Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-15 | 285/35-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 22.85 (580.5) | -1.12 (-28.5) -4.7% |
| Width inches (mm) | 11.22 (285) | 11.22 (285) | 0 (0) 0% |
| Circum. inches (mm) | 75.32 (1913.23) | 71.8 (1823.69) | -3.53 (-89.54) -4.7% |
| Sidewall Height inches (mm) | 4.49 (114) | 3.93 (99.75) | -0.56 (-14.25) -12.5% |
| Revolutions per mile (km) | 841.17 (522.68) | 882.46 (548.34) | 41.3 (25.66) 4.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.06 mph (30.68 km/h) |
| 25 mph (40.23 km/h) | 23.83 mph (38.35 km/h) |
| 30 mph (48.28 km/h) | 28.6 mph (46.02 km/h) |
| 35 mph (56.33 km/h) | 33.36 mph (53.69 km/h) |
| 40 mph (64.37 km/h) | 38.13 mph (61.36 km/h) |
| 45 mph (72.42 km/h) | 42.89 mph (69.03 km/h) |
| 50 mph (80.47 km/h) | 47.66 mph (76.7 km/h) |
| 55 mph (88.51 km/h) | 52.43 mph (84.37 km/h) |
| 60 mph (96.56 km/h) | 57.19 mph (92.04 km/h) |
| 65 mph (104.61 km/h) | 61.96 mph (99.71 km/h) |
| 70 mph (112.65 km/h) | 66.72 mph (107.38 km/h) |
| 75 mph (120.7 km/h) | 71.49 mph (115.05 km/h) |
| 80 mph (128.75 km/h) | 76.26 mph (122.72 km/h) |
| 85 mph (136.79 km/h) | 81.02 mph (130.39 km/h) |
| 90 mph (144.84 km/h) | 85.79 mph (138.06 km/h) |
| 95 mph (152.89 km/h) | 90.55 mph (145.73 km/h) |
| 100 mph (160.93 km/h) | 95.32 mph (153.4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2246 | 2609 | 2810 | 2934 | 3068 | 3163 | 3268 | 3392 | 3564 | 3736 | 3928 | 4080 | 4358 | 4663 | 4902 | 5055 | 5141 | 5457 | 5896 | 6852 |
Better Fuel Economy Factory Ratios Increased Power
