I think it really depends on the person. My X3 came with 19" all season run flat tires but I recently installed a set of 18" non-run flat winter tires and I didn't really notice any difference in ride stiffness. The only reason I when with non-run flats for winter tires is there is a much better selection of tires.
2012 X3 35i | Deep Sea Blue | Oyster |
Packages | Sports | Cold Weather | Cold Weather 2 | Premium | Technology | Premium Sound