Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-16 | 32/12.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.73 (805.9) | 32.03 (813.48) | 0.3 (7.58) 0.9% |
| Width inches (mm) | 9.25 (235) | 12.52 (318) | 3.27 (83) 35.3% |
| Circum. inches (mm) | 99.68 (2531.81) | 100.62 (2555.62) | 0.94 (23.81) 0.9% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 8.51 (216.24) | 0.65 (16.49) 8.3% |
| Revolutions per mile (km) | 635.65 (394.97) | 629.73 (391.29) | -5.92 (-3.68) -0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.19 mph (32.49 km/h) |
| 25 mph (40.23 km/h) | 25.24 mph (40.61 km/h) |
| 30 mph (48.28 km/h) | 30.28 mph (48.73 km/h) |
| 35 mph (56.33 km/h) | 35.33 mph (56.86 km/h) |
| 40 mph (64.37 km/h) | 40.38 mph (64.98 km/h) |
| 45 mph (72.42 km/h) | 45.42 mph (73.1 km/h) |
| 50 mph (80.47 km/h) | 50.47 mph (81.22 km/h) |
| 55 mph (88.51 km/h) | 55.52 mph (89.35 km/h) |
| 60 mph (96.56 km/h) | 60.56 mph (97.47 km/h) |
| 65 mph (104.61 km/h) | 65.61 mph (105.59 km/h) |
| 70 mph (112.65 km/h) | 70.66 mph (113.71 km/h) |
| 75 mph (120.7 km/h) | 75.71 mph (121.84 km/h) |
| 80 mph (128.75 km/h) | 80.75 mph (129.96 km/h) |
| 85 mph (136.79 km/h) | 85.8 mph (138.08 km/h) |
| 90 mph (144.84 km/h) | 90.85 mph (146.2 km/h) |
| 95 mph (152.89 km/h) | 95.89 mph (154.33 km/h) |
| 100 mph (160.93 km/h) | 100.94 mph (162.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1603 | 1862 | 2005 | 2094 | 2189 | 2257 | 2332 | 2421 | 2544 | 2666 | 2803 | 2912 | 3110 | 3328 | 3498 | 3607 | 3669 | 3894 | 4208 | 4889 |
Better Fuel Economy Factory Ratios Increased Power
