Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/25-20 | 235/85-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.61 (650.5) | 31.73 (805.9) | 6.12 (155.4) 23.9% |
| Width inches (mm) | 11.22 (285) | 9.25 (235) | -1.97 (-50) -17.5% |
| Circum. inches (mm) | 80.46 (2043.61) | 99.68 (2531.81) | 19.22 (488.2) 23.9% |
| Sidewall Height inches (mm) | 2.81 (71.25) | 7.86 (199.75) | 5.06 (128.5) 180.4% |
| Revolutions per mile (km) | 787.5 (489.33) | 635.65 (394.97) | -151.85 (-94.36) -19.3% |
235/85-16 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.78 mph (39.88 km/h) |
| 25 mph (40.23 km/h) | 30.97 mph (49.85 km/h) |
| 30 mph (48.28 km/h) | 37.17 mph (59.81 km/h) |
| 35 mph (56.33 km/h) | 43.36 mph (69.78 km/h) |
| 40 mph (64.37 km/h) | 49.56 mph (79.75 km/h) |
| 45 mph (72.42 km/h) | 55.75 mph (89.72 km/h) |
| 50 mph (80.47 km/h) | 61.94 mph (99.69 km/h) |
| 55 mph (88.51 km/h) | 68.14 mph (109.66 km/h) |
| 60 mph (96.56 km/h) | 74.33 mph (119.63 km/h) |
| 65 mph (104.61 km/h) | 80.53 mph (129.6 km/h) |
| 70 mph (112.65 km/h) | 86.72 mph (139.57 km/h) |
| 75 mph (120.7 km/h) | 92.92 mph (149.54 km/h) |
| 80 mph (128.75 km/h) | 99.11 mph (159.5 km/h) |
| 85 mph (136.79 km/h) | 105.31 mph (169.47 km/h) |
| 90 mph (144.84 km/h) | 111.5 mph (179.44 km/h) |
| 95 mph (152.89 km/h) | 117.69 mph (189.41 km/h) |
| 100 mph (160.93 km/h) | 123.89 mph (199.38 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 |
Better Fuel Economy Factory Ratios Increased Power
