Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/60-21 | 120/70-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.14 (689.4) | 29.61 (752.2) | 2.47 (62.8) 9.1% |
| Width inches (mm) | 5.12 (130) | 4.72 (120) | -0.39 (-10) -7.7% |
| Circum. inches (mm) | 85.27 (2165.81) | 93.04 (2363.11) | 7.77 (197.29) 9.1% |
| Sidewall Height inches (mm) | 3.07 (78) | 3.31 (84) | 0.24 (6) 7.7% |
| Revolutions per mile (km) | 743.07 (461.72) | 681.03 (423.17) | -62.04 (-38.55) -8.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.82 mph (35.12 km/h) |
| 25 mph (40.23 km/h) | 27.28 mph (43.9 km/h) |
| 30 mph (48.28 km/h) | 32.73 mph (52.68 km/h) |
| 35 mph (56.33 km/h) | 38.19 mph (61.46 km/h) |
| 40 mph (64.37 km/h) | 43.64 mph (70.24 km/h) |
| 45 mph (72.42 km/h) | 49.1 mph (79.02 km/h) |
| 50 mph (80.47 km/h) | 54.55 mph (87.8 km/h) |
| 55 mph (88.51 km/h) | 60.01 mph (96.58 km/h) |
| 60 mph (96.56 km/h) | 65.47 mph (105.36 km/h) |
| 65 mph (104.61 km/h) | 70.92 mph (114.14 km/h) |
| 70 mph (112.65 km/h) | 76.38 mph (122.92 km/h) |
| 75 mph (120.7 km/h) | 81.83 mph (131.7 km/h) |
| 80 mph (128.75 km/h) | 87.29 mph (140.48 km/h) |
| 85 mph (136.79 km/h) | 92.74 mph (149.26 km/h) |
| 90 mph (144.84 km/h) | 98.2 mph (158.04 km/h) |
| 95 mph (152.89 km/h) | 103.65 mph (166.82 km/h) |
| 100 mph (160.93 km/h) | 109.11 mph (175.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1733 | 2013 | 2168 | 2264 | 2367 | 2441 | 2522 | 2618 | 2751 | 2884 | 3031 | 3149 | 3363 | 3599 | 3783 | 3901 | 3968 | 4211 | 4550 | 5288 |
Better Fuel Economy Factory Ratios Increased Power
