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tyre sizes 318is

  1. Tyres and Alloy Wheels Forum
    hi all, currently my m3 wheels have 225/45/17'S all round, im led to believe this is wrong, im suffering with bad understeer, there are budgets on the front and decent ish tyres on the back at the moment... what tyre size should i be using, and what will fit the rims?! also.. what tyre...