Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/90-16 | 235/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.53 (775.4) | 32.73 (831.3) | 2.2 (55.9) 7.2% |
| Width inches (mm) | 8.07 (205) | 9.25 (235) | 1.18 (30) 14.6% |
| Circum. inches (mm) | 95.91 (2435.99) | 102.82 (2611.61) | 6.91 (175.62) 7.2% |
| Sidewall Height inches (mm) | 7.26 (184.5) | 7.86 (199.75) | 0.6 (15.25) 8.3% |
| Revolutions per mile (km) | 660.65 (410.51) | 616.23 (382.91) | -44.42 (-27.6) -6.7% |
235/85-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.44 mph (34.51 km/h) |
| 25 mph (40.23 km/h) | 26.8 mph (43.13 km/h) |
| 30 mph (48.28 km/h) | 32.16 mph (51.76 km/h) |
| 35 mph (56.33 km/h) | 37.52 mph (60.39 km/h) |
| 40 mph (64.37 km/h) | 42.88 mph (69.01 km/h) |
| 45 mph (72.42 km/h) | 48.24 mph (77.64 km/h) |
| 50 mph (80.47 km/h) | 53.6 mph (86.27 km/h) |
| 55 mph (88.51 km/h) | 58.97 mph (94.9 km/h) |
| 60 mph (96.56 km/h) | 64.33 mph (103.52 km/h) |
| 65 mph (104.61 km/h) | 69.69 mph (112.15 km/h) |
| 70 mph (112.65 km/h) | 75.05 mph (120.78 km/h) |
| 75 mph (120.7 km/h) | 80.41 mph (129.4 km/h) |
| 80 mph (128.75 km/h) | 85.77 mph (138.03 km/h) |
| 85 mph (136.79 km/h) | 91.13 mph (146.66 km/h) |
| 90 mph (144.84 km/h) | 96.49 mph (155.28 km/h) |
| 95 mph (152.89 km/h) | 101.85 mph (163.91 km/h) |
| 100 mph (160.93 km/h) | 107.21 mph (172.54 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1568 | 1822 | 1962 | 2049 | 2142 | 2209 | 2282 | 2369 | 2489 | 2609 | 2743 | 2849 | 3043 | 3256 | 3423 | 3530 | 3590 | 3810 | 4117 | 4785 |
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