235/45R19 vs 235/40R19: Gas Mileage & Performance Comparison
* Below is a comparison table. Assuming 2 tires of the same manufacturer, material and tested on the same road conditions.
| 235/40R19 | 235/45R19 | |
| Wet/Snowy Roads | Better Traction | Reduced Traction |
| Rough Terrain | Reduced Stability | Smoother Ride |
| Handling/Steering | Less Responsive | Less Responsive |
| Gas Mileage | Good | Better |
| Road Noise | Quieter | Quieter |
| Cost | Less Expensive | More Expensive |
Can You Replace The 235/40R19 With The 235/45R19?
No, both tires have the same rim diameter, but the 235/45R19 has a bigger overall diameter than the 235/40R19 which is 3.39% (0.93-inch).
When you want to replace a different tire size, as a rule, for the rim diameter, you will need to be sure that your tires and rims are an exact match, e.g. a 235/40R19 tire will only fit on a 19″ diameter rim.
You Can check our tools and charts below to find your size:
