Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-15 | 235/80-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.73 (780.5) | 30.8 (782.4) | 0.07 (1.9) 0.2% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 96.54 (2452.01) | 96.77 (2457.98) | 0.24 (5.97) 0.2% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 7.4 (188) | -0.46 (-11.75) -5.9% |
| Revolutions per mile (km) | 656.34 (407.83) | 654.74 (406.84) | -1.59 (-0.99) -0.2% |
235/80-16 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.05 mph (32.27 km/h) |
| 25 mph (40.23 km/h) | 25.06 mph (40.33 km/h) |
| 30 mph (48.28 km/h) | 30.07 mph (48.4 km/h) |
| 35 mph (56.33 km/h) | 35.09 mph (56.46 km/h) |
| 40 mph (64.37 km/h) | 40.1 mph (64.53 km/h) |
| 45 mph (72.42 km/h) | 45.11 mph (72.6 km/h) |
| 50 mph (80.47 km/h) | 50.12 mph (80.66 km/h) |
| 55 mph (88.51 km/h) | 55.13 mph (88.73 km/h) |
| 60 mph (96.56 km/h) | 60.15 mph (96.8 km/h) |
| 65 mph (104.61 km/h) | 65.16 mph (104.86 km/h) |
| 70 mph (112.65 km/h) | 70.17 mph (112.93 km/h) |
| 75 mph (120.7 km/h) | 75.18 mph (120.99 km/h) |
| 80 mph (128.75 km/h) | 80.19 mph (129.06 km/h) |
| 85 mph (136.79 km/h) | 85.21 mph (137.13 km/h) |
| 90 mph (144.84 km/h) | 90.22 mph (145.19 km/h) |
| 95 mph (152.89 km/h) | 95.23 mph (153.26 km/h) |
| 100 mph (160.93 km/h) | 100.24 mph (161.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1666 | 1936 | 2085 | 2177 | 2276 | 2347 | 2425 | 2517 | 2645 | 2772 | 2914 | 3028 | 3233 | 3460 | 3637 | 3751 | 3815 | 4048 | 4375 | 5084 |
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