Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/45-18 | 245/30-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 23.79 (604.2) | -2.72 (-69) -10.2% |
| Width inches (mm) | 9.45 (240) | 9.65 (245) | 0.2 (5) 2.1% |
| Circum. inches (mm) | 83.26 (2114.92) | 74.73 (1898.15) | -8.53 (-216.77) -10.2% |
| Sidewall Height inches (mm) | 4.25 (108) | 2.89 (73.5) | -1.36 (-34.5) -31.9% |
| Revolutions per mile (km) | 760.95 (472.83) | 847.85 (526.83) | 86.9 (54) 11.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.95 mph (28.89 km/h) |
| 25 mph (40.23 km/h) | 22.44 mph (36.11 km/h) |
| 30 mph (48.28 km/h) | 26.93 mph (43.33 km/h) |
| 35 mph (56.33 km/h) | 31.41 mph (50.55 km/h) |
| 40 mph (64.37 km/h) | 35.9 mph (57.78 km/h) |
| 45 mph (72.42 km/h) | 40.39 mph (65 km/h) |
| 50 mph (80.47 km/h) | 44.88 mph (72.22 km/h) |
| 55 mph (88.51 km/h) | 49.36 mph (79.44 km/h) |
| 60 mph (96.56 km/h) | 53.85 mph (86.66 km/h) |
| 65 mph (104.61 km/h) | 58.34 mph (93.89 km/h) |
| 70 mph (112.65 km/h) | 62.83 mph (101.11 km/h) |
| 75 mph (120.7 km/h) | 67.31 mph (108.33 km/h) |
| 80 mph (128.75 km/h) | 71.8 mph (115.55 km/h) |
| 85 mph (136.79 km/h) | 76.29 mph (122.77 km/h) |
| 90 mph (144.84 km/h) | 80.78 mph (130 km/h) |
| 95 mph (152.89 km/h) | 85.26 mph (137.22 km/h) |
| 100 mph (160.93 km/h) | 89.75 mph (144.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2158 | 2507 | 2699 | 2819 | 2947 | 3039 | 3140 | 3259 | 3425 | 3590 | 3774 | 3920 | 4187 | 4480 | 4710 | 4857 | 4940 | 5243 | 5665 | 6583 |
Better Fuel Economy Factory Ratios Increased Power
