Hi, i have a 2006 bmw 530xi AWD, recently i lowered my car with H & R springs. The problem has always been there the first day i got my car. Im a pretty hard driver, i speed alot and in NY theres pot holes and bad roads. Everytime i hit a hole, few days later my flat tire light comes on. Now with the spring the car feels alot more bumpyier.
Help.. how can i stop my wheels from cracking? ohh yeah. .i got the sports 18" wheels OEM.
Should i go to 17" ?
Is there a different spring or coil over system to get.. so i can have a smoothier ride car?

Please help. thank you!!

 

............... er, get an X5

 

There are no other springs or coilovers for the xi available. Admittedly, the ride is bouncy and bumpy with the H&R's, my only regret. I have not had any wheel issues here in Pittsburgh, and we are the pothole capital of the US. I have 19" summer CSL replicas and 17" 138's for winter....no cracking issues on either, and I've hit quite a few holes with each set.

Your OEM 18's should not be cracking with typical potholes, so I think BMW should be held somewhat accountable. You could buy wheel/tire insurance. If it continues to be an issue, you should go back to the OEM springs. I've thought about doing it myself to recapture the smoother ride. However, I won't do it since my 19's would look stupid.