Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-13 | 145/45-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.44 (519.2) | 18.14 (460.7) | -2.3 (-58.5) -11.3% |
| Width inches (mm) | 5.31 (135) | 5.71 (145) | 0.39 (10) 7.4% |
| Circum. inches (mm) | 64.22 (1631.11) | 56.98 (1447.33) | -7.24 (-183.78) -11.3% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 2.57 (65.25) | -1.15 (-29.25) -31% |
| Revolutions per mile (km) | 986.65 (613.08) | 1111.94 (690.93) | 125.29 (77.85) 12.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.75 mph (28.56 km/h) |
| 25 mph (40.23 km/h) | 22.18 mph (35.7 km/h) |
| 30 mph (48.28 km/h) | 26.62 mph (42.84 km/h) |
| 35 mph (56.33 km/h) | 31.06 mph (49.98 km/h) |
| 40 mph (64.37 km/h) | 35.49 mph (57.12 km/h) |
| 45 mph (72.42 km/h) | 39.93 mph (64.26 km/h) |
| 50 mph (80.47 km/h) | 44.37 mph (71.4 km/h) |
| 55 mph (88.51 km/h) | 48.8 mph (78.54 km/h) |
| 60 mph (96.56 km/h) | 53.24 mph (85.68 km/h) |
| 65 mph (104.61 km/h) | 57.68 mph (92.82 km/h) |
| 70 mph (112.65 km/h) | 62.11 mph (99.96 km/h) |
| 75 mph (120.7 km/h) | 66.55 mph (107.1 km/h) |
| 80 mph (128.75 km/h) | 70.99 mph (114.24 km/h) |
| 85 mph (136.79 km/h) | 75.42 mph (121.38 km/h) |
| 90 mph (144.84 km/h) | 79.86 mph (128.52 km/h) |
| 95 mph (152.89 km/h) | 84.3 mph (135.66 km/h) |
| 100 mph (160.93 km/h) | 88.73 mph (142.8 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
