Originally Posted by zipstic
The rear tires will be slightly stretched, but it won't change the rolling diameter, only the width - which is good in this case since you want skinnier tires for snow.
Here is my thought process:
- Tires are stretched when the bead is pulled further out.
- This extra width comes from deflection of the sidewall causing it to be a less steep angle.
- A sidewall at an angle less than one on a narrower rim would be shorter in overall height.
- The shorter sidewall height would equate to a smaller rolling diameter.
This smaller rolling diameter is what worries me.