Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 90/90-18 | 110/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.38 (619.2) | 25.8 (655.2) | 1.42 (36) 5.8% |
| Width inches (mm) | 3.54 (90) | 4.33 (110) | 0.79 (20) 22.2% |
| Circum. inches (mm) | 76.59 (1945.27) | 81.04 (2058.37) | 4.45 (113.1) 5.8% |
| Sidewall Height inches (mm) | 3.19 (81) | 3.9 (99) | 0.71 (18) 22.2% |
| Revolutions per mile (km) | 827.31 (514.07) | 781.85 (485.82) | -45.46 (-28.25) -5.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.16 mph (34.06 km/h) |
| 25 mph (40.23 km/h) | 26.45 mph (42.57 km/h) |
| 30 mph (48.28 km/h) | 31.74 mph (51.09 km/h) |
| 35 mph (56.33 km/h) | 37.03 mph (59.6 km/h) |
| 40 mph (64.37 km/h) | 42.33 mph (68.12 km/h) |
| 45 mph (72.42 km/h) | 47.62 mph (76.63 km/h) |
| 50 mph (80.47 km/h) | 52.91 mph (85.15 km/h) |
| 55 mph (88.51 km/h) | 58.2 mph (93.66 km/h) |
| 60 mph (96.56 km/h) | 63.49 mph (102.17 km/h) |
| 65 mph (104.61 km/h) | 68.78 mph (110.69 km/h) |
| 70 mph (112.65 km/h) | 74.07 mph (119.2 km/h) |
| 75 mph (120.7 km/h) | 79.36 mph (127.72 km/h) |
| 80 mph (128.75 km/h) | 84.65 mph (136.23 km/h) |
| 85 mph (136.79 km/h) | 89.94 mph (144.75 km/h) |
| 90 mph (144.84 km/h) | 95.23 mph (153.26 km/h) |
| 95 mph (152.89 km/h) | 100.52 mph (161.78 km/h) |
| 100 mph (160.93 km/h) | 105.81 mph (170.29 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
