Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-15 | 245/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.77 (553) | 22.72 (577) | 0.94 (24) 4.3% |
| Width inches (mm) | 8.46 (215) | 9.65 (245) | 1.18 (30) 14% |
| Circum. inches (mm) | 68.4 (1737.3) | 71.37 (1812.7) | 2.97 (75.4) 4.3% |
| Sidewall Height inches (mm) | 3.39 (86) | 3.86 (98) | 0.47 (12) 14% |
| Revolutions per mile (km) | 926.35 (575.6) | 887.82 (551.66) | -38.53 (-23.94) -4.2% |
245/40-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.87 mph (33.58 km/h) |
| 25 mph (40.23 km/h) | 26.08 mph (41.98 km/h) |
| 30 mph (48.28 km/h) | 31.3 mph (50.38 km/h) |
| 35 mph (56.33 km/h) | 36.52 mph (58.77 km/h) |
| 40 mph (64.37 km/h) | 41.74 mph (67.17 km/h) |
| 45 mph (72.42 km/h) | 46.95 mph (75.56 km/h) |
| 50 mph (80.47 km/h) | 52.17 mph (83.96 km/h) |
| 55 mph (88.51 km/h) | 57.39 mph (92.36 km/h) |
| 60 mph (96.56 km/h) | 62.6 mph (100.75 km/h) |
| 65 mph (104.61 km/h) | 67.82 mph (109.15 km/h) |
| 70 mph (112.65 km/h) | 73.04 mph (117.54 km/h) |
| 75 mph (120.7 km/h) | 78.25 mph (125.94 km/h) |
| 80 mph (128.75 km/h) | 83.47 mph (134.34 km/h) |
| 85 mph (136.79 km/h) | 88.69 mph (142.73 km/h) |
| 90 mph (144.84 km/h) | 93.91 mph (151.13 km/h) |
| 95 mph (152.89 km/h) | 99.12 mph (159.52 km/h) |
| 100 mph (160.93 km/h) | 104.34 mph (167.92 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
