Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/60-15 | 245/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.98 (609) | 22.72 (577) | -1.26 (-32) -5.3% |
| Width inches (mm) | 7.48 (190) | 9.65 (245) | 2.17 (55) 28.9% |
| Circum. inches (mm) | 75.32 (1913.23) | 71.37 (1812.7) | -3.96 (-100.53) -5.3% |
| Sidewall Height inches (mm) | 4.49 (114) | 3.86 (98) | -0.63 (-16) -14% |
| Revolutions per mile (km) | 841.17 (522.68) | 887.82 (551.66) | 46.65 (28.99) 5.5% |
245/40-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.95 mph (30.5 km/h) |
| 25 mph (40.23 km/h) | 23.69 mph (38.12 km/h) |
| 30 mph (48.28 km/h) | 28.42 mph (45.74 km/h) |
| 35 mph (56.33 km/h) | 33.16 mph (53.37 km/h) |
| 40 mph (64.37 km/h) | 37.9 mph (60.99 km/h) |
| 45 mph (72.42 km/h) | 42.64 mph (68.62 km/h) |
| 50 mph (80.47 km/h) | 47.37 mph (76.24 km/h) |
| 55 mph (88.51 km/h) | 52.11 mph (83.86 km/h) |
| 60 mph (96.56 km/h) | 56.85 mph (91.49 km/h) |
| 65 mph (104.61 km/h) | 61.58 mph (99.11 km/h) |
| 70 mph (112.65 km/h) | 66.32 mph (106.73 km/h) |
| 75 mph (120.7 km/h) | 71.06 mph (114.36 km/h) |
| 80 mph (128.75 km/h) | 75.8 mph (121.98 km/h) |
| 85 mph (136.79 km/h) | 80.53 mph (129.61 km/h) |
| 90 mph (144.84 km/h) | 85.27 mph (137.23 km/h) |
| 95 mph (152.89 km/h) | 90.01 mph (144.85 km/h) |
| 100 mph (160.93 km/h) | 94.75 mph (152.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2259 | 2625 | 2827 | 2952 | 3086 | 3182 | 3288 | 3413 | 3586 | 3759 | 3951 | 4105 | 4384 | 4692 | 4932 | 5086 | 5172 | 5490 | 5932 | 6893 |
Better Fuel Economy Factory Ratios Increased Power
