Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 110/90-18 | 120/100-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.8 (655.2) | 27.45 (697.2) | 1.65 (42) 6.4% |
| Width inches (mm) | 4.33 (110) | 4.72 (120) | 0.39 (10) 9.1% |
| Circum. inches (mm) | 81.04 (2058.37) | 86.23 (2190.32) | 5.19 (131.95) 6.4% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.72 (120) | 0.83 (21) 21.2% |
| Revolutions per mile (km) | 781.85 (485.82) | 734.75 (456.55) | -47.1 (-29.27) -6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.28 mph (34.25 km/h) |
| 25 mph (40.23 km/h) | 26.6 mph (42.81 km/h) |
| 30 mph (48.28 km/h) | 31.92 mph (51.38 km/h) |
| 35 mph (56.33 km/h) | 37.24 mph (59.94 km/h) |
| 40 mph (64.37 km/h) | 42.56 mph (68.5 km/h) |
| 45 mph (72.42 km/h) | 47.88 mph (77.06 km/h) |
| 50 mph (80.47 km/h) | 53.21 mph (85.63 km/h) |
| 55 mph (88.51 km/h) | 58.53 mph (94.19 km/h) |
| 60 mph (96.56 km/h) | 63.85 mph (102.75 km/h) |
| 65 mph (104.61 km/h) | 69.17 mph (111.31 km/h) |
| 70 mph (112.65 km/h) | 74.49 mph (119.88 km/h) |
| 75 mph (120.7 km/h) | 79.81 mph (128.44 km/h) |
| 80 mph (128.75 km/h) | 85.13 mph (137 km/h) |
| 85 mph (136.79 km/h) | 90.45 mph (145.56 km/h) |
| 90 mph (144.84 km/h) | 95.77 mph (154.13 km/h) |
| 95 mph (152.89 km/h) | 101.09 mph (162.69 km/h) |
| 100 mph (160.93 km/h) | 106.41 mph (171.25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1870 | 2172 | 2339 | 2443 | 2554 | 2634 | 2721 | 2825 | 2968 | 3111 | 3270 | 3397 | 3628 | 3883 | 4082 | 4209 | 4281 | 4543 | 4909 | 5705 |
Better Fuel Economy Factory Ratios Increased Power
