Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/80-15 | 130/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.71 (653) | 24.21 (615) | -1.5 (-38) -5.8% |
| Width inches (mm) | 6.69 (170) | 5.12 (130) | -1.57 (-40) -23.5% |
| Circum. inches (mm) | 80.77 (2051.46) | 76.07 (1932.08) | -4.7 (-119.38) -5.8% |
| Sidewall Height inches (mm) | 5.35 (136) | 4.61 (117) | -0.75 (-19) -14% |
| Revolutions per mile (km) | 784.49 (487.46) | 832.96 (517.58) | 48.47 (30.12) 6.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.84 mph (30.31 km/h) |
| 25 mph (40.23 km/h) | 23.55 mph (37.89 km/h) |
| 30 mph (48.28 km/h) | 28.25 mph (45.47 km/h) |
| 35 mph (56.33 km/h) | 32.96 mph (53.05 km/h) |
| 40 mph (64.37 km/h) | 37.67 mph (60.63 km/h) |
| 45 mph (72.42 km/h) | 42.38 mph (68.21 km/h) |
| 50 mph (80.47 km/h) | 47.09 mph (75.78 km/h) |
| 55 mph (88.51 km/h) | 51.8 mph (83.36 km/h) |
| 60 mph (96.56 km/h) | 56.51 mph (90.94 km/h) |
| 65 mph (104.61 km/h) | 61.22 mph (98.52 km/h) |
| 70 mph (112.65 km/h) | 65.93 mph (106.1 km/h) |
| 75 mph (120.7 km/h) | 70.64 mph (113.68 km/h) |
| 80 mph (128.75 km/h) | 75.34 mph (121.26 km/h) |
| 85 mph (136.79 km/h) | 80.05 mph (128.83 km/h) |
| 90 mph (144.84 km/h) | 84.76 mph (136.41 km/h) |
| 95 mph (152.89 km/h) | 89.47 mph (143.99 km/h) |
| 100 mph (160.93 km/h) | 94.18 mph (151.57 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
