Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/85-13 | 225/85-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.71 (627.7) | 28.06 (712.7) | 3.35 (85) 13.5% |
| Width inches (mm) | 6.89 (175) | 8.86 (225) | 1.97 (50) 28.6% |
| Circum. inches (mm) | 77.64 (1971.98) | 88.15 (2239.01) | 10.51 (267.04) 13.5% |
| Sidewall Height inches (mm) | 5.86 (148.75) | 7.53 (191.25) | 1.67 (42.5) 28.6% |
| Revolutions per mile (km) | 816.11 (507.1) | 718.77 (446.62) | -97.33 (-60.48) -11.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.71 mph (36.55 km/h) |
| 25 mph (40.23 km/h) | 28.39 mph (45.68 km/h) |
| 30 mph (48.28 km/h) | 34.06 mph (54.82 km/h) |
| 35 mph (56.33 km/h) | 39.74 mph (63.95 km/h) |
| 40 mph (64.37 km/h) | 45.42 mph (73.09 km/h) |
| 45 mph (72.42 km/h) | 51.09 mph (82.23 km/h) |
| 50 mph (80.47 km/h) | 56.77 mph (91.36 km/h) |
| 55 mph (88.51 km/h) | 62.45 mph (100.5 km/h) |
| 60 mph (96.56 km/h) | 68.12 mph (109.64 km/h) |
| 65 mph (104.61 km/h) | 73.8 mph (118.77 km/h) |
| 70 mph (112.65 km/h) | 79.48 mph (127.91 km/h) |
| 75 mph (120.7 km/h) | 85.16 mph (137.05 km/h) |
| 80 mph (128.75 km/h) | 90.83 mph (146.18 km/h) |
| 85 mph (136.79 km/h) | 96.51 mph (155.32 km/h) |
| 90 mph (144.84 km/h) | 102.19 mph (164.45 km/h) |
| 95 mph (152.89 km/h) | 107.86 mph (173.59 km/h) |
| 100 mph (160.93 km/h) | 113.54 mph (182.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1829 | 2125 | 2288 | 2390 | 2499 | 2576 | 2662 | 2763 | 2903 | 3043 | 3199 | 3324 | 3549 | 3798 | 3993 | 4118 | 4188 | 4444 | 4802 | 5581 |
Better Fuel Economy Factory Ratios Increased Power
