Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 265/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 32.61 (828.2) | -4.83 (-122.8) -12.9% |
| Width inches (mm) | 12.4 (315) | 10.43 (265) | -1.97 (-50) -15.9% |
| Circum. inches (mm) | 117.62 (2987.65) | 102.44 (2601.87) | -15.19 (-385.79) -12.9% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 7.3 (185.5) | 3.58 (91) 96.3% |
| Revolutions per mile (km) | 538.66 (334.71) | 618.53 (384.34) | 79.87 (49.63) 14.8% |
265/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.42 mph (28.03 km/h) |
| 25 mph (40.23 km/h) | 21.77 mph (35.04 km/h) |
| 30 mph (48.28 km/h) | 26.13 mph (42.05 km/h) |
| 35 mph (56.33 km/h) | 30.48 mph (49.05 km/h) |
| 40 mph (64.37 km/h) | 34.83 mph (56.06 km/h) |
| 45 mph (72.42 km/h) | 39.19 mph (63.07 km/h) |
| 50 mph (80.47 km/h) | 43.54 mph (70.08 km/h) |
| 55 mph (88.51 km/h) | 47.9 mph (77.08 km/h) |
| 60 mph (96.56 km/h) | 52.25 mph (84.09 km/h) |
| 65 mph (104.61 km/h) | 56.61 mph (91.1 km/h) |
| 70 mph (112.65 km/h) | 60.96 mph (98.11 km/h) |
| 75 mph (120.7 km/h) | 65.32 mph (105.12 km/h) |
| 80 mph (128.75 km/h) | 69.67 mph (112.12 km/h) |
| 85 mph (136.79 km/h) | 74.02 mph (119.13 km/h) |
| 90 mph (144.84 km/h) | 78.38 mph (126.14 km/h) |
| 95 mph (152.89 km/h) | 82.73 mph (133.15 km/h) |
| 100 mph (160.93 km/h) | 87.09 mph (140.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1574 | 1829 | 1969 | 2056 | 2150 | 2217 | 2291 | 2378 | 2498 | 2619 | 2753 | 2860 | 3054 | 3269 | 3436 | 3543 | 3604 | 3825 | 4133 | 4803 |
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