Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 31/12.5-17 | 33/12.5-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.02 (787.96) | 33.03 (838.84) | 2 (50.88) 6.5% |
| Width inches (mm) | 12.52 (318) | 12.52 (318) | 0 (0) 0% |
| Circum. inches (mm) | 97.46 (2475.45) | 103.75 (2635.29) | 6.29 (159.84) 6.5% |
| Sidewall Height inches (mm) | 7.01 (178.08) | 8.01 (203.52) | 1 (25.44) 14.3% |
| Revolutions per mile (km) | 650.12 (403.97) | 610.69 (379.46) | -39.43 (-24.5) -6.1% |
33/12.5-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.29 mph (34.27 km/h) |
| 25 mph (40.23 km/h) | 26.61 mph (42.83 km/h) |
| 30 mph (48.28 km/h) | 31.94 mph (51.4 km/h) |
| 35 mph (56.33 km/h) | 37.26 mph (59.96 km/h) |
| 40 mph (64.37 km/h) | 42.58 mph (68.53 km/h) |
| 45 mph (72.42 km/h) | 47.91 mph (77.1 km/h) |
| 50 mph (80.47 km/h) | 53.23 mph (85.66 km/h) |
| 55 mph (88.51 km/h) | 58.55 mph (94.23 km/h) |
| 60 mph (96.56 km/h) | 63.87 mph (102.8 km/h) |
| 65 mph (104.61 km/h) | 69.2 mph (111.36 km/h) |
| 70 mph (112.65 km/h) | 74.52 mph (119.93 km/h) |
| 75 mph (120.7 km/h) | 79.84 mph (128.49 km/h) |
| 80 mph (128.75 km/h) | 85.17 mph (137.06 km/h) |
| 85 mph (136.79 km/h) | 90.49 mph (145.63 km/h) |
| 90 mph (144.84 km/h) | 95.81 mph (154.19 km/h) |
| 95 mph (152.89 km/h) | 101.13 mph (162.76 km/h) |
| 100 mph (160.93 km/h) | 106.46 mph (171.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1554 | 1805 | 1944 | 2030 | 2123 | 2189 | 2262 | 2348 | 2467 | 2586 | 2718 | 2824 | 3016 | 3227 | 3393 | 3498 | 3558 | 3776 | 4080 | 4742 |
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