Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 355/25-21 | 375/35-21 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.99 (710.9) | 31.33 (795.9) | 3.35 (85) 12% |
| Width inches (mm) | 13.98 (355) | 14.76 (375) | 0.79 (20) 5.6% |
| Circum. inches (mm) | 87.93 (2233.36) | 98.44 (2500.39) | 10.51 (267.04) 12% |
| Sidewall Height inches (mm) | 3.49 (88.75) | 5.17 (131.25) | 1.67 (42.5) 47.9% |
| Revolutions per mile (km) | 720.59 (447.76) | 643.64 (399.94) | -76.96 (-47.82) -10.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.39 mph (36.04 km/h) |
| 25 mph (40.23 km/h) | 27.99 mph (45.04 km/h) |
| 30 mph (48.28 km/h) | 33.59 mph (54.05 km/h) |
| 35 mph (56.33 km/h) | 39.18 mph (63.06 km/h) |
| 40 mph (64.37 km/h) | 44.78 mph (72.07 km/h) |
| 45 mph (72.42 km/h) | 50.38 mph (81.08 km/h) |
| 50 mph (80.47 km/h) | 55.98 mph (90.09 km/h) |
| 55 mph (88.51 km/h) | 61.58 mph (99.1 km/h) |
| 60 mph (96.56 km/h) | 67.17 mph (108.11 km/h) |
| 65 mph (104.61 km/h) | 72.77 mph (117.12 km/h) |
| 70 mph (112.65 km/h) | 78.37 mph (126.12 km/h) |
| 75 mph (120.7 km/h) | 83.97 mph (135.13 km/h) |
| 80 mph (128.75 km/h) | 89.57 mph (144.14 km/h) |
| 85 mph (136.79 km/h) | 95.16 mph (153.15 km/h) |
| 90 mph (144.84 km/h) | 100.76 mph (162.16 km/h) |
| 95 mph (152.89 km/h) | 106.36 mph (171.17 km/h) |
| 100 mph (160.93 km/h) | 111.96 mph (180.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1638 | 1903 | 2049 | 2140 | 2237 | 2307 | 2384 | 2474 | 2600 | 2725 | 2865 | 2976 | 3178 | 3401 | 3576 | 3687 | 3750 | 3980 | 4300 | 4997 |
Better Fuel Economy Factory Ratios Increased Power
