Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/60-21 | 130/70-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.14 (689.4) | 28.17 (715.4) | 1.02 (26) 3.8% |
| Width inches (mm) | 5.12 (130) | 5.12 (130) | 0 (0) 0% |
| Circum. inches (mm) | 85.27 (2165.81) | 88.48 (2247.5) | 3.22 (81.68) 3.8% |
| Sidewall Height inches (mm) | 3.07 (78) | 3.58 (91) | 0.51 (13) 16.7% |
| Revolutions per mile (km) | 743.07 (461.72) | 716.06 (444.94) | -27.01 (-16.78) -3.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.75 mph (33.4 km/h) |
| 25 mph (40.23 km/h) | 25.94 mph (41.75 km/h) |
| 30 mph (48.28 km/h) | 31.13 mph (50.1 km/h) |
| 35 mph (56.33 km/h) | 36.32 mph (58.45 km/h) |
| 40 mph (64.37 km/h) | 41.51 mph (66.8 km/h) |
| 45 mph (72.42 km/h) | 46.7 mph (75.15 km/h) |
| 50 mph (80.47 km/h) | 51.89 mph (83.5 km/h) |
| 55 mph (88.51 km/h) | 57.07 mph (91.85 km/h) |
| 60 mph (96.56 km/h) | 62.26 mph (100.2 km/h) |
| 65 mph (104.61 km/h) | 67.45 mph (108.55 km/h) |
| 70 mph (112.65 km/h) | 72.64 mph (116.9 km/h) |
| 75 mph (120.7 km/h) | 77.83 mph (125.25 km/h) |
| 80 mph (128.75 km/h) | 83.02 mph (133.6 km/h) |
| 85 mph (136.79 km/h) | 88.21 mph (141.95 km/h) |
| 90 mph (144.84 km/h) | 93.39 mph (150.3 km/h) |
| 95 mph (152.89 km/h) | 98.58 mph (158.65 km/h) |
| 100 mph (160.93 km/h) | 103.77 mph (167 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1822 | 2117 | 2280 | 2381 | 2489 | 2567 | 2652 | 2753 | 2892 | 3032 | 3187 | 3311 | 3536 | 3784 | 3978 | 4102 | 4172 | 4428 | 4784 | 5560 |
Better Fuel Economy Factory Ratios Increased Power
