Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/40-18 | 335/30-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.72 (653.2) | 25.91 (658.2) | 0.2 (5) 0.8% |
| Width inches (mm) | 9.65 (245) | 13.19 (335) | 3.54 (90) 36.7% |
| Circum. inches (mm) | 80.79 (2052.09) | 81.41 (2067.8) | 0.62 (15.71) 0.8% |
| Sidewall Height inches (mm) | 3.86 (98) | 3.96 (100.5) | 0.1 (2.5) 2.6% |
| Revolutions per mile (km) | 784.25 (487.31) | 778.29 (483.61) | -5.96 (-3.7) -0.8% |
335/30-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.15 mph (32.43 km/h) |
| 25 mph (40.23 km/h) | 25.19 mph (40.54 km/h) |
| 30 mph (48.28 km/h) | 30.23 mph (48.65 km/h) |
| 35 mph (56.33 km/h) | 35.27 mph (56.76 km/h) |
| 40 mph (64.37 km/h) | 40.31 mph (64.87 km/h) |
| 45 mph (72.42 km/h) | 45.34 mph (72.97 km/h) |
| 50 mph (80.47 km/h) | 50.38 mph (81.08 km/h) |
| 55 mph (88.51 km/h) | 55.42 mph (89.19 km/h) |
| 60 mph (96.56 km/h) | 60.46 mph (97.3 km/h) |
| 65 mph (104.61 km/h) | 65.5 mph (105.41 km/h) |
| 70 mph (112.65 km/h) | 70.54 mph (113.52 km/h) |
| 75 mph (120.7 km/h) | 75.57 mph (121.62 km/h) |
| 80 mph (128.75 km/h) | 80.61 mph (129.73 km/h) |
| 85 mph (136.79 km/h) | 85.65 mph (137.84 km/h) |
| 90 mph (144.84 km/h) | 90.69 mph (145.95 km/h) |
| 95 mph (152.89 km/h) | 95.73 mph (154.06 km/h) |
| 100 mph (160.93 km/h) | 100.77 mph (162.17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1981 | 2301 | 2478 | 2587 | 2705 | 2790 | 2882 | 2992 | 3144 | 3295 | 3464 | 3599 | 3843 | 4113 | 4324 | 4458 | 4534 | 4812 | 5200 | 6043 |
Better Fuel Economy Factory Ratios Increased Power
