Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 245/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 26.72 (678.6) | 1.28 (32.4) 5% |
| Width inches (mm) | 5.31 (135) | 9.65 (245) | 4.33 (110) 81.5% |
| Circum. inches (mm) | 79.93 (2030.1) | 83.93 (2131.88) | 4.01 (101.79) 5% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.86 (98) | 0.14 (3.5) 3.7% |
| Revolutions per mile (km) | 792.74 (492.59) | 754.89 (469.07) | -37.85 (-23.52) -4.8% |
245/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21 mph (33.8 km/h) |
| 25 mph (40.23 km/h) | 26.25 mph (42.25 km/h) |
| 30 mph (48.28 km/h) | 31.5 mph (50.7 km/h) |
| 35 mph (56.33 km/h) | 36.75 mph (59.15 km/h) |
| 40 mph (64.37 km/h) | 42.01 mph (67.6 km/h) |
| 45 mph (72.42 km/h) | 47.26 mph (76.05 km/h) |
| 50 mph (80.47 km/h) | 52.51 mph (84.5 km/h) |
| 55 mph (88.51 km/h) | 57.76 mph (92.95 km/h) |
| 60 mph (96.56 km/h) | 63.01 mph (101.4 km/h) |
| 65 mph (104.61 km/h) | 68.26 mph (109.85 km/h) |
| 70 mph (112.65 km/h) | 73.51 mph (118.3 km/h) |
| 75 mph (120.7 km/h) | 78.76 mph (126.75 km/h) |
| 80 mph (128.75 km/h) | 84.01 mph (135.2 km/h) |
| 85 mph (136.79 km/h) | 89.26 mph (143.65 km/h) |
| 90 mph (144.84 km/h) | 94.51 mph (152.1 km/h) |
| 95 mph (152.89 km/h) | 99.76 mph (160.55 km/h) |
| 100 mph (160.93 km/h) | 105.01 mph (169 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
