Question for Gary

[civic34]

I have a 2007 550i sport and want Dunlop M3 Wintersports (245/40/18 front and rear) to mount on a set of wheels I already own. My question is this...do you recommend non rf"s for a car that came with them? Second, when I go through the checkout process on tirerack.com, I cant choose if I want rf's or not. Does that mean they'll send me fun flat's since I have entered my car info? Any help would be appreciated!!

[Gary@Tirerack]

Dunlop doesn't make the M3 in a runflat in that size, so you would get the non-runflat version.

[Starab]

Have 2008 528 xi AS(non RFT) Talked to bmwusa, and some dealers 'All said NO'
Do I need tire rotation ?
if so ? every ..... miles