Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/30-21 | 255/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.97 (710.4) | 28.03 (711.9) | 0.06 (1.5) 0.2% |
| Width inches (mm) | 11.61 (295) | 10.04 (255) | -1.57 (-40) -13.6% |
| Circum. inches (mm) | 87.87 (2231.79) | 88.05 (2236.5) | 0.19 (4.71) 0.2% |
| Sidewall Height inches (mm) | 3.48 (88.5) | 3.51 (89.25) | 0.03 (0.75) 0.8% |
| Revolutions per mile (km) | 721.1 (448.07) | 719.58 (447.13) | -1.52 (-0.94) -0.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.04 mph (32.25 km/h) |
| 25 mph (40.23 km/h) | 25.05 mph (40.32 km/h) |
| 30 mph (48.28 km/h) | 30.06 mph (48.38 km/h) |
| 35 mph (56.33 km/h) | 35.07 mph (56.45 km/h) |
| 40 mph (64.37 km/h) | 40.08 mph (64.51 km/h) |
| 45 mph (72.42 km/h) | 45.1 mph (72.57 km/h) |
| 50 mph (80.47 km/h) | 50.11 mph (80.64 km/h) |
| 55 mph (88.51 km/h) | 55.12 mph (88.7 km/h) |
| 60 mph (96.56 km/h) | 60.13 mph (96.76 km/h) |
| 65 mph (104.61 km/h) | 65.14 mph (104.83 km/h) |
| 70 mph (112.65 km/h) | 70.15 mph (112.89 km/h) |
| 75 mph (120.7 km/h) | 75.16 mph (120.96 km/h) |
| 80 mph (128.75 km/h) | 80.17 mph (129.02 km/h) |
| 85 mph (136.79 km/h) | 85.18 mph (137.08 km/h) |
| 90 mph (144.84 km/h) | 90.19 mph (145.15 km/h) |
| 95 mph (152.89 km/h) | 95.2 mph (153.21 km/h) |
| 100 mph (160.93 km/h) | 100.21 mph (161.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1831 | 2127 | 2291 | 2392 | 2501 | 2579 | 2665 | 2766 | 2907 | 3047 | 3203 | 3327 | 3553 | 3803 | 3997 | 4122 | 4192 | 4449 | 4808 | 5587 |
Better Fuel Economy Factory Ratios Increased Power
