Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/70-21 | 130/60-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.61 (701.4) | 25.14 (638.6) | -2.47 (-62.8) -9% |
| Width inches (mm) | 4.72 (120) | 5.12 (130) | 0.39 (10) 8.3% |
| Circum. inches (mm) | 86.75 (2203.51) | 78.99 (2006.22) | -7.77 (-197.29) -9% |
| Sidewall Height inches (mm) | 3.31 (84) | 3.07 (78) | -0.24 (-6) -7.1% |
| Revolutions per mile (km) | 730.35 (453.82) | 802.18 (498.45) | 71.82 (44.63) 9.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.21 mph (29.31 km/h) |
| 25 mph (40.23 km/h) | 22.76 mph (36.63 km/h) |
| 30 mph (48.28 km/h) | 27.31 mph (43.96 km/h) |
| 35 mph (56.33 km/h) | 31.87 mph (51.28 km/h) |
| 40 mph (64.37 km/h) | 36.42 mph (58.61 km/h) |
| 45 mph (72.42 km/h) | 40.97 mph (65.94 km/h) |
| 50 mph (80.47 km/h) | 45.52 mph (73.26 km/h) |
| 55 mph (88.51 km/h) | 50.08 mph (80.59 km/h) |
| 60 mph (96.56 km/h) | 54.63 mph (87.92 km/h) |
| 65 mph (104.61 km/h) | 59.18 mph (95.24 km/h) |
| 70 mph (112.65 km/h) | 63.73 mph (102.57 km/h) |
| 75 mph (120.7 km/h) | 68.28 mph (109.89 km/h) |
| 80 mph (128.75 km/h) | 72.84 mph (117.22 km/h) |
| 85 mph (136.79 km/h) | 77.39 mph (124.55 km/h) |
| 90 mph (144.84 km/h) | 81.94 mph (131.87 km/h) |
| 95 mph (152.89 km/h) | 86.49 mph (139.2 km/h) |
| 100 mph (160.93 km/h) | 91.05 mph (146.53 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2041 | 2371 | 2554 | 2667 | 2788 | 2875 | 2971 | 3084 | 3240 | 3397 | 3570 | 3709 | 3961 | 4239 | 4456 | 4595 | 4673 | 4960 | 5360 | 6228 |
Better Fuel Economy Factory Ratios Increased Power
