Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-15 | 145/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.57 (624) | 21.28 (540.5) | -3.29 (-83.5) -13.4% |
| Width inches (mm) | 5.31 (135) | 5.71 (145) | 0.39 (10) 7.4% |
| Circum. inches (mm) | 77.18 (1960.35) | 66.85 (1698.03) | -10.33 (-262.32) -13.4% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 3.14 (79.75) | -1.64 (-41.75) -34.4% |
| Revolutions per mile (km) | 820.95 (510.11) | 947.77 (588.92) | 126.83 (78.81) 15.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.32 mph (27.88 km/h) |
| 25 mph (40.23 km/h) | 21.65 mph (34.85 km/h) |
| 30 mph (48.28 km/h) | 25.99 mph (41.82 km/h) |
| 35 mph (56.33 km/h) | 30.32 mph (48.79 km/h) |
| 40 mph (64.37 km/h) | 34.65 mph (55.76 km/h) |
| 45 mph (72.42 km/h) | 38.98 mph (62.73 km/h) |
| 50 mph (80.47 km/h) | 43.31 mph (69.7 km/h) |
| 55 mph (88.51 km/h) | 47.64 mph (76.67 km/h) |
| 60 mph (96.56 km/h) | 51.97 mph (83.64 km/h) |
| 65 mph (104.61 km/h) | 56.3 mph (90.61 km/h) |
| 70 mph (112.65 km/h) | 60.63 mph (97.58 km/h) |
| 75 mph (120.7 km/h) | 64.96 mph (104.55 km/h) |
| 80 mph (128.75 km/h) | 69.29 mph (111.52 km/h) |
| 85 mph (136.79 km/h) | 73.63 mph (118.49 km/h) |
| 90 mph (144.84 km/h) | 77.96 mph (125.46 km/h) |
| 95 mph (152.89 km/h) | 82.29 mph (132.43 km/h) |
| 100 mph (160.93 km/h) | 86.62 mph (139.4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
