Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/40-16 | 245/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.2 (538.4) | 26.72 (678.6) | 5.52 (140.2) 26% |
| Width inches (mm) | 6.5 (165) | 9.65 (245) | 3.15 (80) 48.5% |
| Circum. inches (mm) | 66.59 (1691.43) | 83.93 (2131.88) | 17.34 (440.45) 26% |
| Sidewall Height inches (mm) | 2.6 (66) | 3.86 (98) | 1.26 (32) 48.5% |
| Revolutions per mile (km) | 951.47 (591.21) | 754.89 (469.07) | -196.57 (-122.15) -20.7% |
245/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.21 mph (40.57 km/h) |
| 25 mph (40.23 km/h) | 31.51 mph (50.71 km/h) |
| 30 mph (48.28 km/h) | 37.81 mph (60.85 km/h) |
| 35 mph (56.33 km/h) | 44.11 mph (70.99 km/h) |
| 40 mph (64.37 km/h) | 50.42 mph (81.14 km/h) |
| 45 mph (72.42 km/h) | 56.72 mph (91.28 km/h) |
| 50 mph (80.47 km/h) | 63.02 mph (101.42 km/h) |
| 55 mph (88.51 km/h) | 69.32 mph (111.56 km/h) |
| 60 mph (96.56 km/h) | 75.62 mph (121.71 km/h) |
| 65 mph (104.61 km/h) | 81.93 mph (131.85 km/h) |
| 70 mph (112.65 km/h) | 88.23 mph (141.99 km/h) |
| 75 mph (120.7 km/h) | 94.53 mph (152.13 km/h) |
| 80 mph (128.75 km/h) | 100.83 mph (162.27 km/h) |
| 85 mph (136.79 km/h) | 107.13 mph (172.42 km/h) |
| 90 mph (144.84 km/h) | 113.44 mph (182.56 km/h) |
| 95 mph (152.89 km/h) | 119.74 mph (192.7 km/h) |
| 100 mph (160.93 km/h) | 126.04 mph (202.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1921 | 2232 | 2403 | 2510 | 2624 | 2706 | 2796 | 2902 | 3049 | 3196 | 3360 | 3491 | 3728 | 3989 | 4194 | 4324 | 4398 | 4668 | 5044 | 5861 |
Better Fuel Economy Factory Ratios Increased Power
