I go through rears every 9k miles runflat or not and that is all I expect from a summer tire. My DOT competition tires were good for around 5k miles!
2009 335i CoupeLBM - Black Dakota/Glacier aluminum-6spd|Nav|M-Sport|Premium|Logic7|Heated Seats|CA|BMW Performance Suspension & M3 Control Arms|M3 lip spoiler
2009 X5 3.0-AW-Black Dakota/Bamboo|Premium|Tech|Cold Weather|Ipod Rear Climate|
07 335 coupe - Sold
07 X3 - Sold