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Thread: Recommended tyre size

  
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    cornishtaz's Avatar
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    Recommended tyre size

    After some tyre advice to confirm my initial thoughts

    My wifes Astra G currently has 225/35/18 fitted to a 8Jx18 40 offset wheels and we're currently getting a bit of arch rub at the rear.

    My thoughts are that the tyres should be 215/35/18 is this correct and would a 215 tyre be ok on a 8J rim.

    If I changed to the narrower tyre would this eleaviate the problem of the arch rubbing? Would this also help as I've got plans to drop the car by 30mm

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    just noticed placed in wrong section. Can admin pse move thanks

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    I don't think it will as the tyre width as you called it, is actually the tread width. With that width, your tyres will be stretched to fit the rim and will expose your rims a little more and will lower the side wall size (As the side wall is a percentage of the width of the tyre EG: For the 225 tyre, with sidewall height will be: 78.75mm and the 215 tyre will be: 75.25 (For half a mill, It wont be noticeable))

    I think its more likely to be the offset is too large (I think its meant to be 42 offset? Correct me if im wrong) and I'd advise you that you get 42 offset wheels if you do plan on lowering it UNLESS you are willing to roll the arches a little

    HTH

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