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I know someone with a similar issue. It makes a hollow sound like when you bounce one of those red dodgeballs off someone's head.
2020, 22" wheels with the Conti's. Lots of concrete roads in Houston so its a constant hollow grinding sound. If you just smack the tire with your hand it sounds hollow. Super weird.
I'm thinking this is a tire issue. That is not normal. If anything, a GT summer run flat tire should be rock hard when you hit it.
Looks like BMW makes a Pirelli tire in that size. I'm going to tell my friend to demand the dealer changes to the Pirelli's. The sound ain't focking normal...or at least not acceptable for a luxury SUV.
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2018 F30 320iX Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
2000 E36/7 Z3 Steel Blue
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