mw9

iTrader: (51)

What are you track guys running and why. What are the benefits of each and what do you prefer?

halfrice

iTrader: (30)

rubber, cheap easy to replace less likely to snap when hit

RandomHer0

iTrader: (9)

Rubber, was told by my wheel guy metal tend to leak. Whether there is merit I dunno.

racerbob4

iTrader: (8)

We race on Enkei RPF1's and they come with short blue aluminum valve stems. They are short enough that they can't be sheared off by contact and are a very slight weight saving.

ThreeFiveZero Z

iTrader: (23)

I used the aluminum ones that came on my enkeis and they ended up leaking after 6 months. Plain old rubber stems for me now since we mount my wheels and tires in house.

terrasmak

iTrader: (8)

I run the blue ones that came with my Enkei wheels, guess i will swap out when they leak.

bbs350z

iTrader: (85)

yea my rpf's have the factory metal ones. no leaking yet

RandomHer0

iTrader: (9)

Guess there is merit

jnathan68

iTrader: (29)

My wheel guy (race shop) recommends using the rubber ones

dkmura

iTrader: (64)

Hmmm...I also use Enkei RPF-1s and the short blue valve stems. With the lightweight R-compound tires (Hoosier R6 or Goodyear RS) currently in use, the tires themselves consistently bleed down, not the valve stems.

Whether it's rubber or metal, the key is having a valve stem that is short enough not to get torn out in any light metal-to-metal incident. If a tires does go down, it's because of heavy contact and probably some actual wheel damage has occurred.

ThreeFiveZero Z

iTrader: (23)

It probably isnt your tires. I had the same problem, switched to rubber stems. Problem fixed.