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I currently have 245/35/20 and 275/30/20 (Goodyear run flats which are awful) the. oem 759i 20s
I can't wait to get PS4S on the big question is can I go to 255/35/20 and 285/30/20?
I've seen calculation where the diameter variance is only 1%
my concern would be is the 8J sized front wheel limited to 245 and no more?
thanks
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