Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 245/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 22.72 (577) | -0.51 (-13) -2.2% |
| Width inches (mm) | 7.48 (190) | 9.65 (245) | 2.17 (55) 28.9% |
| Circum. inches (mm) | 72.97 (1853.54) | 71.37 (1812.7) | -1.61 (-40.84) -2.2% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 3.86 (98) | -0.26 (-6.5) -6.2% |
| Revolutions per mile (km) | 868.25 (539.51) | 887.82 (551.66) | 19.56 (12.16) 2.3% |
245/40-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.56 mph (31.48 km/h) |
| 25 mph (40.23 km/h) | 24.45 mph (39.35 km/h) |
| 30 mph (48.28 km/h) | 29.34 mph (47.22 km/h) |
| 35 mph (56.33 km/h) | 34.23 mph (55.09 km/h) |
| 40 mph (64.37 km/h) | 39.12 mph (62.96 km/h) |
| 45 mph (72.42 km/h) | 44.01 mph (70.82 km/h) |
| 50 mph (80.47 km/h) | 48.9 mph (78.69 km/h) |
| 55 mph (88.51 km/h) | 53.79 mph (86.56 km/h) |
| 60 mph (96.56 km/h) | 58.68 mph (94.43 km/h) |
| 65 mph (104.61 km/h) | 63.57 mph (102.3 km/h) |
| 70 mph (112.65 km/h) | 68.46 mph (110.17 km/h) |
| 75 mph (120.7 km/h) | 73.35 mph (118.04 km/h) |
| 80 mph (128.75 km/h) | 78.24 mph (125.91 km/h) |
| 85 mph (136.79 km/h) | 83.13 mph (133.78 km/h) |
| 90 mph (144.84 km/h) | 88.02 mph (141.65 km/h) |
| 95 mph (152.89 km/h) | 92.91 mph (149.52 km/h) |
| 100 mph (160.93 km/h) | 97.8 mph (157.39 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
