Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 335/30-18 | 305/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.91 (658.2) | 28.81 (731.7) | 2.89 (73.5) 11.2% |
| Width inches (mm) | 13.19 (335) | 12.01 (305) | -1.18 (-30) -9% |
| Circum. inches (mm) | 81.41 (2067.8) | 90.5 (2298.7) | 9.09 (230.91) 11.2% |
| Sidewall Height inches (mm) | 3.96 (100.5) | 5.4 (137.25) | 1.45 (36.75) 36.6% |
| Revolutions per mile (km) | 778.29 (483.61) | 700.11 (435.03) | -78.18 (-48.58) -10% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.23 mph (35.78 km/h) |
| 25 mph (40.23 km/h) | 27.79 mph (44.73 km/h) |
| 30 mph (48.28 km/h) | 33.35 mph (53.67 km/h) |
| 35 mph (56.33 km/h) | 38.91 mph (62.62 km/h) |
| 40 mph (64.37 km/h) | 44.47 mph (71.56 km/h) |
| 45 mph (72.42 km/h) | 50.03 mph (80.51 km/h) |
| 50 mph (80.47 km/h) | 55.58 mph (89.45 km/h) |
| 55 mph (88.51 km/h) | 61.14 mph (98.4 km/h) |
| 60 mph (96.56 km/h) | 66.7 mph (107.34 km/h) |
| 65 mph (104.61 km/h) | 72.26 mph (116.29 km/h) |
| 70 mph (112.65 km/h) | 77.82 mph (125.23 km/h) |
| 75 mph (120.7 km/h) | 83.38 mph (134.18 km/h) |
| 80 mph (128.75 km/h) | 88.93 mph (143.12 km/h) |
| 85 mph (136.79 km/h) | 94.49 mph (152.07 km/h) |
| 90 mph (144.84 km/h) | 100.05 mph (161.02 km/h) |
| 95 mph (152.89 km/h) | 105.61 mph (169.96 km/h) |
| 100 mph (160.93 km/h) | 111.17 mph (178.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1782 | 2070 | 2229 | 2328 | 2434 | 2509 | 2593 | 2691 | 2828 | 2964 | 3116 | 3237 | 3457 | 3700 | 3889 | 4011 | 4079 | 4329 | 4678 | 5436 |
Better Fuel Economy Factory Ratios Increased Power
