Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-18 | 135/70-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.99 (660.2) | 26.44 (671.6) | 0.45 (11.4) 1.7% |
| Width inches (mm) | 5.71 (145) | 5.31 (135) | -0.39 (-10) -6.9% |
| Circum. inches (mm) | 81.66 (2074.08) | 83.07 (2109.89) | 1.41 (35.81) 1.7% |
| Sidewall Height inches (mm) | 4 (101.5) | 3.72 (94.5) | -0.28 (-7) -6.9% |
| Revolutions per mile (km) | 775.93 (482.14) | 762.76 (473.96) | -13.17 (-8.18) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.35 mph (32.74 km/h) |
| 25 mph (40.23 km/h) | 25.43 mph (40.93 km/h) |
| 30 mph (48.28 km/h) | 30.52 mph (49.11 km/h) |
| 35 mph (56.33 km/h) | 35.6 mph (57.3 km/h) |
| 40 mph (64.37 km/h) | 40.69 mph (65.49 km/h) |
| 45 mph (72.42 km/h) | 45.78 mph (73.67 km/h) |
| 50 mph (80.47 km/h) | 50.86 mph (81.86 km/h) |
| 55 mph (88.51 km/h) | 55.95 mph (90.04 km/h) |
| 60 mph (96.56 km/h) | 61.04 mph (98.23 km/h) |
| 65 mph (104.61 km/h) | 66.12 mph (106.41 km/h) |
| 70 mph (112.65 km/h) | 71.21 mph (114.6 km/h) |
| 75 mph (120.7 km/h) | 76.3 mph (122.79 km/h) |
| 80 mph (128.75 km/h) | 81.38 mph (130.97 km/h) |
| 85 mph (136.79 km/h) | 86.47 mph (139.16 km/h) |
| 90 mph (144.84 km/h) | 91.55 mph (147.34 km/h) |
| 95 mph (152.89 km/h) | 96.64 mph (155.53 km/h) |
| 100 mph (160.93 km/h) | 101.73 mph (163.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1941 | 2255 | 2428 | 2536 | 2651 | 2734 | 2825 | 2932 | 3081 | 3230 | 3395 | 3527 | 3767 | 4031 | 4237 | 4369 | 4444 | 4716 | 5096 | 5922 |
Better Fuel Economy Factory Ratios Increased Power
