Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-17 | 135/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.57 (674.8) | 23.19 (589) | -3.38 (-85.8) -12.7% |
| Width inches (mm) | 5.31 (135) | 5.31 (135) | 0 (0) 0% |
| Circum. inches (mm) | 83.46 (2119.95) | 72.85 (1850.4) | -10.61 (-269.55) -12.7% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 1.59 (40.5) | -3.19 (-81) -66.7% |
| Revolutions per mile (km) | 759.14 (471.71) | 869.73 (540.42) | 110.58 (68.71) 14.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.46 mph (28.09 km/h) |
| 25 mph (40.23 km/h) | 21.82 mph (35.12 km/h) |
| 30 mph (48.28 km/h) | 26.19 mph (42.14 km/h) |
| 35 mph (56.33 km/h) | 30.55 mph (49.17 km/h) |
| 40 mph (64.37 km/h) | 34.91 mph (56.19 km/h) |
| 45 mph (72.42 km/h) | 39.28 mph (63.21 km/h) |
| 50 mph (80.47 km/h) | 43.64 mph (70.24 km/h) |
| 55 mph (88.51 km/h) | 48.01 mph (77.26 km/h) |
| 60 mph (96.56 km/h) | 52.37 mph (84.28 km/h) |
| 65 mph (104.61 km/h) | 56.74 mph (91.31 km/h) |
| 70 mph (112.65 km/h) | 61.1 mph (98.33 km/h) |
| 75 mph (120.7 km/h) | 65.46 mph (105.35 km/h) |
| 80 mph (128.75 km/h) | 69.83 mph (112.38 km/h) |
| 85 mph (136.79 km/h) | 74.19 mph (119.4 km/h) |
| 90 mph (144.84 km/h) | 78.56 mph (126.42 km/h) |
| 95 mph (152.89 km/h) | 82.92 mph (133.45 km/h) |
| 100 mph (160.93 km/h) | 87.29 mph (140.47 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2213 | 2571 | 2769 | 2891 | 3023 | 3117 | 3221 | 3343 | 3513 | 3683 | 3871 | 4022 | 4295 | 4596 | 4832 | 4982 | 5067 | 5378 | 5811 | 6753 |
Better Fuel Economy Factory Ratios Increased Power
