Double Valve stems - why

[MFL]

Hi,

i'm just looking for new wheels for my Bf XR8 and came across these in FB Market - why do you have 2 valve stems ? or is it something else .


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[zipping]

You use one stem to bleed off and exchange ambient air for nitrogen which is put in other stem.

[Charliewool]

I thought it was so you can blow up both front tyres from the one side of car?

[rare ss]

You could fit one with a deflator (to drop the pressure out when racing) to maintain the same pressure then top up post race

[rare ss]

It got the better of me so I asked Dr Google.. turns out it's just a flex

[aussiblue]

It's not a JJD Twin tyre rim is it:




Also see https://forum.retro-rides.org/thread...n-tyres-on-car

[rare ss]

I remember a burnout comp in the early naughties, there was a very tidy XD sedan on the pad with a pair of JJD twin tyres on the rear, looked pretty trick when it got to the belts and it was sending out x4 sets of sparks out the back (was at night for extra effect)

[GCRXR6]

Originally Posted by zipping

You use one stem to bleed off and exchange ambient air for nitrogen which is put in other stem.

No problem using one. Easy to run 78% N.