My wife was saying it is crazy for anyone in CA to need to run different tires for winter. But trust me - it's not crazy. If these wide summers are this bad in the rain, they would be completely useless up in the mountains in the snow zone. It would be crazy not to have winters on a car like this for my snow driving during ski season. It may be a bit over the top that I own winter tires for both the X5 and S4, but I figure once you have the wheels the tires are a wear item and makes little difference cost-wise if you are wearing out summer tires or snow tires - they cost about the same. Actually, the snows are at least 30% cheaper than summer tires for the 4.6is, but about the same on the S4 since I run stock sizes in both case. And I paid about $600 each for the 2 winter wheel sets, so that is not much money in the grand scheme of things either.

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2003 4.6is - SOLD
2003 M5 Imola
2008 Mini Cooper S
2011 Mazda CX9