Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/45-16 | 325/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.16 (689.9) | 26.96 (684.7) | -0.2 (-5.2) -0.8% |
| Width inches (mm) | 12.4 (315) | 12.8 (325) | 0.39 (10) 3.2% |
| Circum. inches (mm) | 85.33 (2167.38) | 84.69 (2151.05) | -0.64 (-16.34) -0.8% |
| Sidewall Height inches (mm) | 5.58 (141.75) | 4.48 (113.75) | -1.1 (-28) -19.8% |
| Revolutions per mile (km) | 742.53 (461.38) | 748.17 (464.89) | 5.64 (3.5) 0.8% |
325/35-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.85 mph (31.94 km/h) |
| 25 mph (40.23 km/h) | 24.81 mph (39.93 km/h) |
| 30 mph (48.28 km/h) | 29.77 mph (47.92 km/h) |
| 35 mph (56.33 km/h) | 34.74 mph (55.9 km/h) |
| 40 mph (64.37 km/h) | 39.7 mph (63.89 km/h) |
| 45 mph (72.42 km/h) | 44.66 mph (71.87 km/h) |
| 50 mph (80.47 km/h) | 49.62 mph (79.86 km/h) |
| 55 mph (88.51 km/h) | 54.59 mph (87.85 km/h) |
| 60 mph (96.56 km/h) | 59.55 mph (95.83 km/h) |
| 65 mph (104.61 km/h) | 64.51 mph (103.82 km/h) |
| 70 mph (112.65 km/h) | 69.47 mph (111.81 km/h) |
| 75 mph (120.7 km/h) | 74.43 mph (119.79 km/h) |
| 80 mph (128.75 km/h) | 79.4 mph (127.78 km/h) |
| 85 mph (136.79 km/h) | 84.36 mph (135.76 km/h) |
| 90 mph (144.84 km/h) | 89.32 mph (143.75 km/h) |
| 95 mph (152.89 km/h) | 94.28 mph (151.74 km/h) |
| 100 mph (160.93 km/h) | 99.25 mph (159.72 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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