Originally Posted by AlterZgo
BMW runflats are expensive... much more expensive than buying non-runflats. So if you get rims and non-runflat tires and keep your stock rims/tires on the side, when it's time to turn the lease in, you just put back your stock rims and tires with 100% tread and you're good to go.
OTOH, if you use up more than something like 50% of the tread on your expensive, stock runflats, BMW would likely charge you for a set of new tires.
To my knowledge the M3 does not come with Run-Flat-Tires, it is the only reason I got back into a M3 (just came from a Z4 e89 and before that e85). If the M3 came with RFT I would have ordered the C6.3 AMG.