Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-15 | 275/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.32 (821) | 29.07 (738.5) | -3.25 (-82.5) -10% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 101.55 (2579.25) | 91.34 (2320.07) | -10.2 (-259.18) -10% |
| Sidewall Height inches (mm) | 8.66 (220) | 7.04 (178.75) | -1.62 (-41.25) -18.8% |
| Revolutions per mile (km) | 623.96 (387.71) | 693.66 (431.02) | 69.7 (43.31) 11.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.99 mph (28.95 km/h) |
| 25 mph (40.23 km/h) | 22.49 mph (36.19 km/h) |
| 30 mph (48.28 km/h) | 26.99 mph (43.43 km/h) |
| 35 mph (56.33 km/h) | 31.48 mph (50.67 km/h) |
| 40 mph (64.37 km/h) | 35.98 mph (57.91 km/h) |
| 45 mph (72.42 km/h) | 40.48 mph (65.14 km/h) |
| 50 mph (80.47 km/h) | 44.98 mph (72.38 km/h) |
| 55 mph (88.51 km/h) | 49.47 mph (79.62 km/h) |
| 60 mph (96.56 km/h) | 53.97 mph (86.86 km/h) |
| 65 mph (104.61 km/h) | 58.47 mph (94.1 km/h) |
| 70 mph (112.65 km/h) | 62.97 mph (101.33 km/h) |
| 75 mph (120.7 km/h) | 67.46 mph (108.57 km/h) |
| 80 mph (128.75 km/h) | 71.96 mph (115.81 km/h) |
| 85 mph (136.79 km/h) | 76.46 mph (123.05 km/h) |
| 90 mph (144.84 km/h) | 80.96 mph (130.29 km/h) |
| 95 mph (152.89 km/h) | 85.45 mph (137.52 km/h) |
| 100 mph (160.93 km/h) | 89.95 mph (144.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1765 | 2051 | 2208 | 2306 | 2411 | 2486 | 2569 | 2667 | 2802 | 2937 | 3087 | 3207 | 3425 | 3666 | 3853 | 3974 | 4041 | 4289 | 4635 | 5386 |
Better Fuel Economy Factory Ratios Increased Power
