Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/85-16 | 255/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.07 (839.9) | 34.06 (865) | 0.99 (25.1) 3% |
| Width inches (mm) | 10.04 (255) | 10.04 (255) | 0 (0) 0% |
| Circum. inches (mm) | 103.88 (2638.62) | 106.99 (2717.48) | 3.1 (78.85) 3% |
| Sidewall Height inches (mm) | 8.53 (216.75) | 7.03 (178.5) | -1.51 (-38.25) -17.6% |
| Revolutions per mile (km) | 609.92 (378.98) | 592.22 (367.99) | -17.7 (-11) -2.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.6 mph (33.15 km/h) |
| 25 mph (40.23 km/h) | 25.75 mph (41.44 km/h) |
| 30 mph (48.28 km/h) | 30.9 mph (49.72 km/h) |
| 35 mph (56.33 km/h) | 36.05 mph (58.01 km/h) |
| 40 mph (64.37 km/h) | 41.2 mph (66.3 km/h) |
| 45 mph (72.42 km/h) | 46.34 mph (74.58 km/h) |
| 50 mph (80.47 km/h) | 51.49 mph (82.87 km/h) |
| 55 mph (88.51 km/h) | 56.64 mph (91.16 km/h) |
| 60 mph (96.56 km/h) | 61.79 mph (99.45 km/h) |
| 65 mph (104.61 km/h) | 66.94 mph (107.73 km/h) |
| 70 mph (112.65 km/h) | 72.09 mph (116.02 km/h) |
| 75 mph (120.7 km/h) | 77.24 mph (124.31 km/h) |
| 80 mph (128.75 km/h) | 82.39 mph (132.6 km/h) |
| 85 mph (136.79 km/h) | 87.54 mph (140.88 km/h) |
| 90 mph (144.84 km/h) | 92.69 mph (149.17 km/h) |
| 95 mph (152.89 km/h) | 97.84 mph (157.46 km/h) |
| 100 mph (160.93 km/h) | 102.99 mph (165.74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1507 | 1751 | 1885 | 1969 | 2059 | 2123 | 2193 | 2277 | 2392 | 2508 | 2636 | 2738 | 2924 | 3130 | 3290 | 3393 | 3450 | 3662 | 3957 | 4598 |
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