Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/60-21 | 130/50-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.14 (689.4) | 26.12 (663.4) | -1.02 (-26) -3.8% |
| Width inches (mm) | 5.12 (130) | 5.12 (130) | 0 (0) 0% |
| Circum. inches (mm) | 85.27 (2165.81) | 82.05 (2084.13) | -3.22 (-81.68) -3.8% |
| Sidewall Height inches (mm) | 3.07 (78) | 2.56 (65) | -0.51 (-13) -16.7% |
| Revolutions per mile (km) | 743.07 (461.72) | 772.19 (479.82) | 29.12 (18.1) 3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.25 mph (30.97 km/h) |
| 25 mph (40.23 km/h) | 24.06 mph (38.72 km/h) |
| 30 mph (48.28 km/h) | 28.87 mph (46.46 km/h) |
| 35 mph (56.33 km/h) | 33.68 mph (54.2 km/h) |
| 40 mph (64.37 km/h) | 38.49 mph (61.95 km/h) |
| 45 mph (72.42 km/h) | 43.3 mph (69.69 km/h) |
| 50 mph (80.47 km/h) | 48.11 mph (77.43 km/h) |
| 55 mph (88.51 km/h) | 52.93 mph (85.18 km/h) |
| 60 mph (96.56 km/h) | 57.74 mph (92.92 km/h) |
| 65 mph (104.61 km/h) | 62.55 mph (100.66 km/h) |
| 70 mph (112.65 km/h) | 67.36 mph (108.41 km/h) |
| 75 mph (120.7 km/h) | 72.17 mph (116.15 km/h) |
| 80 mph (128.75 km/h) | 76.98 mph (123.89 km/h) |
| 85 mph (136.79 km/h) | 81.79 mph (131.64 km/h) |
| 90 mph (144.84 km/h) | 86.61 mph (139.38 km/h) |
| 95 mph (152.89 km/h) | 91.42 mph (147.12 km/h) |
| 100 mph (160.93 km/h) | 96.23 mph (154.87 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1965 | 2283 | 2458 | 2567 | 2684 | 2768 | 2860 | 2969 | 3119 | 3270 | 3437 | 3571 | 3813 | 4081 | 4290 | 4424 | 4499 | 4775 | 5159 | 5996 |
Better Fuel Economy Factory Ratios Increased Power
