No kidding.The pressure should vary as the tires heat up. That's a design feature
Regards
![brow :brow :brow](https://forums.bmwmoa.org/images/smilies/brow.gif)
I'll ad that I don't agree that "friction" is "a design feature", I'm(we all are) betting our collective lives on it being there when we need it!!!!!!!!!!!!!!!!!!!!!
![bow :bow :bow](https://forums.bmwmoa.org/images/smilies/bowdown.gif)
Regards !