How are the oem 18" wheels/tires in light snow/icy conditions? I'm thinking of using them during the winter to replace my 20" M wheels since they come with summer tires. I don't need to be able to drive in 10"+ of snow, just 2-4 inches.....My last 12 X5 came with 20" wheels and even-though they were all-season they were pretty bad, I couldn't drive the car with 1 inch of snow
