Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-17 | 225/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.73 (831.3) | 32.06 (814.3) | -0.67 (-17) -2% |
| Width inches (mm) | 9.25 (235) | 8.86 (225) | -0.39 (-10) -4.3% |
| Circum. inches (mm) | 102.82 (2611.61) | 100.72 (2558.2) | -2.1 (-53.41) -2% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 7.53 (191.25) | -0.33 (-8.5) -4.3% |
| Revolutions per mile (km) | 616.23 (382.91) | 629.09 (390.9) | 12.86 (7.99) 2.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.59 mph (31.53 km/h) |
| 25 mph (40.23 km/h) | 24.49 mph (39.41 km/h) |
| 30 mph (48.28 km/h) | 29.39 mph (47.29 km/h) |
| 35 mph (56.33 km/h) | 34.28 mph (55.18 km/h) |
| 40 mph (64.37 km/h) | 39.18 mph (63.06 km/h) |
| 45 mph (72.42 km/h) | 44.08 mph (70.94 km/h) |
| 50 mph (80.47 km/h) | 48.98 mph (78.82 km/h) |
| 55 mph (88.51 km/h) | 53.88 mph (86.7 km/h) |
| 60 mph (96.56 km/h) | 58.77 mph (94.59 km/h) |
| 65 mph (104.61 km/h) | 63.67 mph (102.47 km/h) |
| 70 mph (112.65 km/h) | 68.57 mph (110.35 km/h) |
| 75 mph (120.7 km/h) | 73.47 mph (118.23 km/h) |
| 80 mph (128.75 km/h) | 78.36 mph (126.11 km/h) |
| 85 mph (136.79 km/h) | 83.26 mph (134 km/h) |
| 90 mph (144.84 km/h) | 88.16 mph (141.88 km/h) |
| 95 mph (152.89 km/h) | 93.06 mph (149.76 km/h) |
| 100 mph (160.93 km/h) | 97.96 mph (157.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 | 1860 | 2003 | 2091 | 2187 | 2255 | 2330 | 2418 | 2541 | 2664 | 2800 | 2909 | 3106 | 3324 | 3495 | 3604 | 3665 | 3890 | 4203 | 4885 |
Better Fuel Economy Factory Ratios Increased Power
