Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-16 | 235/75-17.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.73 (805.9) | 31.38 (797) | -0.35 (-8.9) -1.1% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 99.68 (2531.81) | 98.58 (2503.85) | -1.1 (-27.96) -1.1% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 6.94 (176.25) | -0.93 (-23.5) -11.8% |
| Revolutions per mile (km) | 635.65 (394.97) | 642.75 (399.38) | 7.1 (4.41) 1.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.78 mph (31.83 km/h) |
| 25 mph (40.23 km/h) | 24.72 mph (39.79 km/h) |
| 30 mph (48.28 km/h) | 29.67 mph (47.75 km/h) |
| 35 mph (56.33 km/h) | 34.61 mph (55.71 km/h) |
| 40 mph (64.37 km/h) | 39.56 mph (63.66 km/h) |
| 45 mph (72.42 km/h) | 44.5 mph (71.62 km/h) |
| 50 mph (80.47 km/h) | 49.45 mph (79.58 km/h) |
| 55 mph (88.51 km/h) | 54.39 mph (87.54 km/h) |
| 60 mph (96.56 km/h) | 59.34 mph (95.49 km/h) |
| 65 mph (104.61 km/h) | 64.28 mph (103.45 km/h) |
| 70 mph (112.65 km/h) | 69.23 mph (111.41 km/h) |
| 75 mph (120.7 km/h) | 74.17 mph (119.37 km/h) |
| 80 mph (128.75 km/h) | 79.12 mph (127.33 km/h) |
| 85 mph (136.79 km/h) | 84.06 mph (135.28 km/h) |
| 90 mph (144.84 km/h) | 89.01 mph (143.24 km/h) |
| 95 mph (152.89 km/h) | 93.95 mph (151.2 km/h) |
| 100 mph (160.93 km/h) | 98.9 mph (159.16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1636 | 1900 | 2046 | 2137 | 2234 | 2304 | 2380 | 2471 | 2596 | 2721 | 2861 | 2972 | 3174 | 3397 | 3571 | 3682 | 3745 | 3974 | 4295 | 4991 |
Better Fuel Economy Factory Ratios Increased Power
