Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/70-18 | 225/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.44 (646.2) | 26.09 (662.6) | 0.65 (16.4) 2.5% |
| Width inches (mm) | 5.31 (135) | 8.86 (225) | 3.54 (90) 66.7% |
| Circum. inches (mm) | 79.93 (2030.1) | 81.95 (2081.62) | 2.03 (51.52) 2.5% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 3.54 (90) | -0.18 (-4.5) -4.8% |
| Revolutions per mile (km) | 792.74 (492.59) | 773.12 (480.39) | -19.62 (-12.19) -2.5% |
225/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.51 mph (33 km/h) |
| 25 mph (40.23 km/h) | 25.63 mph (41.25 km/h) |
| 30 mph (48.28 km/h) | 30.76 mph (49.51 km/h) |
| 35 mph (56.33 km/h) | 35.89 mph (57.76 km/h) |
| 40 mph (64.37 km/h) | 41.02 mph (66.01 km/h) |
| 45 mph (72.42 km/h) | 46.14 mph (74.26 km/h) |
| 50 mph (80.47 km/h) | 51.27 mph (82.51 km/h) |
| 55 mph (88.51 km/h) | 56.4 mph (90.76 km/h) |
| 60 mph (96.56 km/h) | 61.52 mph (99.01 km/h) |
| 65 mph (104.61 km/h) | 66.65 mph (107.26 km/h) |
| 70 mph (112.65 km/h) | 71.78 mph (115.51 km/h) |
| 75 mph (120.7 km/h) | 76.9 mph (123.76 km/h) |
| 80 mph (128.75 km/h) | 82.03 mph (132.02 km/h) |
| 85 mph (136.79 km/h) | 87.16 mph (140.27 km/h) |
| 90 mph (144.84 km/h) | 92.28 mph (148.52 km/h) |
| 95 mph (152.89 km/h) | 97.41 mph (156.77 km/h) |
| 100 mph (160.93 km/h) | 102.54 mph (165.02 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1967 | 2286 | 2461 | 2570 | 2687 | 2771 | 2863 | 2972 | 3123 | 3273 | 3441 | 3575 | 3818 | 4086 | 4295 | 4429 | 4504 | 4780 | 5166 | 6003 |
Better Fuel Economy Factory Ratios Increased Power
