Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-14 | 155/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.13 (587.6) | 25.98 (660) | 2.85 (72.4) 12.3% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 72.68 (1846) | 81.63 (2073.45) | 8.95 (227.45) 12.3% |
| Sidewall Height inches (mm) | 4.57 (116) | 5.49 (139.5) | 0.93 (23.5) 20.3% |
| Revolutions per mile (km) | 871.8 (541.71) | 776.17 (482.29) | -95.63 (-59.42) -11% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.46 mph (36.15 km/h) |
| 25 mph (40.23 km/h) | 28.08 mph (45.19 km/h) |
| 30 mph (48.28 km/h) | 33.7 mph (54.23 km/h) |
| 35 mph (56.33 km/h) | 39.31 mph (63.27 km/h) |
| 40 mph (64.37 km/h) | 44.93 mph (72.31 km/h) |
| 45 mph (72.42 km/h) | 50.54 mph (81.34 km/h) |
| 50 mph (80.47 km/h) | 56.16 mph (90.38 km/h) |
| 55 mph (88.51 km/h) | 61.78 mph (99.42 km/h) |
| 60 mph (96.56 km/h) | 67.39 mph (108.46 km/h) |
| 65 mph (104.61 km/h) | 73.01 mph (117.5 km/h) |
| 70 mph (112.65 km/h) | 78.62 mph (126.53 km/h) |
| 75 mph (120.7 km/h) | 84.24 mph (135.57 km/h) |
| 80 mph (128.75 km/h) | 89.86 mph (144.61 km/h) |
| 85 mph (136.79 km/h) | 95.47 mph (153.65 km/h) |
| 90 mph (144.84 km/h) | 101.09 mph (162.69 km/h) |
| 95 mph (152.89 km/h) | 106.71 mph (171.73 km/h) |
| 100 mph (160.93 km/h) | 112.32 mph (180.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1975 | 2295 | 2471 | 2580 | 2698 | 2782 | 2875 | 2984 | 3135 | 3286 | 3454 | 3589 | 3833 | 4102 | 4312 | 4446 | 4522 | 4799 | 5186 | 6026 |
Better Fuel Economy Factory Ratios Increased Power
