Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/65-18 | 255/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.52 (749.7) | 31.05 (788.7) | 1.54 (39) 5.2% |
| Width inches (mm) | 8.86 (225) | 10.04 (255) | 1.18 (30) 13.3% |
| Circum. inches (mm) | 92.73 (2355.25) | 97.55 (2477.77) | 4.82 (122.52) 5.2% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 6.53 (165.75) | 0.77 (19.5) 13.3% |
| Revolutions per mile (km) | 683.3 (424.58) | 649.51 (403.59) | -33.79 (-20.99) -4.9% |
255/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.04 mph (33.86 km/h) |
| 25 mph (40.23 km/h) | 26.3 mph (42.33 km/h) |
| 30 mph (48.28 km/h) | 31.56 mph (50.79 km/h) |
| 35 mph (56.33 km/h) | 36.82 mph (59.26 km/h) |
| 40 mph (64.37 km/h) | 42.08 mph (67.72 km/h) |
| 45 mph (72.42 km/h) | 47.34 mph (76.19 km/h) |
| 50 mph (80.47 km/h) | 52.6 mph (84.65 km/h) |
| 55 mph (88.51 km/h) | 57.86 mph (93.12 km/h) |
| 60 mph (96.56 km/h) | 63.12 mph (101.58 km/h) |
| 65 mph (104.61 km/h) | 68.38 mph (110.05 km/h) |
| 70 mph (112.65 km/h) | 73.64 mph (118.51 km/h) |
| 75 mph (120.7 km/h) | 78.9 mph (126.98 km/h) |
| 80 mph (128.75 km/h) | 84.16 mph (135.45 km/h) |
| 85 mph (136.79 km/h) | 89.42 mph (143.91 km/h) |
| 90 mph (144.84 km/h) | 94.68 mph (152.38 km/h) |
| 95 mph (152.89 km/h) | 99.94 mph (160.84 km/h) |
| 100 mph (160.93 km/h) | 105.2 mph (169.31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1653 | 1920 | 2068 | 2159 | 2258 | 2328 | 2405 | 2497 | 2624 | 2750 | 2891 | 3003 | 3207 | 3432 | 3608 | 3721 | 3784 | 4016 | 4340 | 5043 |
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