Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/80-16 | 235/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.8 (782.4) | 32.73 (831.3) | 1.93 (48.9) 6.3% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 96.77 (2457.98) | 102.82 (2611.61) | 6.05 (153.62) 6.3% |
| Sidewall Height inches (mm) | 7.4 (188) | 7.86 (199.75) | 0.46 (11.75) 6.3% |
| Revolutions per mile (km) | 654.74 (406.84) | 616.23 (382.91) | -38.51 (-23.93) -5.9% |
235/85-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.25 mph (34.2 km/h) |
| 25 mph (40.23 km/h) | 26.56 mph (42.75 km/h) |
| 30 mph (48.28 km/h) | 31.88 mph (51.3 km/h) |
| 35 mph (56.33 km/h) | 37.19 mph (59.85 km/h) |
| 40 mph (64.37 km/h) | 42.5 mph (68.4 km/h) |
| 45 mph (72.42 km/h) | 47.81 mph (76.95 km/h) |
| 50 mph (80.47 km/h) | 53.13 mph (85.5 km/h) |
| 55 mph (88.51 km/h) | 58.44 mph (94.05 km/h) |
| 60 mph (96.56 km/h) | 63.75 mph (102.6 km/h) |
| 65 mph (104.61 km/h) | 69.06 mph (111.15 km/h) |
| 70 mph (112.65 km/h) | 74.38 mph (119.7 km/h) |
| 75 mph (120.7 km/h) | 79.69 mph (128.24 km/h) |
| 80 mph (128.75 km/h) | 85 mph (136.79 km/h) |
| 85 mph (136.79 km/h) | 90.31 mph (145.34 km/h) |
| 90 mph (144.84 km/h) | 95.63 mph (153.89 km/h) |
| 95 mph (152.89 km/h) | 100.94 mph (162.44 km/h) |
| 100 mph (160.93 km/h) | 106.25 mph (170.99 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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