Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/50-15 | 145/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.5 (546) | 22.42 (569.5) | 0.93 (23.5) 4.3% |
| Width inches (mm) | 6.5 (165) | 5.71 (145) | -0.79 (-20) -12.1% |
| Circum. inches (mm) | 67.53 (1715.31) | 70.44 (1789.14) | 2.91 (73.83) 4.3% |
| Sidewall Height inches (mm) | 3.25 (82.5) | 3.71 (94.25) | 0.46 (11.75) 14.2% |
| Revolutions per mile (km) | 938.22 (582.98) | 899.51 (558.93) | -38.72 (-24.06) -4.1% |
145/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.86 mph (33.57 km/h) |
| 25 mph (40.23 km/h) | 26.08 mph (41.97 km/h) |
| 30 mph (48.28 km/h) | 31.29 mph (50.36 km/h) |
| 35 mph (56.33 km/h) | 36.51 mph (58.75 km/h) |
| 40 mph (64.37 km/h) | 41.72 mph (67.14 km/h) |
| 45 mph (72.42 km/h) | 46.94 mph (75.54 km/h) |
| 50 mph (80.47 km/h) | 52.15 mph (83.93 km/h) |
| 55 mph (88.51 km/h) | 57.37 mph (92.32 km/h) |
| 60 mph (96.56 km/h) | 62.58 mph (100.72 km/h) |
| 65 mph (104.61 km/h) | 67.8 mph (109.11 km/h) |
| 70 mph (112.65 km/h) | 73.01 mph (117.5 km/h) |
| 75 mph (120.7 km/h) | 78.23 mph (125.9 km/h) |
| 80 mph (128.75 km/h) | 83.44 mph (134.29 km/h) |
| 85 mph (136.79 km/h) | 88.66 mph (142.68 km/h) |
| 90 mph (144.84 km/h) | 93.87 mph (151.08 km/h) |
| 95 mph (152.89 km/h) | 99.09 mph (159.47 km/h) |
| 100 mph (160.93 km/h) | 104.3 mph (167.86 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
