Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/40-15 | 245/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 24.65 (626) | 0.67 (17) 2.8% |
| Width inches (mm) | 11.22 (285) | 9.65 (245) | -1.57 (-40) -14% |
| Circum. inches (mm) | 75.32 (1913.23) | 77.43 (1966.64) | 2.1 (53.41) 2.8% |
| Sidewall Height inches (mm) | 4.49 (114) | 4.82 (122.5) | 0.33 (8.5) 7.5% |
| Revolutions per mile (km) | 841.17 (522.68) | 818.32 (508.48) | -22.84 (-14.19) -2.7% |
245/50-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.56 mph (33.09 km/h) |
| 25 mph (40.23 km/h) | 25.7 mph (41.36 km/h) |
| 30 mph (48.28 km/h) | 30.84 mph (49.63 km/h) |
| 35 mph (56.33 km/h) | 35.98 mph (57.9 km/h) |
| 40 mph (64.37 km/h) | 41.12 mph (66.17 km/h) |
| 45 mph (72.42 km/h) | 46.26 mph (74.44 km/h) |
| 50 mph (80.47 km/h) | 51.4 mph (82.71 km/h) |
| 55 mph (88.51 km/h) | 56.54 mph (90.98 km/h) |
| 60 mph (96.56 km/h) | 61.67 mph (99.26 km/h) |
| 65 mph (104.61 km/h) | 66.81 mph (107.53 km/h) |
| 70 mph (112.65 km/h) | 71.95 mph (115.8 km/h) |
| 75 mph (120.7 km/h) | 77.09 mph (124.07 km/h) |
| 80 mph (128.75 km/h) | 82.23 mph (132.34 km/h) |
| 85 mph (136.79 km/h) | 87.37 mph (140.61 km/h) |
| 90 mph (144.84 km/h) | 92.51 mph (148.88 km/h) |
| 95 mph (152.89 km/h) | 97.65 mph (157.16 km/h) |
| 100 mph (160.93 km/h) | 102.79 mph (165.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2082 | 2419 | 2605 | 2721 | 2845 | 2933 | 3031 | 3146 | 3305 | 3465 | 3642 | 3784 | 4041 | 4324 | 4546 | 4688 | 4768 | 5060 | 5468 | 6354 |
Better Fuel Economy Factory Ratios Increased Power
