Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-17 | 145/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.99 (634.8) | 27.28 (692.8) | 2.28 (58) 9.1% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 78.52 (1994.28) | 85.69 (2176.5) | 7.17 (182.21) 9.1% |
| Sidewall Height inches (mm) | 4 (101.5) | 5.14 (130.5) | 1.14 (29) 28.6% |
| Revolutions per mile (km) | 806.98 (501.43) | 739.42 (459.45) | -67.56 (-41.98) -8.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.83 mph (35.13 km/h) |
| 25 mph (40.23 km/h) | 27.28 mph (43.91 km/h) |
| 30 mph (48.28 km/h) | 32.74 mph (52.69 km/h) |
| 35 mph (56.33 km/h) | 38.2 mph (61.47 km/h) |
| 40 mph (64.37 km/h) | 43.65 mph (70.26 km/h) |
| 45 mph (72.42 km/h) | 49.11 mph (79.04 km/h) |
| 50 mph (80.47 km/h) | 54.57 mph (87.82 km/h) |
| 55 mph (88.51 km/h) | 60.03 mph (96.6 km/h) |
| 60 mph (96.56 km/h) | 65.48 mph (105.38 km/h) |
| 65 mph (104.61 km/h) | 70.94 mph (114.17 km/h) |
| 70 mph (112.65 km/h) | 76.4 mph (122.95 km/h) |
| 75 mph (120.7 km/h) | 81.85 mph (131.73 km/h) |
| 80 mph (128.75 km/h) | 87.31 mph (140.51 km/h) |
| 85 mph (136.79 km/h) | 92.77 mph (149.29 km/h) |
| 90 mph (144.84 km/h) | 98.22 mph (158.07 km/h) |
| 95 mph (152.89 km/h) | 103.68 mph (166.86 km/h) |
| 100 mph (160.93 km/h) | 109.14 mph (175.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1882 | 2186 | 2354 | 2458 | 2570 | 2650 | 2738 | 2843 | 2987 | 3131 | 3291 | 3419 | 3651 | 3907 | 4108 | 4236 | 4308 | 4572 | 4940 | 5741 |
Better Fuel Economy Factory Ratios Increased Power
