Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 265/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 31.56 (801.7) | -5.88 (-149.3) -15.7% |
| Width inches (mm) | 12.4 (315) | 10.43 (265) | -1.97 (-50) -15.9% |
| Circum. inches (mm) | 117.62 (2987.65) | 99.16 (2518.61) | -18.47 (-469.04) -15.7% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 6.78 (172.25) | 3.06 (77.75) 82.3% |
| Revolutions per mile (km) | 538.66 (334.71) | 638.98 (397.04) | 100.32 (62.33) 18.6% |
265/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.86 mph (27.13 km/h) |
| 25 mph (40.23 km/h) | 21.08 mph (33.92 km/h) |
| 30 mph (48.28 km/h) | 25.29 mph (40.7 km/h) |
| 35 mph (56.33 km/h) | 29.51 mph (47.48 km/h) |
| 40 mph (64.37 km/h) | 33.72 mph (54.27 km/h) |
| 45 mph (72.42 km/h) | 37.94 mph (61.05 km/h) |
| 50 mph (80.47 km/h) | 42.15 mph (67.83 km/h) |
| 55 mph (88.51 km/h) | 46.37 mph (74.62 km/h) |
| 60 mph (96.56 km/h) | 50.58 mph (81.4 km/h) |
| 65 mph (104.61 km/h) | 54.8 mph (88.18 km/h) |
| 70 mph (112.65 km/h) | 59.01 mph (94.97 km/h) |
| 75 mph (120.7 km/h) | 63.23 mph (101.75 km/h) |
| 80 mph (128.75 km/h) | 67.44 mph (108.54 km/h) |
| 85 mph (136.79 km/h) | 71.66 mph (115.32 km/h) |
| 90 mph (144.84 km/h) | 75.87 mph (122.1 km/h) |
| 95 mph (152.89 km/h) | 80.09 mph (128.89 km/h) |
| 100 mph (160.93 km/h) | 84.3 mph (135.67 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1626 | 1889 | 2034 | 2124 | 2221 | 2290 | 2366 | 2456 | 2581 | 2706 | 2844 | 2955 | 3155 | 3377 | 3550 | 3660 | 3723 | 3951 | 4269 | 4961 |
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