Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/40-18 | 275/60-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.66 (677.2) | 27.99 (711) | 1.33 (33.8) 5% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 83.76 (2127.49) | 87.94 (2233.67) | 4.18 (106.19) 5% |
| Sidewall Height inches (mm) | 4.33 (110) | 6.5 (165) | 2.17 (55) 50% |
| Revolutions per mile (km) | 756.45 (470.04) | 720.49 (447.69) | -35.96 (-22.34) -4.8% |
275/60-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21 mph (33.79 km/h) |
| 25 mph (40.23 km/h) | 26.25 mph (42.24 km/h) |
| 30 mph (48.28 km/h) | 31.5 mph (50.69 km/h) |
| 35 mph (56.33 km/h) | 36.75 mph (59.14 km/h) |
| 40 mph (64.37 km/h) | 42 mph (67.59 km/h) |
| 45 mph (72.42 km/h) | 47.25 mph (76.04 km/h) |
| 50 mph (80.47 km/h) | 52.5 mph (84.48 km/h) |
| 55 mph (88.51 km/h) | 57.75 mph (92.93 km/h) |
| 60 mph (96.56 km/h) | 62.99 mph (101.38 km/h) |
| 65 mph (104.61 km/h) | 68.24 mph (109.83 km/h) |
| 70 mph (112.65 km/h) | 73.49 mph (118.28 km/h) |
| 75 mph (120.7 km/h) | 78.74 mph (126.73 km/h) |
| 80 mph (128.75 km/h) | 83.99 mph (135.17 km/h) |
| 85 mph (136.79 km/h) | 89.24 mph (143.62 km/h) |
| 90 mph (144.84 km/h) | 94.49 mph (152.07 km/h) |
| 95 mph (152.89 km/h) | 99.74 mph (160.52 km/h) |
| 100 mph (160.93 km/h) | 104.99 mph (168.97 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
