Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-15 | 145/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.44 (570) | 22.42 (569.5) | -0.02 (-0.5) -0.1% |
| Width inches (mm) | 5.31 (135) | 5.71 (145) | 0.39 (10) 7.4% |
| Circum. inches (mm) | 70.5 (1790.71) | 70.44 (1789.14) | -0.06 (-1.57) -0.1% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.71 (94.25) | -0.01 (-0.25) -0.3% |
| Revolutions per mile (km) | 898.72 (558.44) | 899.51 (558.93) | 0.79 (0.49) 0.1% |
145/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.98 mph (32.16 km/h) |
| 25 mph (40.23 km/h) | 24.98 mph (40.2 km/h) |
| 30 mph (48.28 km/h) | 29.97 mph (48.24 km/h) |
| 35 mph (56.33 km/h) | 34.97 mph (56.28 km/h) |
| 40 mph (64.37 km/h) | 39.96 mph (64.32 km/h) |
| 45 mph (72.42 km/h) | 44.96 mph (72.36 km/h) |
| 50 mph (80.47 km/h) | 49.96 mph (80.4 km/h) |
| 55 mph (88.51 km/h) | 54.95 mph (88.44 km/h) |
| 60 mph (96.56 km/h) | 59.95 mph (96.48 km/h) |
| 65 mph (104.61 km/h) | 64.94 mph (104.52 km/h) |
| 70 mph (112.65 km/h) | 69.94 mph (112.56 km/h) |
| 75 mph (120.7 km/h) | 74.93 mph (120.6 km/h) |
| 80 mph (128.75 km/h) | 79.93 mph (128.63 km/h) |
| 85 mph (136.79 km/h) | 84.93 mph (136.67 km/h) |
| 90 mph (144.84 km/h) | 89.92 mph (144.71 km/h) |
| 95 mph (152.89 km/h) | 94.92 mph (152.75 km/h) |
| 100 mph (160.93 km/h) | 99.91 mph (160.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2289 | 2659 | 2864 | 2990 | 3127 | 3224 | 3331 | 3458 | 3633 | 3809 | 4003 | 4159 | 4442 | 4753 | 4997 | 5153 | 5241 | 5562 | 6010 | 6984 |
Better Fuel Economy Factory Ratios Increased Power
