Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/90-18 | 110/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 25.8 (655.2) | -0.71 (-18) -2.7% |
| Width inches (mm) | 4.72 (120) | 4.33 (110) | -0.39 (-10) -8.3% |
| Circum. inches (mm) | 83.26 (2114.92) | 81.04 (2058.37) | -2.23 (-56.55) -2.7% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.9 (99) | -0.35 (-9) -8.3% |
| Revolutions per mile (km) | 760.95 (472.83) | 781.85 (485.82) | 20.91 (12.99) 2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.47 mph (31.33 km/h) |
| 25 mph (40.23 km/h) | 24.33 mph (39.16 km/h) |
| 30 mph (48.28 km/h) | 29.2 mph (46.99 km/h) |
| 35 mph (56.33 km/h) | 34.06 mph (54.82 km/h) |
| 40 mph (64.37 km/h) | 38.93 mph (62.65 km/h) |
| 45 mph (72.42 km/h) | 43.8 mph (70.48 km/h) |
| 50 mph (80.47 km/h) | 48.66 mph (78.32 km/h) |
| 55 mph (88.51 km/h) | 53.53 mph (86.15 km/h) |
| 60 mph (96.56 km/h) | 58.4 mph (93.98 km/h) |
| 65 mph (104.61 km/h) | 63.26 mph (101.81 km/h) |
| 70 mph (112.65 km/h) | 68.13 mph (109.64 km/h) |
| 75 mph (120.7 km/h) | 72.99 mph (117.47 km/h) |
| 80 mph (128.75 km/h) | 77.86 mph (125.31 km/h) |
| 85 mph (136.79 km/h) | 82.73 mph (133.14 km/h) |
| 90 mph (144.84 km/h) | 87.59 mph (140.97 km/h) |
| 95 mph (152.89 km/h) | 92.46 mph (148.8 km/h) |
| 100 mph (160.93 km/h) | 97.33 mph (156.63 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1990 | 2311 | 2489 | 2599 | 2718 | 2802 | 2896 | 3006 | 3158 | 3310 | 3480 | 3615 | 3861 | 4132 | 4343 | 4479 | 4555 | 4834 | 5224 | 6071 |
Better Fuel Economy Factory Ratios Increased Power
