Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/85-16 | 285/85-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.73 (805.9) | 35.07 (890.9) | 3.35 (85) 10.5% |
| Width inches (mm) | 9.25 (235) | 11.22 (285) | 1.97 (50) 21.3% |
| Circum. inches (mm) | 99.68 (2531.81) | 110.19 (2798.84) | 10.51 (267.04) 10.5% |
| Sidewall Height inches (mm) | 7.86 (199.75) | 9.54 (242.25) | 1.67 (42.5) 21.3% |
| Revolutions per mile (km) | 635.65 (394.97) | 575 (357.29) | -60.65 (-37.68) -9.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.11 mph (35.58 km/h) |
| 25 mph (40.23 km/h) | 27.64 mph (44.48 km/h) |
| 30 mph (48.28 km/h) | 33.16 mph (53.37 km/h) |
| 35 mph (56.33 km/h) | 38.69 mph (62.27 km/h) |
| 40 mph (64.37 km/h) | 44.22 mph (71.16 km/h) |
| 45 mph (72.42 km/h) | 49.75 mph (80.06 km/h) |
| 50 mph (80.47 km/h) | 55.27 mph (88.95 km/h) |
| 55 mph (88.51 km/h) | 60.8 mph (97.85 km/h) |
| 60 mph (96.56 km/h) | 66.33 mph (106.75 km/h) |
| 65 mph (104.61 km/h) | 71.86 mph (115.64 km/h) |
| 70 mph (112.65 km/h) | 77.38 mph (124.54 km/h) |
| 75 mph (120.7 km/h) | 82.91 mph (133.43 km/h) |
| 80 mph (128.75 km/h) | 88.44 mph (142.33 km/h) |
| 85 mph (136.79 km/h) | 93.97 mph (151.22 km/h) |
| 90 mph (144.84 km/h) | 99.49 mph (160.12 km/h) |
| 95 mph (152.89 km/h) | 105.02 mph (169.01 km/h) |
| 100 mph (160.93 km/h) | 110.55 mph (177.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1463 | 1700 | 1831 | 1912 | 1999 | 2061 | 2130 | 2210 | 2323 | 2435 | 2559 | 2659 | 2839 | 3039 | 3194 | 3294 | 3350 | 3555 | 3842 | 4465 |
Better Fuel Economy Factory Ratios Increased Power
