NEVER SAW THIS BEFORE
 

Ok, saw a tire set up that had 2 valve stem per rims. Can someone explain what and where this setup comes from. 36" slick with a inner liner and can set the 2 pressures different.

maybe it is a kind of beadlock ring that goes inside of the tire. i know there is something like that for off roaders since beadlocks arent street legal.

here is the link for it if your interested in checking it out.


http://www.staunproducts.com/harry_home.php

On circle track rims there are often two valve stem holes, one for the schrader valve to fill the tire, and one that holds an adjustable pressure relief valve for when the tires get hot and try to expand.
The relief valve leaks out the excess air pressure to keep the desired pressure level.
It is more common now though to use nitrogen instead of air in these race tires, because nitrogen stays cool and does not expand near as much as air does.

its prolly a staun inner bead lock real big right now in off road word and aust. able to have a dot legal beadlock (beadlock rims not legal on street) www.staunproducts.com