Quote:
Originally Posted by Resipsa
Hi everyone! First-time poster here. I am moving to New England from the Bay Area and need all-season tires for my 2024 540i xdrive with M-Sport package (M brakes, etc.). Currently it has a factory staggered summer tire fitment with 245/35R21 in the front and 275/30R21 in the rear. I cannot find any set of all-season tires in these sizes (in fact, I couldn't find all-season tires for 275/30R21 at all). My local dealership suggested that I swap the front to 255/35r21 and the rear to 275/35r21, which would give me more all-season tires options. Would this be an okay setup in terms of handling and safety? Any better setup available?
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Bad advice from the dealership, I think. You want the overall diameter (or revs per mile) of front and rear to be close -- within one percent or so. The dealership's suggestion varies from that standard.
I know having an extra set of wheels & tires can be a hassle, but tturedaider's advice is spot on for your New England location. An alternative would be to start over with a set of 19s or 20s. Four wheels and four performance all-season or all-weather tires.