Aftermarket (non-runflat) 19's still run nicer than the (heavier) runflat OEM 17's on stock alloys. These specific Vossens weigh equal to the OEM 17" winter package I just removed. The size of the wheel doesn't change too many characteristics, (as long as it's not an excessively heavy wheel). The wider, more squared-off tires might have a tendency of tram-lining on the roads/highways with ruts, but bad alignment is more to blame for that.
My YouTube video
-- RANDY SPARRE --