Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/45-18 | 325/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.81 (731.7) | 26.96 (684.7) | -1.85 (-47) -6.4% |
| Width inches (mm) | 12.01 (305) | 12.8 (325) | 0.79 (20) 6.6% |
| Circum. inches (mm) | 90.5 (2298.7) | 84.69 (2151.05) | -5.81 (-147.65) -6.4% |
| Sidewall Height inches (mm) | 5.4 (137.25) | 4.48 (113.75) | -0.93 (-23.5) -17.1% |
| Revolutions per mile (km) | 700.11 (435.03) | 748.17 (464.89) | 48.06 (29.86) 6.9% |
325/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.72 mph (30.12 km/h) |
| 25 mph (40.23 km/h) | 23.39 mph (37.65 km/h) |
| 30 mph (48.28 km/h) | 28.07 mph (45.18 km/h) |
| 35 mph (56.33 km/h) | 32.75 mph (52.71 km/h) |
| 40 mph (64.37 km/h) | 37.43 mph (60.24 km/h) |
| 45 mph (72.42 km/h) | 42.11 mph (67.77 km/h) |
| 50 mph (80.47 km/h) | 46.79 mph (75.3 km/h) |
| 55 mph (88.51 km/h) | 51.47 mph (82.83 km/h) |
| 60 mph (96.56 km/h) | 56.15 mph (90.36 km/h) |
| 65 mph (104.61 km/h) | 60.82 mph (97.89 km/h) |
| 70 mph (112.65 km/h) | 65.5 mph (105.42 km/h) |
| 75 mph (120.7 km/h) | 70.18 mph (112.95 km/h) |
| 80 mph (128.75 km/h) | 74.86 mph (120.48 km/h) |
| 85 mph (136.79 km/h) | 79.54 mph (128.01 km/h) |
| 90 mph (144.84 km/h) | 84.22 mph (135.54 km/h) |
| 95 mph (152.89 km/h) | 88.9 mph (143.07 km/h) |
| 100 mph (160.93 km/h) | 93.58 mph (150.6 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1904 | 2212 | 2382 | 2487 | 2601 | 2682 | 2771 | 2876 | 3022 | 3168 | 3330 | 3460 | 3694 | 3954 | 4156 | 4286 | 4359 | 4626 | 4999 | 5809 |
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