Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/30-21 | 245/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.5 (698.4) | 27.75 (704.9) | 0.26 (6.5) 0.9% |
| Width inches (mm) | 10.83 (275) | 9.65 (245) | -1.18 (-30) -10.9% |
| Circum. inches (mm) | 86.38 (2194.09) | 87.19 (2214.51) | 0.8 (20.42) 0.9% |
| Sidewall Height inches (mm) | 3.25 (82.5) | 3.38 (85.75) | 0.13 (3.25) 3.9% |
| Revolutions per mile (km) | 733.49 (455.77) | 726.73 (451.57) | -6.76 (-4.2) -0.9% |
245/35-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.49 km/h) |
| 25 mph (40.23 km/h) | 25.23 mph (40.61 km/h) |
| 30 mph (48.28 km/h) | 30.28 mph (48.73 km/h) |
| 35 mph (56.33 km/h) | 35.33 mph (56.85 km/h) |
| 40 mph (64.37 km/h) | 40.37 mph (64.97 km/h) |
| 45 mph (72.42 km/h) | 45.42 mph (73.09 km/h) |
| 50 mph (80.47 km/h) | 50.47 mph (81.22 km/h) |
| 55 mph (88.51 km/h) | 55.51 mph (89.34 km/h) |
| 60 mph (96.56 km/h) | 60.56 mph (97.46 km/h) |
| 65 mph (104.61 km/h) | 65.6 mph (105.58 km/h) |
| 70 mph (112.65 km/h) | 70.65 mph (113.7 km/h) |
| 75 mph (120.7 km/h) | 75.7 mph (121.82 km/h) |
| 80 mph (128.75 km/h) | 80.74 mph (129.95 km/h) |
| 85 mph (136.79 km/h) | 85.79 mph (138.07 km/h) |
| 90 mph (144.84 km/h) | 90.84 mph (146.19 km/h) |
| 95 mph (152.89 km/h) | 95.88 mph (154.31 km/h) |
| 100 mph (160.93 km/h) | 100.93 mph (162.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1849 | 2148 | 2314 | 2416 | 2526 | 2605 | 2691 | 2794 | 2935 | 3077 | 3234 | 3360 | 3589 | 3840 | 4037 | 4163 | 4234 | 4494 | 4856 | 5643 |
Better Fuel Economy Factory Ratios Increased Power
