Quote:
Originally Posted by m5james
Wide tires w/ small sidewalls are great on dry pavement, but skinny and tall sidewalled tires are the key to being able to drive around in deep snow...look at images of rally cars in the snow as they have the skinniest damn tires w/ big sidewalls.
|
That's why it's impossible to find winter tires that fit the rears on the stock 4.8is setup. It's simple physics: pressure=force/area. With wide tires, you're splitting up the same weight of the car on more surface area, which is not what you want in the snow. For greater traction, you want the same weight on less surface area, so you want skinny tires. However, I'm assuming BMW recommends the 255/55s because it's a good balance between being decently skinny, compared to the stock tires, yet wide enough so that you don't lose that much performance during dry conditions, especially because winter tires have softer rubber than all-season or summer compounds.
12-10-2010, 03:43 AM
Threaded Mode
