Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 130/60-21 | 180/60-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.14 (689.4) | 24.5 (622.4) | -2.64 (-67) -9.7% |
| Width inches (mm) | 5.12 (130) | 7.09 (180) | 1.97 (50) 38.5% |
| Circum. inches (mm) | 85.27 (2165.81) | 76.98 (1955.33) | -8.29 (-210.49) -9.7% |
| Sidewall Height inches (mm) | 3.07 (78) | 4.25 (108) | 1.18 (30) 38.5% |
| Revolutions per mile (km) | 743.07 (461.72) | 823.06 (511.42) | 79.99 (49.7) 10.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.06 mph (29.06 km/h) |
| 25 mph (40.23 km/h) | 22.57 mph (36.32 km/h) |
| 30 mph (48.28 km/h) | 27.08 mph (43.59 km/h) |
| 35 mph (56.33 km/h) | 31.6 mph (50.85 km/h) |
| 40 mph (64.37 km/h) | 36.11 mph (58.12 km/h) |
| 45 mph (72.42 km/h) | 40.63 mph (65.38 km/h) |
| 50 mph (80.47 km/h) | 45.14 mph (72.65 km/h) |
| 55 mph (88.51 km/h) | 49.65 mph (79.91 km/h) |
| 60 mph (96.56 km/h) | 54.17 mph (87.18 km/h) |
| 65 mph (104.61 km/h) | 58.68 mph (94.44 km/h) |
| 70 mph (112.65 km/h) | 63.2 mph (101.71 km/h) |
| 75 mph (120.7 km/h) | 67.71 mph (108.97 km/h) |
| 80 mph (128.75 km/h) | 72.23 mph (116.24 km/h) |
| 85 mph (136.79 km/h) | 76.74 mph (123.5 km/h) |
| 90 mph (144.84 km/h) | 81.25 mph (130.76 km/h) |
| 95 mph (152.89 km/h) | 85.77 mph (138.03 km/h) |
| 100 mph (160.93 km/h) | 90.28 mph (145.29 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2095 | 2433 | 2620 | 2736 | 2861 | 2950 | 3048 | 3164 | 3324 | 3485 | 3663 | 3806 | 4064 | 4349 | 4572 | 4715 | 4795 | 5089 | 5499 | 6391 |
Better Fuel Economy Factory Ratios Increased Power
