Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 275/30-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 23.5 (596.8) | -4.49 (-114.1) -16.1% |
| Width inches (mm) | 13.98 (355) | 10.83 (275) | -3.15 (-80) -22.5% |
| Circum. inches (mm) | 87.93 (2233.36) | 73.82 (1874.9) | -14.11 (-358.46) -16.1% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 3.25 (82.5) | -0.25 (-6.25) -7% |
| Revolutions per mile (km) | 720.59 (447.76) | 858.36 (533.36) | 137.77 (85.6) 19.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.79 mph (27.02 km/h) |
| 25 mph (40.23 km/h) | 20.99 mph (33.78 km/h) |
| 30 mph (48.28 km/h) | 25.18 mph (40.53 km/h) |
| 35 mph (56.33 km/h) | 29.38 mph (47.29 km/h) |
| 40 mph (64.37 km/h) | 33.58 mph (54.04 km/h) |
| 45 mph (72.42 km/h) | 37.78 mph (60.8 km/h) |
| 50 mph (80.47 km/h) | 41.97 mph (67.55 km/h) |
| 55 mph (88.51 km/h) | 46.17 mph (74.31 km/h) |
| 60 mph (96.56 km/h) | 50.37 mph (81.06 km/h) |
| 65 mph (104.61 km/h) | 54.57 mph (87.82 km/h) |
| 70 mph (112.65 km/h) | 58.76 mph (94.57 km/h) |
| 75 mph (120.7 km/h) | 62.96 mph (101.33 km/h) |
| 80 mph (128.75 km/h) | 67.16 mph (108.08 km/h) |
| 85 mph (136.79 km/h) | 71.36 mph (114.84 km/h) |
| 90 mph (144.84 km/h) | 75.55 mph (121.59 km/h) |
| 95 mph (152.89 km/h) | 79.75 mph (128.35 km/h) |
| 100 mph (160.93 km/h) | 83.95 mph (135.1 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2184 | 2538 | 2733 | 2854 | 2984 | 3077 | 3179 | 3300 | 3467 | 3634 | 3820 | 3969 | 4239 | 4536 | 4768 | 4917 | 5001 | 5308 | 5735 | 6665 |
Better Fuel Economy Factory Ratios Increased Power
