x drive is iffy you wanna be really careful about your selection of make. stick with runflats no matter what you choose. i have pirelli sottozero runflats with the 19inch stock wheels. i tried the new michelin alpin nonrunflat didnt work. the dsc is very finely tuned to hard rubber. dont go to soft and stay with the size of the original tire.
all season i dont know if they make em but you may as well do a winter and a summer set up.
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