Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-18 | 275/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.98 (685.2) | 27.99 (711) | 1.02 (25.8) 3.8% |
| Width inches (mm) | 11.22 (285) | 10.83 (275) | -0.39 (-10) -3.5% |
| Circum. inches (mm) | 84.75 (2152.62) | 87.94 (2233.67) | 3.19 (81.05) 3.8% |
| Sidewall Height inches (mm) | 4.49 (114) | 6.5 (165) | 2.01 (51) 44.7% |
| Revolutions per mile (km) | 747.62 (464.55) | 720.49 (447.69) | -27.13 (-16.86) -3.6% |
275/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.75 mph (33.4 km/h) |
| 25 mph (40.23 km/h) | 25.94 mph (41.75 km/h) |
| 30 mph (48.28 km/h) | 31.13 mph (50.1 km/h) |
| 35 mph (56.33 km/h) | 36.32 mph (58.45 km/h) |
| 40 mph (64.37 km/h) | 41.51 mph (66.8 km/h) |
| 45 mph (72.42 km/h) | 46.69 mph (75.15 km/h) |
| 50 mph (80.47 km/h) | 51.88 mph (83.5 km/h) |
| 55 mph (88.51 km/h) | 57.07 mph (91.85 km/h) |
| 60 mph (96.56 km/h) | 62.26 mph (100.2 km/h) |
| 65 mph (104.61 km/h) | 67.45 mph (108.55 km/h) |
| 70 mph (112.65 km/h) | 72.64 mph (116.9 km/h) |
| 75 mph (120.7 km/h) | 77.82 mph (125.25 km/h) |
| 80 mph (128.75 km/h) | 83.01 mph (133.6 km/h) |
| 85 mph (136.79 km/h) | 88.2 mph (141.95 km/h) |
| 90 mph (144.84 km/h) | 93.39 mph (150.29 km/h) |
| 95 mph (152.89 km/h) | 98.58 mph (158.64 km/h) |
| 100 mph (160.93 km/h) | 103.77 mph (166.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1834 | 2130 | 2294 | 2395 | 2505 | 2583 | 2668 | 2770 | 2910 | 3051 | 3207 | 3332 | 3558 | 3807 | 4003 | 4127 | 4198 | 4455 | 4814 | 5594 |
Better Fuel Economy Factory Ratios Increased Power
