Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 355/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 38.17 (969.5) | 11.77 (299) 44.6% |
| Width inches (mm) | 12.8 (325) | 13.98 (355) | 1.18 (30) 9.2% |
| Circum. inches (mm) | 82.93 (2106.44) | 119.91 (3045.77) | 36.98 (939.34) 44.6% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 9.08 (230.75) | 5.89 (149.5) 184% |
| Revolutions per mile (km) | 764.01 (474.73) | 528.39 (328.32) | -235.63 (-146.41) -30.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.92 mph (46.54 km/h) |
| 25 mph (40.23 km/h) | 36.15 mph (58.18 km/h) |
| 30 mph (48.28 km/h) | 43.38 mph (69.81 km/h) |
| 35 mph (56.33 km/h) | 50.61 mph (81.45 km/h) |
| 40 mph (64.37 km/h) | 57.84 mph (93.08 km/h) |
| 45 mph (72.42 km/h) | 65.07 mph (104.72 km/h) |
| 50 mph (80.47 km/h) | 72.3 mph (116.35 km/h) |
| 55 mph (88.51 km/h) | 79.53 mph (127.99 km/h) |
| 60 mph (96.56 km/h) | 86.76 mph (139.62 km/h) |
| 65 mph (104.61 km/h) | 93.99 mph (151.26 km/h) |
| 70 mph (112.65 km/h) | 101.22 mph (162.89 km/h) |
| 75 mph (120.7 km/h) | 108.45 mph (174.53 km/h) |
| 80 mph (128.75 km/h) | 115.67 mph (186.16 km/h) |
| 85 mph (136.79 km/h) | 122.9 mph (197.8 km/h) |
| 90 mph (144.84 km/h) | 130.13 mph (209.43 km/h) |
| 95 mph (152.89 km/h) | 137.36 mph (221.07 km/h) |
| 100 mph (160.93 km/h) | 144.59 mph (232.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1345 | 1562 | 1682 | 1757 | 1837 | 1894 | 1957 | 2031 | 2134 | 2237 | 2352 | 2443 | 2609 | 2792 | 2935 | 3027 | 3078 | 3267 | 3530 | 4103 |
Better Fuel Economy Factory Ratios Increased Power
