Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-13 | 145/70-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.44 (519.2) | 19.99 (507.8) | -0.45 (-11.4) -2.2% |
| Width inches (mm) | 5.31 (135) | 5.71 (145) | 0.39 (10) 7.4% |
| Circum. inches (mm) | 64.22 (1631.11) | 62.81 (1595.3) | -1.41 (-35.81) -2.2% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 4 (101.5) | 0.28 (7) 7.4% |
| Revolutions per mile (km) | 986.65 (613.08) | 1008.8 (626.84) | 22.15 (13.76) 2.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.56 mph (31.48 km/h) |
| 25 mph (40.23 km/h) | 24.45 mph (39.35 km/h) |
| 30 mph (48.28 km/h) | 29.34 mph (47.22 km/h) |
| 35 mph (56.33 km/h) | 34.23 mph (55.09 km/h) |
| 40 mph (64.37 km/h) | 39.12 mph (62.96 km/h) |
| 45 mph (72.42 km/h) | 44.01 mph (70.83 km/h) |
| 50 mph (80.47 km/h) | 48.9 mph (78.7 km/h) |
| 55 mph (88.51 km/h) | 53.79 mph (86.57 km/h) |
| 60 mph (96.56 km/h) | 58.68 mph (94.44 km/h) |
| 65 mph (104.61 km/h) | 63.57 mph (102.31 km/h) |
| 70 mph (112.65 km/h) | 68.46 mph (110.18 km/h) |
| 75 mph (120.7 km/h) | 73.35 mph (118.05 km/h) |
| 80 mph (128.75 km/h) | 78.24 mph (125.92 km/h) |
| 85 mph (136.79 km/h) | 83.13 mph (133.79 km/h) |
| 90 mph (144.84 km/h) | 88.02 mph (141.66 km/h) |
| 95 mph (152.89 km/h) | 92.91 mph (149.53 km/h) |
| 100 mph (160.93 km/h) | 97.8 mph (157.4 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
