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Snow tires or AWD: Which choice actually wins in winter driving?

Winter driving is not a theoretical problem for engineers, it is a daily calculation for anyone who has watched a car slide ...
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What's the Difference Between AWD and 4WD?

The difference between all-wheel drive (AWD) and four-wheel-drive (4WD) is a topic of confusion for many car, truck, and SUV buyers. Both systems send power to the wheels where traction is needed most ...