Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/85-18 | 265/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.07 (941.7) | 31.56 (801.7) | -5.51 (-140) -14.9% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 116.47 (2958.44) | 99.16 (2518.61) | -17.32 (-439.82) -14.9% |
| Sidewall Height inches (mm) | 9.54 (242.25) | 6.78 (172.25) | -2.76 (-70) -28.9% |
| Revolutions per mile (km) | 543.98 (338.02) | 638.98 (397.04) | 95 (59.03) 17.5% |
265/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.03 mph (27.4 km/h) |
| 25 mph (40.23 km/h) | 21.28 mph (34.25 km/h) |
| 30 mph (48.28 km/h) | 25.54 mph (41.1 km/h) |
| 35 mph (56.33 km/h) | 29.8 mph (47.95 km/h) |
| 40 mph (64.37 km/h) | 34.05 mph (54.8 km/h) |
| 45 mph (72.42 km/h) | 38.31 mph (61.65 km/h) |
| 50 mph (80.47 km/h) | 42.57 mph (68.5 km/h) |
| 55 mph (88.51 km/h) | 46.82 mph (75.35 km/h) |
| 60 mph (96.56 km/h) | 51.08 mph (82.21 km/h) |
| 65 mph (104.61 km/h) | 55.34 mph (89.06 km/h) |
| 70 mph (112.65 km/h) | 59.59 mph (95.91 km/h) |
| 75 mph (120.7 km/h) | 63.85 mph (102.76 km/h) |
| 80 mph (128.75 km/h) | 68.11 mph (109.61 km/h) |
| 85 mph (136.79 km/h) | 72.36 mph (116.46 km/h) |
| 90 mph (144.84 km/h) | 76.62 mph (123.31 km/h) |
| 95 mph (152.89 km/h) | 80.88 mph (130.16 km/h) |
| 100 mph (160.93 km/h) | 85.13 mph (137.01 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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