Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-13 | 180/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.34 (618.2) | 24.21 (615) | -0.13 (-3.2) -0.5% |
| Width inches (mm) | 7.09 (180) | 7.09 (180) | 0 (0) 0% |
| Circum. inches (mm) | 76.46 (1942.13) | 76.07 (1932.08) | -0.4 (-10.05) -0.5% |
| Sidewall Height inches (mm) | 5.67 (144) | 4.61 (117) | -1.06 (-27) -18.8% |
| Revolutions per mile (km) | 828.65 (514.9) | 832.96 (517.58) | 4.31 (2.68) 0.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.9 mph (32.02 km/h) |
| 25 mph (40.23 km/h) | 24.87 mph (40.03 km/h) |
| 30 mph (48.28 km/h) | 29.84 mph (48.03 km/h) |
| 35 mph (56.33 km/h) | 34.82 mph (56.04 km/h) |
| 40 mph (64.37 km/h) | 39.79 mph (64.04 km/h) |
| 45 mph (72.42 km/h) | 44.77 mph (72.05 km/h) |
| 50 mph (80.47 km/h) | 49.74 mph (80.05 km/h) |
| 55 mph (88.51 km/h) | 54.72 mph (88.06 km/h) |
| 60 mph (96.56 km/h) | 59.69 mph (96.06 km/h) |
| 65 mph (104.61 km/h) | 64.66 mph (104.07 km/h) |
| 70 mph (112.65 km/h) | 69.64 mph (112.07 km/h) |
| 75 mph (120.7 km/h) | 74.61 mph (120.08 km/h) |
| 80 mph (128.75 km/h) | 79.59 mph (128.08 km/h) |
| 85 mph (136.79 km/h) | 84.56 mph (136.09 km/h) |
| 90 mph (144.84 km/h) | 89.53 mph (144.09 km/h) |
| 95 mph (152.89 km/h) | 94.51 mph (152.1 km/h) |
| 100 mph (160.93 km/h) | 99.48 mph (160.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2120 | 2462 | 2652 | 2769 | 2895 | 2986 | 3085 | 3202 | 3364 | 3527 | 3707 | 3852 | 4113 | 4402 | 4627 | 4772 | 4853 | 5150 | 5565 | 6467 |
Better Fuel Economy Factory Ratios Increased Power
