Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/50-18 | 265/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.22 (742.2) | 31.56 (801.7) | 2.34 (59.5) 8% |
| Width inches (mm) | 11.22 (285) | 10.43 (265) | -0.79 (-20) -7% |
| Circum. inches (mm) | 91.8 (2331.69) | 99.16 (2518.61) | 7.36 (186.92) 8% |
| Sidewall Height inches (mm) | 5.61 (142.5) | 6.78 (172.25) | 1.17 (29.75) 20.9% |
| Revolutions per mile (km) | 690.2 (428.87) | 638.98 (397.04) | -51.23 (-31.83) -7.4% |
265/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.6 mph (34.77 km/h) |
| 25 mph (40.23 km/h) | 27 mph (43.46 km/h) |
| 30 mph (48.28 km/h) | 32.41 mph (52.15 km/h) |
| 35 mph (56.33 km/h) | 37.81 mph (60.84 km/h) |
| 40 mph (64.37 km/h) | 43.21 mph (69.53 km/h) |
| 45 mph (72.42 km/h) | 48.61 mph (78.23 km/h) |
| 50 mph (80.47 km/h) | 54.01 mph (86.92 km/h) |
| 55 mph (88.51 km/h) | 59.41 mph (95.61 km/h) |
| 60 mph (96.56 km/h) | 64.81 mph (104.3 km/h) |
| 65 mph (104.61 km/h) | 70.21 mph (112.99 km/h) |
| 70 mph (112.65 km/h) | 75.61 mph (121.69 km/h) |
| 75 mph (120.7 km/h) | 81.01 mph (130.38 km/h) |
| 80 mph (128.75 km/h) | 86.41 mph (139.07 km/h) |
| 85 mph (136.79 km/h) | 91.81 mph (147.76 km/h) |
| 90 mph (144.84 km/h) | 97.22 mph (156.45 km/h) |
| 95 mph (152.89 km/h) | 102.62 mph (165.14 km/h) |
| 100 mph (160.93 km/h) | 108.02 mph (173.84 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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