Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/90-15 | 170/90-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.21 (615) | 27.05 (687) | 2.83 (72) 11.7% |
| Width inches (mm) | 5.12 (130) | 6.69 (170) | 1.57 (40) 30.8% |
| Circum. inches (mm) | 76.07 (1932.08) | 84.97 (2158.27) | 8.91 (226.19) 11.7% |
| Sidewall Height inches (mm) | 4.61 (117) | 6.02 (153) | 1.42 (36) 30.8% |
| Revolutions per mile (km) | 832.96 (517.58) | 745.66 (463.33) | -87.3 (-54.24) -10.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.34 mph (35.96 km/h) |
| 25 mph (40.23 km/h) | 27.93 mph (44.94 km/h) |
| 30 mph (48.28 km/h) | 33.51 mph (53.93 km/h) |
| 35 mph (56.33 km/h) | 39.1 mph (62.92 km/h) |
| 40 mph (64.37 km/h) | 44.68 mph (71.91 km/h) |
| 45 mph (72.42 km/h) | 50.27 mph (80.9 km/h) |
| 50 mph (80.47 km/h) | 55.85 mph (89.89 km/h) |
| 55 mph (88.51 km/h) | 61.44 mph (98.88 km/h) |
| 60 mph (96.56 km/h) | 67.02 mph (107.87 km/h) |
| 65 mph (104.61 km/h) | 72.61 mph (116.85 km/h) |
| 70 mph (112.65 km/h) | 78.2 mph (125.84 km/h) |
| 75 mph (120.7 km/h) | 83.78 mph (134.83 km/h) |
| 80 mph (128.75 km/h) | 89.37 mph (143.82 km/h) |
| 85 mph (136.79 km/h) | 94.95 mph (152.81 km/h) |
| 90 mph (144.84 km/h) | 100.54 mph (161.8 km/h) |
| 95 mph (152.89 km/h) | 106.12 mph (170.79 km/h) |
| 100 mph (160.93 km/h) | 111.71 mph (179.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1898 | 2204 | 2374 | 2479 | 2592 | 2673 | 2762 | 2867 | 3012 | 3157 | 3319 | 3448 | 3682 | 3940 | 4142 | 4272 | 4344 | 4611 | 4982 | 5790 |
Better Fuel Economy Factory Ratios Increased Power
