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Is there a formula for calculating the correct tire pressure when you change tire size? My Mazda came with P215/45R18 tires, and the recommended pressure is 36 psi. I just ordered winter tires that are P205/55R17. Do I need to account for the change in tire volume/contact patch area?
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Oct 25, 2019 03:38
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| # ¿ Apr 29, 2024 03:25 |
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Fabulousity posted:What specific Mazda is it? The information might be readily available in the car's manual if the 17" rim size is available in other trim levels. Check the specifications section in the manual, it's probably the last chapter. For example 2018 Mazda3s were sold with 16" and 18" wheel options and both sizes and the required pressures are provided in the manual. Mazda provides manual PDFs on their website if you don't have the physical one handy. Correct it is a Mazda 3. My winters are 17" which is right between the 16" and 18" sizes available from the factory so I can't use the manual.
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Oct 25, 2019 17:22
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How old is too old for winter tires? Bought a set of OE Mazda wheels today off Craigslist for $100 that came with some Hankook winter tires mounted to them. The tires look almost unused but the date code is 3711 (which I think means 37th week of 2011). I was originally going to swap my Nokian winter tires onto these wheels but now I'm wondering if I could just use the tires they came with. The seller had these stored in his barn/garage since he sold the car they were used with years ago.
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Nov 26, 2021 23:23
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