Hey all, need some advice. I am turning in my x may 1st, but unfortunately need new tires now. A local tire shop told me to put on some cheap set of tires for 700 bucks and that bmw would accept them at lease turn in (gdyr eagle ls2 p255/55r18) is this really ok ? Any opinions are welcome

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2011 50i BS/Black Nevada
(gone) 2007 4.8i AW/Tobacco