Quote:
Originally Posted by BMWCCA1
I was surprised to see the first post in this thread comparing different brands rather than star to non-star tires from the same brand.
I can't say if it's still relevant today but years ago when the E34 was the current 5-series, a good customer came to me after replacing his original Michelin MXV-4s with the "same" tire without the star from the local Michelin dealer. He was complaining about the change in handling and so we compared the still-original BMW spare tire with the new store-bought Micheins. Right there on the sidewall showed the non-star tire was constructed with two-fewer plies in its carcass than the OE star version. Obviously there was a noticeable difference in sidewall flex which resulted in a larger slip angle. And these tires, other than the star, were the same spec, brand, and model. 
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I've never had a BMW before and just ordered a M240i X-drive a few weeks ago. On previous "sporty" vehicles I've owned when replacing tires I've always gone with XL (extra load) rated tires as felt they offered additional sidewall strength that resisted deflection more, and then also offered some additional protection to the lower profile tire and the rim it was mounted on from ass-puckering potholes that are not particularly uncommon in later winter into spring in my area due to highly the variable weather conditions (and then sometimes just pop up in summer for whatever reason).