Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/40-18 | 335/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.24 (717.2) | 28.55 (725.2) | 0.31 (8) 1.1% |
| Width inches (mm) | 12.8 (325) | 13.19 (335) | 0.39 (10) 3.1% |
| Circum. inches (mm) | 88.71 (2253.15) | 89.7 (2278.28) | 0.99 (25.13) 1.1% |
| Sidewall Height inches (mm) | 5.12 (130) | 5.28 (134) | 0.16 (4) 3.1% |
| Revolutions per mile (km) | 714.26 (443.82) | 706.38 (438.93) | -7.88 (-4.9) -1.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.22 mph (32.55 km/h) |
| 25 mph (40.23 km/h) | 25.28 mph (40.68 km/h) |
| 30 mph (48.28 km/h) | 30.33 mph (48.82 km/h) |
| 35 mph (56.33 km/h) | 35.39 mph (56.96 km/h) |
| 40 mph (64.37 km/h) | 40.45 mph (65.09 km/h) |
| 45 mph (72.42 km/h) | 45.5 mph (73.23 km/h) |
| 50 mph (80.47 km/h) | 50.56 mph (81.36 km/h) |
| 55 mph (88.51 km/h) | 55.61 mph (89.5 km/h) |
| 60 mph (96.56 km/h) | 60.67 mph (97.64 km/h) |
| 65 mph (104.61 km/h) | 65.73 mph (105.77 km/h) |
| 70 mph (112.65 km/h) | 70.78 mph (113.91 km/h) |
| 75 mph (120.7 km/h) | 75.84 mph (122.05 km/h) |
| 80 mph (128.75 km/h) | 80.89 mph (130.18 km/h) |
| 85 mph (136.79 km/h) | 85.95 mph (138.32 km/h) |
| 90 mph (144.84 km/h) | 91 mph (146.46 km/h) |
| 95 mph (152.89 km/h) | 96.06 mph (154.59 km/h) |
| 100 mph (160.93 km/h) | 101.12 mph (162.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1798 | 2088 | 2249 | 2348 | 2455 | 2532 | 2616 | 2716 | 2853 | 2991 | 3144 | 3266 | 3488 | 3733 | 3924 | 4047 | 4115 | 4368 | 4720 | 5485 |
Better Fuel Economy Factory Ratios Increased Power
