No need to worry about confusing tire sizing, we're here to simplify for you. In general, if you're not experienced with tires and are looking to buy new ones for your vehicle, any online or physical tire store can look up the right size for your vehicle, so let the experts take care of it to be safe. That said, it's still helpful to know how tire sizing works as it is basic car maintenance knowledge that any driver or consumer should be familiar with.
Let's start with an example size: 275/40R17 98W
What does the tire size mean?:
Now you may see a slight difference in how tire sizes are indicated on a tire or on the door jamb of vehicle but typically you'll see something similar. This is applicable to passenger vehicles, format will vary with commercial or other types of vehicles.
All aspects are important for any consumer tire, however you may look more closely at some aspects for certain situations. For instance, if you have a performance vehicle, speed rating may be something to look at carefully, while there may be tires that "fit" the vehicle, they may not all meet the recommend speed requirements from the car manufacturer. Another example is a vehicle setup for towing or RV use, you may look extra closely at load index. It's always important to follow the vehicle manufacturer recommendations for your use.
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