Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/85-18 | 35/8.25-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.03 (661.2) | 35.05 (890.2) | 9.02 (229) 34.6% |
| Width inches (mm) | 4.72 (120) | 8.27 (210) | 3.54 (90) 75% |
| Circum. inches (mm) | 81.78 (2077.22) | 110.1 (2796.65) | 28.32 (719.42) 34.6% |
| Sidewall Height inches (mm) | 4.02 (102) | 7.52 (191.1) | 3.51 (89.1) 87.4% |
| Revolutions per mile (km) | 774.76 (481.41) | 575.46 (357.57) | -199.3 (-123.84) -25.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.93 mph (43.33 km/h) |
| 25 mph (40.23 km/h) | 33.66 mph (54.17 km/h) |
| 30 mph (48.28 km/h) | 40.39 mph (65 km/h) |
| 35 mph (56.33 km/h) | 47.12 mph (75.84 km/h) |
| 40 mph (64.37 km/h) | 53.85 mph (86.67 km/h) |
| 45 mph (72.42 km/h) | 60.59 mph (97.5 km/h) |
| 50 mph (80.47 km/h) | 67.32 mph (108.34 km/h) |
| 55 mph (88.51 km/h) | 74.05 mph (119.17 km/h) |
| 60 mph (96.56 km/h) | 80.78 mph (130 km/h) |
| 65 mph (104.61 km/h) | 87.51 mph (140.84 km/h) |
| 70 mph (112.65 km/h) | 94.24 mph (151.67 km/h) |
| 75 mph (120.7 km/h) | 100.98 mph (162.5 km/h) |
| 80 mph (128.75 km/h) | 107.71 mph (173.34 km/h) |
| 85 mph (136.79 km/h) | 114.44 mph (184.17 km/h) |
| 90 mph (144.84 km/h) | 121.17 mph (195.01 km/h) |
| 95 mph (152.89 km/h) | 127.9 mph (205.84 km/h) |
| 100 mph (160.93 km/h) | 134.63 mph (216.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1464 | 1701 | 1832 | 1913 | 2000 | 2063 | 2131 | 2212 | 2324 | 2437 | 2561 | 2661 | 2842 | 3041 | 3197 | 3297 | 3353 | 3558 | 3845 | 4468 |
Better Fuel Economy Factory Ratios Increased Power
