Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/70-18 | 120/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.17 (639.2) | 26.5 (673.2) | 1.34 (34) 5.3% |
| Width inches (mm) | 5.12 (130) | 4.72 (120) | -0.39 (-10) -7.7% |
| Circum. inches (mm) | 79.06 (2008.11) | 83.26 (2114.92) | 4.21 (106.81) 5.3% |
| Sidewall Height inches (mm) | 3.58 (91) | 4.25 (108) | 0.67 (17) 18.7% |
| Revolutions per mile (km) | 801.42 (497.98) | 760.95 (472.83) | -40.48 (-25.15) -5.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.06 mph (33.9 km/h) |
| 25 mph (40.23 km/h) | 26.33 mph (42.37 km/h) |
| 30 mph (48.28 km/h) | 31.6 mph (50.85 km/h) |
| 35 mph (56.33 km/h) | 36.86 mph (59.32 km/h) |
| 40 mph (64.37 km/h) | 42.13 mph (67.8 km/h) |
| 45 mph (72.42 km/h) | 47.39 mph (76.27 km/h) |
| 50 mph (80.47 km/h) | 52.66 mph (84.75 km/h) |
| 55 mph (88.51 km/h) | 57.93 mph (93.22 km/h) |
| 60 mph (96.56 km/h) | 63.19 mph (101.7 km/h) |
| 65 mph (104.61 km/h) | 68.46 mph (110.17 km/h) |
| 70 mph (112.65 km/h) | 73.72 mph (118.65 km/h) |
| 75 mph (120.7 km/h) | 78.99 mph (127.12 km/h) |
| 80 mph (128.75 km/h) | 84.26 mph (135.6 km/h) |
| 85 mph (136.79 km/h) | 89.52 mph (144.07 km/h) |
| 90 mph (144.84 km/h) | 94.79 mph (152.55 km/h) |
| 95 mph (152.89 km/h) | 100.05 mph (161.02 km/h) |
| 100 mph (160.93 km/h) | 105.32 mph (169.5 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1936 | 2250 | 2423 | 2530 | 2645 | 2728 | 2818 | 2925 | 3074 | 3222 | 3387 | 3519 | 3758 | 4021 | 4227 | 4359 | 4433 | 4705 | 5084 | 5908 |
Better Fuel Economy Factory Ratios Increased Power
