Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 256/60-18 | 33/12.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.09 (764.4) | 33.02 (838.8) | 2.93 (74.4) 9.7% |
| Width inches (mm) | 10.08 (256) | 12.52 (318) | 2.44 (62) 24.2% |
| Circum. inches (mm) | 94.54 (2401.43) | 103.75 (2635.17) | 9.2 (233.73) 9.7% |
| Sidewall Height inches (mm) | 6.05 (153.6) | 7.51 (190.8) | 1.46 (37.2) 24.2% |
| Revolutions per mile (km) | 670.16 (416.42) | 610.72 (379.48) | -59.44 (-36.94) -8.9% |
33/12.5-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.95 mph (35.32 km/h) |
| 25 mph (40.23 km/h) | 27.43 mph (44.15 km/h) |
| 30 mph (48.28 km/h) | 32.92 mph (52.98 km/h) |
| 35 mph (56.33 km/h) | 38.41 mph (61.81 km/h) |
| 40 mph (64.37 km/h) | 43.89 mph (70.64 km/h) |
| 45 mph (72.42 km/h) | 49.38 mph (79.47 km/h) |
| 50 mph (80.47 km/h) | 54.87 mph (88.3 km/h) |
| 55 mph (88.51 km/h) | 60.35 mph (97.13 km/h) |
| 60 mph (96.56 km/h) | 65.84 mph (105.96 km/h) |
| 65 mph (104.61 km/h) | 71.33 mph (114.79 km/h) |
| 70 mph (112.65 km/h) | 76.81 mph (123.62 km/h) |
| 75 mph (120.7 km/h) | 82.3 mph (132.45 km/h) |
| 80 mph (128.75 km/h) | 87.79 mph (141.28 km/h) |
| 85 mph (136.79 km/h) | 93.27 mph (150.11 km/h) |
| 90 mph (144.84 km/h) | 98.76 mph (158.94 km/h) |
| 95 mph (152.89 km/h) | 104.25 mph (167.77 km/h) |
| 100 mph (160.93 km/h) | 109.73 mph (176.6 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 | 3499 | 3558 | 3776 | 4080 | 4742 |
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