Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/60-18 | 255/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.57 (751.2) | 31.05 (788.7) | 1.48 (37.5) 5% |
| Width inches (mm) | 9.65 (245) | 10.04 (255) | 0.39 (10) 4.1% |
| Circum. inches (mm) | 92.91 (2359.96) | 97.55 (2477.77) | 4.64 (117.81) 5% |
| Sidewall Height inches (mm) | 5.79 (147) | 6.53 (165.75) | 0.74 (18.75) 12.8% |
| Revolutions per mile (km) | 681.94 (423.73) | 649.51 (403.59) | -32.42 (-20.15) -4.8% |
255/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21 mph (33.79 km/h) |
| 25 mph (40.23 km/h) | 26.25 mph (42.24 km/h) |
| 30 mph (48.28 km/h) | 31.5 mph (50.69 km/h) |
| 35 mph (56.33 km/h) | 36.75 mph (59.14 km/h) |
| 40 mph (64.37 km/h) | 42 mph (67.59 km/h) |
| 45 mph (72.42 km/h) | 47.25 mph (76.04 km/h) |
| 50 mph (80.47 km/h) | 52.5 mph (84.48 km/h) |
| 55 mph (88.51 km/h) | 57.75 mph (92.93 km/h) |
| 60 mph (96.56 km/h) | 63 mph (101.38 km/h) |
| 65 mph (104.61 km/h) | 68.24 mph (109.83 km/h) |
| 70 mph (112.65 km/h) | 73.49 mph (118.28 km/h) |
| 75 mph (120.7 km/h) | 78.74 mph (126.73 km/h) |
| 80 mph (128.75 km/h) | 83.99 mph (135.17 km/h) |
| 85 mph (136.79 km/h) | 89.24 mph (143.62 km/h) |
| 90 mph (144.84 km/h) | 94.49 mph (152.07 km/h) |
| 95 mph (152.89 km/h) | 99.74 mph (160.52 km/h) |
| 100 mph (160.93 km/h) | 104.99 mph (168.97 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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