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Car tire (reading the size)
Also called: tire, automotive tire
The numbers on the sidewall (for example 225/45R17) show the width, aspect ratio and wheel size.
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When you'd need this
- I don't know what the numbers on the side of my tire mean
- I was told it's time for new tires
Measure and check before you buy
- Sidewall size numbers
- Load index and speed rating
- Week of manufacture
- Size specified for your vehicle (check with a shop)
- Front and rear sizes
- Wheel compatibility
Safety: Professional service recommended (driving safety part, have a shop do it).