I do have the 296 19'' on the e89 35i, such a headache, I even bought a 5th wheel to have it standby for substitute when the others broken... in 2 years time they cracked more than 12 times and repaired all. Last month I bought same rft tyres, again repaired all 5 wheels and 2 days ago I was left stranded by another crack at some mountain resort area. That was it! The car was moved by truck to the dealer in Athens (Greece). Tommorow I am ordering either the 276 or the 325m 18'' with non-rft tyres and hope I get rid of this mess...
http://e89.zpost.com/forums/showthread.php?t=642425