Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-15 | 285/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.71 (780) | 29.59 (751.5) | -1.12 (-28.5) -3.7% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 96.47 (2450.44) | 92.95 (2360.91) | -3.53 (-89.54) -3.7% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 7.29 (185.25) | -0.56 (-14.25) -7.1% |
| Revolutions per mile (km) | 656.76 (408.09) | 681.66 (423.57) | 24.91 (15.48) 3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.27 mph (31.01 km/h) |
| 25 mph (40.23 km/h) | 24.09 mph (38.76 km/h) |
| 30 mph (48.28 km/h) | 28.9 mph (46.52 km/h) |
| 35 mph (56.33 km/h) | 33.72 mph (54.27 km/h) |
| 40 mph (64.37 km/h) | 38.54 mph (62.02 km/h) |
| 45 mph (72.42 km/h) | 43.36 mph (69.77 km/h) |
| 50 mph (80.47 km/h) | 48.17 mph (77.53 km/h) |
| 55 mph (88.51 km/h) | 52.99 mph (85.28 km/h) |
| 60 mph (96.56 km/h) | 57.81 mph (93.03 km/h) |
| 65 mph (104.61 km/h) | 62.63 mph (100.79 km/h) |
| 70 mph (112.65 km/h) | 67.44 mph (108.54 km/h) |
| 75 mph (120.7 km/h) | 72.26 mph (116.29 km/h) |
| 80 mph (128.75 km/h) | 77.08 mph (124.04 km/h) |
| 85 mph (136.79 km/h) | 81.89 mph (131.8 km/h) |
| 90 mph (144.84 km/h) | 86.71 mph (139.55 km/h) |
| 95 mph (152.89 km/h) | 91.53 mph (147.3 km/h) |
| 100 mph (160.93 km/h) | 96.35 mph (155.05 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1735 | 2015 | 2170 | 2266 | 2370 | 2443 | 2525 | 2621 | 2753 | 2886 | 3034 | 3152 | 3366 | 3602 | 3787 | 3905 | 3971 | 4215 | 4555 | 5293 |
Better Fuel Economy Factory Ratios Increased Power
