Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/50-18 | 275/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.22 (742.2) | 30.99 (787.2) | 1.77 (45) 6.1% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 91.8 (2331.69) | 97.36 (2473.06) | 5.57 (141.37) 6.1% |
| Sidewall Height inches (mm) | 5.61 (142.5) | 6.5 (165) | 0.89 (22.5) 15.8% |
| Revolutions per mile (km) | 690.2 (428.87) | 650.75 (404.36) | -39.46 (-24.52) -5.7% |
275/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.21 mph (34.14 km/h) |
| 25 mph (40.23 km/h) | 26.52 mph (42.67 km/h) |
| 30 mph (48.28 km/h) | 31.82 mph (51.21 km/h) |
| 35 mph (56.33 km/h) | 37.12 mph (59.74 km/h) |
| 40 mph (64.37 km/h) | 42.43 mph (68.28 km/h) |
| 45 mph (72.42 km/h) | 47.73 mph (76.81 km/h) |
| 50 mph (80.47 km/h) | 53.03 mph (85.35 km/h) |
| 55 mph (88.51 km/h) | 58.33 mph (93.88 km/h) |
| 60 mph (96.56 km/h) | 63.64 mph (102.42 km/h) |
| 65 mph (104.61 km/h) | 68.94 mph (110.95 km/h) |
| 70 mph (112.65 km/h) | 74.24 mph (119.48 km/h) |
| 75 mph (120.7 km/h) | 79.55 mph (128.02 km/h) |
| 80 mph (128.75 km/h) | 84.85 mph (136.55 km/h) |
| 85 mph (136.79 km/h) | 90.15 mph (145.09 km/h) |
| 90 mph (144.84 km/h) | 95.46 mph (153.62 km/h) |
| 95 mph (152.89 km/h) | 100.76 mph (162.16 km/h) |
| 100 mph (160.93 km/h) | 106.06 mph (170.69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1656 | 1924 | 2072 | 2163 | 2262 | 2333 | 2410 | 2502 | 2629 | 2755 | 2896 | 3009 | 3213 | 3439 | 3615 | 3728 | 3791 | 4024 | 4348 | 5053 |
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