Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-18 | 135/70-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 26.44 (671.6) | -0.06 (-1.6) -0.2% |
| Width inches (mm) | 5.31 (135) | 5.31 (135) | 0 (0) 0% |
| Circum. inches (mm) | 83.26 (2114.92) | 83.07 (2109.89) | -0.2 (-5.03) -0.2% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.72 (94.5) | -0.53 (-13.5) -12.5% |
| Revolutions per mile (km) | 760.95 (472.83) | 762.76 (473.96) | 1.81 (1.13) 0.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.95 mph (32.11 km/h) |
| 25 mph (40.23 km/h) | 24.94 mph (40.14 km/h) |
| 30 mph (48.28 km/h) | 29.93 mph (48.17 km/h) |
| 35 mph (56.33 km/h) | 34.92 mph (56.19 km/h) |
| 40 mph (64.37 km/h) | 39.9 mph (64.22 km/h) |
| 45 mph (72.42 km/h) | 44.89 mph (72.25 km/h) |
| 50 mph (80.47 km/h) | 49.88 mph (80.28 km/h) |
| 55 mph (88.51 km/h) | 54.87 mph (88.3 km/h) |
| 60 mph (96.56 km/h) | 59.86 mph (96.33 km/h) |
| 65 mph (104.61 km/h) | 64.85 mph (104.36 km/h) |
| 70 mph (112.65 km/h) | 69.83 mph (112.39 km/h) |
| 75 mph (120.7 km/h) | 74.82 mph (120.41 km/h) |
| 80 mph (128.75 km/h) | 79.81 mph (128.44 km/h) |
| 85 mph (136.79 km/h) | 84.8 mph (136.47 km/h) |
| 90 mph (144.84 km/h) | 89.79 mph (144.5 km/h) |
| 95 mph (152.89 km/h) | 94.77 mph (152.52 km/h) |
| 100 mph (160.93 km/h) | 99.76 mph (160.55 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
