Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/55-18 | 255/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.04 (737.7) | 31.05 (788.7) | 2.01 (51) 6.9% |
| Width inches (mm) | 10.04 (255) | 10.04 (255) | 0 (0) 0% |
| Circum. inches (mm) | 91.24 (2317.55) | 97.55 (2477.77) | 6.31 (160.22) 6.9% |
| Sidewall Height inches (mm) | 5.52 (140.25) | 6.53 (165.75) | 1 (25.5) 18.2% |
| Revolutions per mile (km) | 694.42 (431.49) | 649.51 (403.59) | -44.9 (-27.9) -6.5% |
255/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.38 mph (34.41 km/h) |
| 25 mph (40.23 km/h) | 26.73 mph (43.02 km/h) |
| 30 mph (48.28 km/h) | 32.07 mph (51.62 km/h) |
| 35 mph (56.33 km/h) | 37.42 mph (60.22 km/h) |
| 40 mph (64.37 km/h) | 42.77 mph (68.82 km/h) |
| 45 mph (72.42 km/h) | 48.11 mph (77.43 km/h) |
| 50 mph (80.47 km/h) | 53.46 mph (86.03 km/h) |
| 55 mph (88.51 km/h) | 58.8 mph (94.63 km/h) |
| 60 mph (96.56 km/h) | 64.15 mph (103.24 km/h) |
| 65 mph (104.61 km/h) | 69.49 mph (111.84 km/h) |
| 70 mph (112.65 km/h) | 74.84 mph (120.44 km/h) |
| 75 mph (120.7 km/h) | 80.19 mph (129.05 km/h) |
| 80 mph (128.75 km/h) | 85.53 mph (137.65 km/h) |
| 85 mph (136.79 km/h) | 90.88 mph (146.25 km/h) |
| 90 mph (144.84 km/h) | 96.22 mph (154.85 km/h) |
| 95 mph (152.89 km/h) | 101.57 mph (163.46 km/h) |
| 100 mph (160.93 km/h) | 106.91 mph (172.06 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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