Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-18 | 165/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 29.69 (754.2) | 3.19 (81) 12% |
| Width inches (mm) | 5.31 (135) | 6.5 (165) | 1.18 (30) 22.2% |
| Circum. inches (mm) | 83.26 (2114.92) | 93.28 (2369.39) | 10.02 (254.47) 12% |
| Sidewall Height inches (mm) | 4.25 (108) | 5.85 (148.5) | 1.59 (40.5) 37.5% |
| Revolutions per mile (km) | 760.95 (472.83) | 679.22 (422.05) | -81.72 (-50.78) -10.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.41 mph (36.06 km/h) |
| 25 mph (40.23 km/h) | 28.01 mph (45.07 km/h) |
| 30 mph (48.28 km/h) | 33.61 mph (54.09 km/h) |
| 35 mph (56.33 km/h) | 39.21 mph (63.1 km/h) |
| 40 mph (64.37 km/h) | 44.81 mph (72.12 km/h) |
| 45 mph (72.42 km/h) | 50.41 mph (81.13 km/h) |
| 50 mph (80.47 km/h) | 56.02 mph (90.15 km/h) |
| 55 mph (88.51 km/h) | 61.62 mph (99.16 km/h) |
| 60 mph (96.56 km/h) | 67.22 mph (108.18 km/h) |
| 65 mph (104.61 km/h) | 72.82 mph (117.19 km/h) |
| 70 mph (112.65 km/h) | 78.42 mph (126.21 km/h) |
| 75 mph (120.7 km/h) | 84.02 mph (135.22 km/h) |
| 80 mph (128.75 km/h) | 89.63 mph (144.24 km/h) |
| 85 mph (136.79 km/h) | 95.23 mph (153.25 km/h) |
| 90 mph (144.84 km/h) | 100.83 mph (162.27 km/h) |
| 95 mph (152.89 km/h) | 106.43 mph (171.28 km/h) |
| 100 mph (160.93 km/h) | 112.03 mph (180.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1728 | 2008 | 2162 | 2258 | 2361 | 2435 | 2516 | 2611 | 2744 | 2876 | 3023 | 3141 | 3354 | 3589 | 3773 | 3891 | 3957 | 4200 | 4538 | 5274 |
Better Fuel Economy Factory Ratios Increased Power
