Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/35-21 | 275/45-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.13 (739.9) | 30.74 (780.9) | 1.61 (41) 5.5% |
| Width inches (mm) | 11.61 (295) | 10.83 (275) | -0.79 (-20) -6.8% |
| Circum. inches (mm) | 91.51 (2324.46) | 96.59 (2453.27) | 5.07 (128.81) 5.5% |
| Sidewall Height inches (mm) | 4.06 (103.25) | 4.87 (123.75) | 0.81 (20.5) 19.9% |
| Revolutions per mile (km) | 692.35 (430.21) | 656 (407.62) | -36.35 (-22.59) -5.3% |
275/45-21 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.11 mph (33.97 km/h) |
| 25 mph (40.23 km/h) | 26.39 mph (42.46 km/h) |
| 30 mph (48.28 km/h) | 31.66 mph (50.96 km/h) |
| 35 mph (56.33 km/h) | 36.94 mph (59.45 km/h) |
| 40 mph (64.37 km/h) | 42.22 mph (67.94 km/h) |
| 45 mph (72.42 km/h) | 47.49 mph (76.43 km/h) |
| 50 mph (80.47 km/h) | 52.77 mph (84.93 km/h) |
| 55 mph (88.51 km/h) | 58.05 mph (93.42 km/h) |
| 60 mph (96.56 km/h) | 63.32 mph (101.91 km/h) |
| 65 mph (104.61 km/h) | 68.6 mph (110.4 km/h) |
| 70 mph (112.65 km/h) | 73.88 mph (118.9 km/h) |
| 75 mph (120.7 km/h) | 79.16 mph (127.39 km/h) |
| 80 mph (128.75 km/h) | 84.43 mph (135.88 km/h) |
| 85 mph (136.79 km/h) | 89.71 mph (144.37 km/h) |
| 90 mph (144.84 km/h) | 94.99 mph (152.87 km/h) |
| 95 mph (152.89 km/h) | 100.26 mph (161.36 km/h) |
| 100 mph (160.93 km/h) | 105.54 mph (169.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1669 | 1939 | 2089 | 2181 | 2280 | 2351 | 2430 | 2522 | 2650 | 2778 | 2920 | 3033 | 3239 | 3467 | 3644 | 3758 | 3822 | 4056 | 4383 | 5093 |
Better Fuel Economy Factory Ratios Increased Power
