56 km/h) | 56.87 mph (91.52 km/h) |
| 65 mph (104.61 km/h) | 61.61 mph (99.15 km/h) |
| 70 mph (112.65 km/h) | 66.35 mph (106.78 km/h) |
| 75 mph (120.7 km/h) | 71.09 mph (114.4 km/h) |
| 80 mph (128.75 km/h) | 75.83 mph (122.03 km/h) |
| 85 mph (136.79 km/h) | 80.57 mph (129.66 km/h) |
| 90 mph (144.84 km/h) | 85.3 mph (137.29 km/h) |
| 95 mph (152.89 km/h) | 90.04 mph (144.91 km/h) |
| 100 mph (160.93 km/h) | 94.78 mph (152.54 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
