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Should the spare be the same size or is a slight difference ok?

deeve

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Jan 7, 2022
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Looking to upgrade to a slightly bigger tire from my stock 275/65R18 to 275/70R18 to get rid of that "my truck skipped leg day" look. On my past vehicles that were AWD I was always told the spare needs to match the rest because it will cause undue wear and tear on the drivetrain if used. Not sure if that is true or how long you could realistically run that way before any real damage is done. I am kind of debating on the best tire size for me. I do not think I want to go all the way up to 35" but maybe 295/70R18? SOOOO many choices. :LOL:

Anyway, to the question....is it a problem to keep the stock 275/65R18 and use it if needed when the other three tires are a bit larger? How big of a tire size difference is doable?

Thanks!
 
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