Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/60-21 | 140/70-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.14 (689.4) | 28.72 (729.4) | 1.57 (40) 5.8% |
| Width inches (mm) | 5.12 (130) | 5.51 (140) | 0.39 (10) 7.7% |
| Circum. inches (mm) | 85.27 (2165.81) | 90.22 (2291.48) | 4.95 (125.66) 5.8% |
| Sidewall Height inches (mm) | 3.07 (78) | 3.86 (98) | 0.79 (20) 25.6% |
| Revolutions per mile (km) | 743.07 (461.72) | 702.32 (436.4) | -40.75 (-25.32) -5.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.16 mph (34.05 km/h) |
| 25 mph (40.23 km/h) | 26.45 mph (42.57 km/h) |
| 30 mph (48.28 km/h) | 31.74 mph (51.08 km/h) |
| 35 mph (56.33 km/h) | 37.03 mph (59.6 km/h) |
| 40 mph (64.37 km/h) | 42.32 mph (68.11 km/h) |
| 45 mph (72.42 km/h) | 47.61 mph (76.62 km/h) |
| 50 mph (80.47 km/h) | 52.9 mph (85.14 km/h) |
| 55 mph (88.51 km/h) | 58.19 mph (93.65 km/h) |
| 60 mph (96.56 km/h) | 63.48 mph (102.16 km/h) |
| 65 mph (104.61 km/h) | 68.77 mph (110.68 km/h) |
| 70 mph (112.65 km/h) | 74.06 mph (119.19 km/h) |
| 75 mph (120.7 km/h) | 79.35 mph (127.7 km/h) |
| 80 mph (128.75 km/h) | 84.64 mph (136.22 km/h) |
| 85 mph (136.79 km/h) | 89.93 mph (144.73 km/h) |
| 90 mph (144.84 km/h) | 95.22 mph (153.25 km/h) |
| 95 mph (152.89 km/h) | 100.51 mph (161.76 km/h) |
| 100 mph (160.93 km/h) | 105.8 mph (170.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1787 | 2076 | 2236 | 2335 | 2441 | 2517 | 2601 | 2700 | 2837 | 2974 | 3126 | 3247 | 3468 | 3711 | 3902 | 4023 | 4092 | 4343 | 4693 | 5453 |
Better Fuel Economy Factory Ratios Increased Power
