Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/55-20 | 225/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.04 (788.5) | 26.2 (665.5) | -4.84 (-123) -15.6% |
| Width inches (mm) | 10.04 (255) | 8.86 (225) | -1.18 (-30) -11.8% |
| Circum. inches (mm) | 97.53 (2477.15) | 82.31 (2090.73) | -15.21 (-386.42) -15.6% |
| Sidewall Height inches (mm) | 5.52 (140.25) | 3.1 (78.75) | -2.42 (-61.5) -43.9% |
| Revolutions per mile (km) | 649.68 (403.69) | 769.75 (478.3) | 120.08 (74.61) 18.5% |
225/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.88 mph (27.17 km/h) |
| 25 mph (40.23 km/h) | 21.1 mph (33.96 km/h) |
| 30 mph (48.28 km/h) | 25.32 mph (40.75 km/h) |
| 35 mph (56.33 km/h) | 29.54 mph (47.54 km/h) |
| 40 mph (64.37 km/h) | 33.76 mph (54.33 km/h) |
| 45 mph (72.42 km/h) | 37.98 mph (61.12 km/h) |
| 50 mph (80.47 km/h) | 42.2 mph (67.92 km/h) |
| 55 mph (88.51 km/h) | 46.42 mph (74.71 km/h) |
| 60 mph (96.56 km/h) | 50.64 mph (81.5 km/h) |
| 65 mph (104.61 km/h) | 54.86 mph (88.29 km/h) |
| 70 mph (112.65 km/h) | 59.08 mph (95.08 km/h) |
| 75 mph (120.7 km/h) | 63.3 mph (101.87 km/h) |
| 80 mph (128.75 km/h) | 67.52 mph (108.66 km/h) |
| 85 mph (136.79 km/h) | 71.74 mph (115.46 km/h) |
| 90 mph (144.84 km/h) | 75.96 mph (122.25 km/h) |
| 95 mph (152.89 km/h) | 80.18 mph (129.04 km/h) |
| 100 mph (160.93 km/h) | 84.4 mph (135.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1959 | 2276 | 2451 | 2559 | 2676 | 2759 | 2851 | 2959 | 3109 | 3259 | 3426 | 3559 | 3801 | 4068 | 4276 | 4410 | 4485 | 4760 | 5143 | 5977 |
Better Fuel Economy Factory Ratios Increased Power
