Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-16 | 325/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.47 (773.9) | 33.35 (847.2) | 2.89 (73.3) 9.5% |
| Width inches (mm) | 9.65 (245) | 12.8 (325) | 3.15 (80) 32.7% |
| Circum. inches (mm) | 95.72 (2431.28) | 104.79 (2661.56) | 9.07 (230.28) 9.5% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 7.68 (195) | 0.44 (11.25) 6.1% |
| Revolutions per mile (km) | 661.93 (411.31) | 604.66 (375.72) | -57.27 (-35.59) -8.7% |
325/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.89 mph (35.24 km/h) |
| 25 mph (40.23 km/h) | 27.37 mph (44.04 km/h) |
| 30 mph (48.28 km/h) | 32.84 mph (52.85 km/h) |
| 35 mph (56.33 km/h) | 38.32 mph (61.66 km/h) |
| 40 mph (64.37 km/h) | 43.79 mph (70.47 km/h) |
| 45 mph (72.42 km/h) | 49.26 mph (79.28 km/h) |
| 50 mph (80.47 km/h) | 54.74 mph (88.09 km/h) |
| 55 mph (88.51 km/h) | 60.21 mph (96.9 km/h) |
| 60 mph (96.56 km/h) | 65.68 mph (105.71 km/h) |
| 65 mph (104.61 km/h) | 71.16 mph (114.52 km/h) |
| 70 mph (112.65 km/h) | 76.63 mph (123.32 km/h) |
| 75 mph (120.7 km/h) | 82.1 mph (132.13 km/h) |
| 80 mph (128.75 km/h) | 87.58 mph (140.94 km/h) |
| 85 mph (136.79 km/h) | 93.05 mph (149.75 km/h) |
| 90 mph (144.84 km/h) | 98.52 mph (158.56 km/h) |
| 95 mph (152.89 km/h) | 104 mph (167.37 km/h) |
| 100 mph (160.93 km/h) | 109.47 mph (176.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1539 | 1788 | 1925 | 2010 | 2102 | 2167 | 2239 | 2324 | 2442 | 2560 | 2691 | 2796 | 2986 | 3195 | 3359 | 3464 | 3523 | 3739 | 4040 | 4695 |
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