So I just noted my spare has two air-up valves. What's the deal?
Why?

 

Its twice as good !

 

Badda booom.

Well, leaving on a trip from Boise Idaho to SoCal tomorrow and just in case I thought I'd check it. Twice as good don't help but thanks for the info...

 

Sorry , I have looked at the two valves and scratched my head more than once .
All I got is , its twice as good .
I don't recall ever seeing two valves on any other ...

 

on my last 2 cars i carried tire sealant/compressed air & ran without a spare....and i do the same with 964.
i do not expect to have a flat & if i do i expect new sealant systems to work as effectively as my 19yr old spare!

 

As I recall, VW used to power the windshield washer, or some such, with the pressure from the spare tire. Topping up the spare required disconnect and reconnect. Perhaps this dual valve spare was designed to allow for topping up without disconnecting the down stream system; which, of course, we don't have!

 

Then again, our spares don't even have air in them; doh!

I guess I should just go back to sleep . . .

 

I believe that it is to aid in re-collapsing the spare once it has been used. It states in the manual that this can take up to several Hrs. for the tire to return to it's original dimension.

Another, perhaps more poignant question: Has anyone actually tried to store the flat Road wheel in the 'Frunk'?

My car has oem 16" Design 90 wheels and it doesn't look to me that it would fit. Others with larger diameter aftermarket wheels may have even bigger (no pun intended) issues. I know there's always the back seat. But maybe owners should carry either an extra large poly bag (like the Leaf type) which the wheel will fit into and thereby not soil the car's interior with dirt, sand and brake dust, or carry a padlock and chain so the flat wheel can be secured to a sign or post so you can return for it later. Rambling thoughts.

Cheers!

 

Porsche included a bag in the trunk for that very purpose. My "tire" bag is still nicely folded and sits next to the tire, extra pulley belt, tool kit and pump. All standard Porsche items that came with the car during delivery.

It's crazy to think that if you get a rear flat, Porsche directs you to remove the front tire, place it on the rear, put the spare on the front, and then put the rear wheel in the tire bag...I'm calling AAA!

 

yeah, but it makes sense. I'd rather have a front tire support the weight of the rear than to have the skinny spare support it.

So, sounds like maybe that extra valve is to release the air when done?

 

I don't buy it , one valve will let out all of the air just fine . If you are trying to hold the two valves open by hand , that would be uncomfortable . If you unscrew one valve and leave it out while the tire shrinks back to its storeable size ...

At the end of the deflating the air flow is not so great that two valves would be called for . And its that last bit of folding up that takes time from my experience .

 

on my 77 911S I put a rope around the spare with a piece of pipe and twisted it tight. The air comes out alot faster that way.

 

You realize the spare is an integral part of front end protection?

 

thanks - i do & its there....just do not depend on it, nor want to fuss in the event of a puncture

 

I thought the 90 litres of fuel was for that...............