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Tire size

Discussion in 'Tires & Wheels' started by Jonny_rotten, November 29, 2018.

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  1. Jonny_rotten

    Jonny_rotten New Member

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    I’ve made a little error and I’m wondering if it needs to be rectified. My 2017 Ex had 20” wheels with summer tires and I’ve ended up buying 245/60/18 tires to work with the 18” police interceptor steel wheels. The difference in diameter is -1.3%. Of course I’ve just realised that I should have bought 235/65/18 and the difference would have been 0%. Is it a big deal? I’m pretty annoyed at myself.....
     
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  3. MrQ

    MrQ Take the Bull by the Horns Elite Explorer Moderator Emeritus

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    You can't bring the tires back in and get the right ones?

    -1.3% is a really small deviation and would probably only affect your speedometer by 1-2 mph at higher speeds. At lower speeds it would be negligible.

    My deviations are usually -5% to -7% when you jump from 29's to 33's, haha.
     






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