Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-17 | 33/12.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.73 (831.3) | 33.03 (838.84) | 0.3 (7.54) 0.9% |
| Width inches (mm) | 9.25 (235) | 12.52 (318) | 3.27 (83) 35.3% |
| Circum. inches (mm) | 102.82 (2611.61) | 103.75 (2635.29) | 0.93 (23.69) 0.9% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 8.01 (203.52) | 0.15 (3.77) 1.9% |
| Revolutions per mile (km) | 616.23 (382.91) | 610.69 (379.46) | -5.54 (-3.44) -0.9% |
33/12.5-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.18 mph (32.48 km/h) |
| 25 mph (40.23 km/h) | 25.23 mph (40.6 km/h) |
| 30 mph (48.28 km/h) | 30.27 mph (48.72 km/h) |
| 35 mph (56.33 km/h) | 35.32 mph (56.84 km/h) |
| 40 mph (64.37 km/h) | 40.36 mph (64.96 km/h) |
| 45 mph (72.42 km/h) | 45.41 mph (73.08 km/h) |
| 50 mph (80.47 km/h) | 50.45 mph (81.2 km/h) |
| 55 mph (88.51 km/h) | 55.5 mph (89.32 km/h) |
| 60 mph (96.56 km/h) | 60.54 mph (97.44 km/h) |
| 65 mph (104.61 km/h) | 65.59 mph (105.56 km/h) |
| 70 mph (112.65 km/h) | 70.63 mph (113.68 km/h) |
| 75 mph (120.7 km/h) | 75.68 mph (121.8 km/h) |
| 80 mph (128.75 km/h) | 80.73 mph (129.92 km/h) |
| 85 mph (136.79 km/h) | 85.77 mph (138.04 km/h) |
| 90 mph (144.84 km/h) | 90.82 mph (146.15 km/h) |
| 95 mph (152.89 km/h) | 95.86 mph (154.27 km/h) |
| 100 mph (160.93 km/h) | 100.91 mph (162.39 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1554 | 1805 | 1944 | 2030 | 2123 | 2189 | 2262 | 2348 | 2467 | 2586 | 2718 | 2824 | 3016 | 3227 | 3393 | 3498 | 3558 | 3776 | 4080 | 4742 |
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