Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/30-18 | 245/30-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.55 (598.2) | 23.79 (604.2) | 0.24 (6) 1% |
| Width inches (mm) | 9.25 (235) | 9.65 (245) | 0.39 (10) 4.3% |
| Circum. inches (mm) | 73.99 (1879.3) | 74.73 (1898.15) | 0.74 (18.85) 1% |
| Sidewall Height inches (mm) | 2.78 (70.5) | 2.89 (73.5) | 0.12 (3) 4.3% |
| Revolutions per mile (km) | 856.35 (532.11) | 847.85 (526.83) | -8.5 (-5.28) -1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.2 mph (32.51 km/h) |
| 25 mph (40.23 km/h) | 25.25 mph (40.64 km/h) |
| 30 mph (48.28 km/h) | 30.3 mph (48.76 km/h) |
| 35 mph (56.33 km/h) | 35.35 mph (56.89 km/h) |
| 40 mph (64.37 km/h) | 40.4 mph (65.02 km/h) |
| 45 mph (72.42 km/h) | 45.45 mph (73.15 km/h) |
| 50 mph (80.47 km/h) | 50.5 mph (81.27 km/h) |
| 55 mph (88.51 km/h) | 55.55 mph (89.4 km/h) |
| 60 mph (96.56 km/h) | 60.6 mph (97.53 km/h) |
| 65 mph (104.61 km/h) | 65.65 mph (105.66 km/h) |
| 70 mph (112.65 km/h) | 70.7 mph (113.78 km/h) |
| 75 mph (120.7 km/h) | 75.75 mph (121.91 km/h) |
| 80 mph (128.75 km/h) | 80.8 mph (130.04 km/h) |
| 85 mph (136.79 km/h) | 85.85 mph (138.17 km/h) |
| 90 mph (144.84 km/h) | 90.9 mph (146.29 km/h) |
| 95 mph (152.89 km/h) | 95.95 mph (154.42 km/h) |
| 100 mph (160.93 km/h) | 101 mph (162.55 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
