Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/65-18 | 355/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.63 (879.7) | 36.17 (918.7) | 1.54 (39) 4.4% |
| Width inches (mm) | 12.8 (325) | 13.98 (355) | 1.18 (30) 9.2% |
| Circum. inches (mm) | 108.81 (2763.66) | 113.63 (2886.18) | 4.82 (122.52) 4.4% |
| Sidewall Height inches (mm) | 8.32 (211.25) | 9.08 (230.75) | 0.77 (19.5) 9.2% |
| Revolutions per mile (km) | 582.32 (361.84) | 557.6 (346.48) | -24.72 (-15.36) -4.2% |
355/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.89 mph (33.61 km/h) |
| 25 mph (40.23 km/h) | 26.11 mph (42.02 km/h) |
| 30 mph (48.28 km/h) | 31.33 mph (50.42 km/h) |
| 35 mph (56.33 km/h) | 36.55 mph (58.82 km/h) |
| 40 mph (64.37 km/h) | 41.77 mph (67.23 km/h) |
| 45 mph (72.42 km/h) | 46.99 mph (75.63 km/h) |
| 50 mph (80.47 km/h) | 52.22 mph (84.03 km/h) |
| 55 mph (88.51 km/h) | 57.44 mph (92.44 km/h) |
| 60 mph (96.56 km/h) | 62.66 mph (100.84 km/h) |
| 65 mph (104.61 km/h) | 67.88 mph (109.25 km/h) |
| 70 mph (112.65 km/h) | 73.1 mph (117.65 km/h) |
| 75 mph (120.7 km/h) | 78.32 mph (126.05 km/h) |
| 80 mph (128.75 km/h) | 83.55 mph (134.46 km/h) |
| 85 mph (136.79 km/h) | 88.77 mph (142.86 km/h) |
| 90 mph (144.84 km/h) | 93.99 mph (151.26 km/h) |
| 95 mph (152.89 km/h) | 99.21 mph (159.67 km/h) |
| 100 mph (160.93 km/h) | 104.43 mph (168.07 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1419 | 1648 | 1775 | 1854 | 1938 | 1999 | 2065 | 2144 | 2252 | 2361 | 2482 | 2578 | 2753 | 2947 | 3098 | 3194 | 3249 | 3448 | 3726 | 4329 |
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