I nearly got stuck trying to get up hills enough time in the E46 that I'm squarely in the camp that Front engine + RWD + open diff is unacceptable for a snow vehicle. Slushy salty driving, sure. But real snow. No thanks.
I know it can work OK if you get good snow tires, but even then. As the tires start to wear and the grip starts to degrade slightly, you creep closer and closer to stuck-land.
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