I switch all four to winters. If your in Edmonton then try bestway tires. They have a good selection of tires.

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MY X5 PICS:
http://www.xoutpost.com/members/bmwl...ms-my-bmw.html

RIDES
2005 BMW X5 4.4i Toledo Blue...RIP
Foose Edition S/C Ford F150 #0238
Chevrolet Trailblazer SS
Ford Mustang SVT Cobra