Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/65-18 | 255/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.56 (801.7) | 32.06 (814.2) | 0.49 (12.5) 1.6% |
| Width inches (mm) | 10.43 (265) | 10.04 (255) | -0.39 (-10) -3.8% |
| Circum. inches (mm) | 99.16 (2518.61) | 100.7 (2557.88) | 1.55 (39.27) 1.6% |
| Sidewall Height inches (mm) | 6.78 (172.25) | 7.03 (178.5) | 0.25 (6.25) 3.6% |
| Revolutions per mile (km) | 638.98 (397.04) | 629.17 (390.95) | -9.81 (-6.1) -1.5% |
255/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.31 mph (32.69 km/h) |
| 25 mph (40.23 km/h) | 25.39 mph (40.86 km/h) |
| 30 mph (48.28 km/h) | 30.47 mph (49.03 km/h) |
| 35 mph (56.33 km/h) | 35.55 mph (57.21 km/h) |
| 40 mph (64.37 km/h) | 40.62 mph (65.38 km/h) |
| 45 mph (72.42 km/h) | 45.7 mph (73.55 km/h) |
| 50 mph (80.47 km/h) | 50.78 mph (81.72 km/h) |
| 55 mph (88.51 km/h) | 55.86 mph (89.89 km/h) |
| 60 mph (96.56 km/h) | 60.94 mph (98.07 km/h) |
| 65 mph (104.61 km/h) | 66.01 mph (106.24 km/h) |
| 70 mph (112.65 km/h) | 71.09 mph (114.41 km/h) |
| 75 mph (120.7 km/h) | 76.17 mph (122.58 km/h) |
| 80 mph (128.75 km/h) | 81.25 mph (130.76 km/h) |
| 85 mph (136.79 km/h) | 86.33 mph (138.93 km/h) |
| 90 mph (144.84 km/h) | 91.4 mph (147.1 km/h) |
| 95 mph (152.89 km/h) | 96.48 mph (155.27 km/h) |
| 100 mph (160.93 km/h) | 101.56 mph (163.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 | 1860 | 2003 | 2092 | 2187 | 2255 | 2330 | 2419 | 2541 | 2664 | 2800 | 2909 | 3107 | 3325 | 3495 | 3604 | 3666 | 3890 | 4204 | 4885 |
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