Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-18 | 225/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 28.63 (727.2) | 2.13 (54) 8% |
| Width inches (mm) | 5.31 (135) | 8.86 (225) | 3.54 (90) 66.7% |
| Circum. inches (mm) | 83.26 (2114.92) | 89.94 (2284.57) | 6.68 (169.65) 8% |
| Sidewall Height inches (mm) | 4.25 (108) | 5.31 (135) | 1.06 (27) 25% |
| Revolutions per mile (km) | 760.95 (472.83) | 704.44 (437.72) | -56.51 (-35.11) -7.4% |
225/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.6 mph (34.77 km/h) |
| 25 mph (40.23 km/h) | 27.01 mph (43.46 km/h) |
| 30 mph (48.28 km/h) | 32.41 mph (52.15 km/h) |
| 35 mph (56.33 km/h) | 37.81 mph (60.85 km/h) |
| 40 mph (64.37 km/h) | 43.21 mph (69.54 km/h) |
| 45 mph (72.42 km/h) | 48.61 mph (78.23 km/h) |
| 50 mph (80.47 km/h) | 54.01 mph (86.92 km/h) |
| 55 mph (88.51 km/h) | 59.41 mph (95.61 km/h) |
| 60 mph (96.56 km/h) | 64.81 mph (104.31 km/h) |
| 65 mph (104.61 km/h) | 70.21 mph (113 km/h) |
| 70 mph (112.65 km/h) | 75.61 mph (121.69 km/h) |
| 75 mph (120.7 km/h) | 81.02 mph (130.38 km/h) |
| 80 mph (128.75 km/h) | 86.42 mph (139.08 km/h) |
| 85 mph (136.79 km/h) | 91.82 mph (147.77 km/h) |
| 90 mph (144.84 km/h) | 97.22 mph (156.46 km/h) |
| 95 mph (152.89 km/h) | 102.62 mph (165.15 km/h) |
| 100 mph (160.93 km/h) | 108.02 mph (173.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1793 | 2083 | 2243 | 2342 | 2449 | 2525 | 2609 | 2708 | 2845 | 2983 | 3135 | 3257 | 3479 | 3723 | 3913 | 4035 | 4104 | 4356 | 4707 | 5470 |
Better Fuel Economy Factory Ratios Increased Power
