Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/65-18 | 355/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.52 (749.7) | 36.17 (918.7) | 6.65 (169) 22.5% |
| Width inches (mm) | 8.86 (225) | 13.98 (355) | 5.12 (130) 57.8% |
| Circum. inches (mm) | 92.73 (2355.25) | 113.63 (2886.18) | 20.9 (530.93) 22.5% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 9.08 (230.75) | 3.33 (84.5) 57.8% |
| Revolutions per mile (km) | 683.3 (424.58) | 557.6 (346.48) | -125.7 (-78.1) -18.4% |
355/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.51 mph (39.44 km/h) |
| 25 mph (40.23 km/h) | 30.64 mph (49.3 km/h) |
| 30 mph (48.28 km/h) | 36.76 mph (59.16 km/h) |
| 35 mph (56.33 km/h) | 42.89 mph (69.02 km/h) |
| 40 mph (64.37 km/h) | 49.02 mph (78.89 km/h) |
| 45 mph (72.42 km/h) | 55.14 mph (88.75 km/h) |
| 50 mph (80.47 km/h) | 61.27 mph (98.61 km/h) |
| 55 mph (88.51 km/h) | 67.4 mph (108.47 km/h) |
| 60 mph (96.56 km/h) | 73.53 mph (118.33 km/h) |
| 65 mph (104.61 km/h) | 79.65 mph (128.19 km/h) |
| 70 mph (112.65 km/h) | 85.78 mph (138.05 km/h) |
| 75 mph (120.7 km/h) | 91.91 mph (147.91 km/h) |
| 80 mph (128.75 km/h) | 98.03 mph (157.77 km/h) |
| 85 mph (136.79 km/h) | 104.16 mph (167.63 km/h) |
| 90 mph (144.84 km/h) | 110.29 mph (177.49 km/h) |
| 95 mph (152.89 km/h) | 116.42 mph (187.35 km/h) |
| 100 mph (160.93 km/h) | 122.54 mph (197.21 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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