Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-18 | 135/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 23.31 (592.2) | -3.19 (-81) -12% |
| Width inches (mm) | 5.31 (135) | 5.31 (135) | 0 (0) 0% |
| Circum. inches (mm) | 83.26 (2114.92) | 73.25 (1860.45) | -10.02 (-254.47) -12% |
| Sidewall Height inches (mm) | 4.25 (108) | 2.66 (67.5) | -1.59 (-40.5) -37.5% |
| Revolutions per mile (km) | 760.95 (472.83) | 865.03 (537.5) | 104.08 (64.67) 13.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.59 mph (28.31 km/h) |
| 25 mph (40.23 km/h) | 21.99 mph (35.39 km/h) |
| 30 mph (48.28 km/h) | 26.39 mph (42.47 km/h) |
| 35 mph (56.33 km/h) | 30.79 mph (49.55 km/h) |
| 40 mph (64.37 km/h) | 35.19 mph (56.63 km/h) |
| 45 mph (72.42 km/h) | 39.59 mph (63.71 km/h) |
| 50 mph (80.47 km/h) | 43.98 mph (70.79 km/h) |
| 55 mph (88.51 km/h) | 48.38 mph (77.86 km/h) |
| 60 mph (96.56 km/h) | 52.78 mph (84.94 km/h) |
| 65 mph (104.61 km/h) | 57.18 mph (92.02 km/h) |
| 70 mph (112.65 km/h) | 61.58 mph (99.1 km/h) |
| 75 mph (120.7 km/h) | 65.98 mph (106.18 km/h) |
| 80 mph (128.75 km/h) | 70.37 mph (113.26 km/h) |
| 85 mph (136.79 km/h) | 74.77 mph (120.34 km/h) |
| 90 mph (144.84 km/h) | 79.17 mph (127.41 km/h) |
| 95 mph (152.89 km/h) | 83.57 mph (134.49 km/h) |
| 100 mph (160.93 km/h) | 87.97 mph (141.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2201 | 2557 | 2754 | 2876 | 3007 | 3101 | 3204 | 3325 | 3494 | 3663 | 3850 | 4000 | 4272 | 4571 | 4805 | 4955 | 5040 | 5349 | 5780 | 6716 |
Better Fuel Economy Factory Ratios Increased Power
