Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-15 | 245/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.97 (583.5) | 22.72 (577) | -0.26 (-6.5) -1.1% |
| Width inches (mm) | 8.86 (225) | 9.65 (245) | 0.79 (20) 8.9% |
| Circum. inches (mm) | 72.17 (1833.12) | 71.37 (1812.7) | -0.8 (-20.42) -1.1% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 3.86 (98) | -0.13 (-3.25) -3.2% |
| Revolutions per mile (km) | 877.93 (545.52) | 887.82 (551.66) | 9.89 (6.15) 1.1% |
245/40-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.78 mph (31.83 km/h) |
| 25 mph (40.23 km/h) | 24.72 mph (39.79 km/h) |
| 30 mph (48.28 km/h) | 29.67 mph (47.74 km/h) |
| 35 mph (56.33 km/h) | 34.61 mph (55.7 km/h) |
| 40 mph (64.37 km/h) | 39.55 mph (63.66 km/h) |
| 45 mph (72.42 km/h) | 44.5 mph (71.61 km/h) |
| 50 mph (80.47 km/h) | 49.44 mph (79.57 km/h) |
| 55 mph (88.51 km/h) | 54.39 mph (87.53 km/h) |
| 60 mph (96.56 km/h) | 59.33 mph (95.49 km/h) |
| 65 mph (104.61 km/h) | 64.28 mph (103.44 km/h) |
| 70 mph (112.65 km/h) | 69.22 mph (111.4 km/h) |
| 75 mph (120.7 km/h) | 74.16 mph (119.36 km/h) |
| 80 mph (128.75 km/h) | 79.11 mph (127.31 km/h) |
| 85 mph (136.79 km/h) | 84.05 mph (135.27 km/h) |
| 90 mph (144.84 km/h) | 89 mph (143.23 km/h) |
| 95 mph (152.89 km/h) | 93.94 mph (151.18 km/h) |
| 100 mph (160.93 km/h) | 98.89 mph (159.14 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
