Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/55-20 | 225/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.18 (766.5) | 30.63 (778) | 0.45 (11.5) 1.5% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 94.8 (2408.03) | 96.23 (2444.16) | 1.42 (36.13) 1.5% |
| Sidewall Height inches (mm) | 5.09 (129.25) | 5.31 (135) | 0.23 (5.75) 4.4% |
| Revolutions per mile (km) | 668.32 (415.28) | 658.44 (409.14) | -9.88 (-6.14) -1.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.3 mph (32.67 km/h) |
| 25 mph (40.23 km/h) | 25.38 mph (40.84 km/h) |
| 30 mph (48.28 km/h) | 30.45 mph (49 km/h) |
| 35 mph (56.33 km/h) | 35.53 mph (57.17 km/h) |
| 40 mph (64.37 km/h) | 40.6 mph (65.34 km/h) |
| 45 mph (72.42 km/h) | 45.68 mph (73.51 km/h) |
| 50 mph (80.47 km/h) | 50.75 mph (81.67 km/h) |
| 55 mph (88.51 km/h) | 55.83 mph (89.84 km/h) |
| 60 mph (96.56 km/h) | 60.9 mph (98.01 km/h) |
| 65 mph (104.61 km/h) | 65.98 mph (106.18 km/h) |
| 70 mph (112.65 km/h) | 71.05 mph (114.34 km/h) |
| 75 mph (120.7 km/h) | 76.13 mph (122.51 km/h) |
| 80 mph (128.75 km/h) | 81.2 mph (130.68 km/h) |
| 85 mph (136.79 km/h) | 86.28 mph (138.85 km/h) |
| 90 mph (144.84 km/h) | 91.35 mph (147.01 km/h) |
| 95 mph (152.89 km/h) | 96.43 mph (155.18 km/h) |
| 100 mph (160.93 km/h) | 101.5 mph (163.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1676 | 1947 | 2096 | 2189 | 2289 | 2360 | 2439 | 2531 | 2660 | 2788 | 2931 | 3045 | 3251 | 3480 | 3658 | 3772 | 3836 | 4071 | 4399 | 5112 |
Better Fuel Economy Factory Ratios Increased Power
