Quote:
Originally Posted by MightyMouseTech
Actually not quite correct. The only thing that will change the PSI on the road is the PSI in the tire (or the weight on the tire) Changing the size of the tire will not. It will only change the shape of the contact patch. Running 40 PSI in the tires will have the same size of contact patch if you are running a 205 or a 255.
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Yes, you are correct on that. I meant the shape of the contact patch. You do not want a wide cp, but a skinny cp to punch thru the snow. There is a reason why BMW recommends a 205 tire for winter.
The only car I've seen BMW recommend a 245 snow/winter tire is on, is the 5er GT with the V8tt engine.
