Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 235/85-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 31.73 (805.9) | -3.01 (-76.5) -8.7% |
| Width inches (mm) | 11.02 (280) | 9.25 (235) | -1.77 (-45) -16.1% |
| Circum. inches (mm) | 109.14 (2772.14) | 99.68 (2531.81) | -9.46 (-240.33) -8.7% |
| Sidewall Height inches (mm) | 9.37 (238) | 7.86 (199.75) | -1.51 (-38.25) -16.1% |
| Revolutions per mile (km) | 580.54 (360.73) | 635.65 (394.97) | 55.11 (34.24) 9.5% |
235/85-16 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.27 mph (29.4 km/h) |
| 25 mph (40.23 km/h) | 22.83 mph (36.75 km/h) |
| 30 mph (48.28 km/h) | 27.4 mph (44.09 km/h) |
| 35 mph (56.33 km/h) | 31.97 mph (51.44 km/h) |
| 40 mph (64.37 km/h) | 36.53 mph (58.79 km/h) |
| 45 mph (72.42 km/h) | 41.1 mph (66.14 km/h) |
| 50 mph (80.47 km/h) | 45.67 mph (73.49 km/h) |
| 55 mph (88.51 km/h) | 50.23 mph (80.84 km/h) |
| 60 mph (96.56 km/h) | 54.8 mph (88.19 km/h) |
| 65 mph (104.61 km/h) | 59.36 mph (95.54 km/h) |
| 70 mph (112.65 km/h) | 63.93 mph (102.89 km/h) |
| 75 mph (120.7 km/h) | 68.5 mph (110.24 km/h) |
| 80 mph (128.75 km/h) | 73.06 mph (117.59 km/h) |
| 85 mph (136.79 km/h) | 77.63 mph (124.94 km/h) |
| 90 mph (144.84 km/h) | 82.2 mph (132.28 km/h) |
| 95 mph (152.89 km/h) | 86.76 mph (139.63 km/h) |
| 100 mph (160.93 km/h) | 91.33 mph (146.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1618 | 1879 | 2024 | 2113 | 2210 | 2278 | 2354 | 2444 | 2568 | 2691 | 2829 | 2939 | 3139 | 3359 | 3531 | 3641 | 3703 | 3930 | 4247 | 4935 |
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