I am missing tool pointed out by arrow in the attached pic. What is this tool and it's use?

 

Guide wheel onto hub. Used for pccb brakes.

 

Actually - used for any of the Cayenne's. The wheel/tire combo can easily exceed 50lbs. With a stud to hang the wheel off when R&R'ing them - it can be a tad risky. The PCCB brakes deserve 2 of them - a new rotor is in the thousands of dollars.

 

Porsche calls it an assembly aid. As Don & Spyerx pointed out, this will avoid impact to the rotors but will also help save your painted calipers.

 

It's commonly called a wheel hanger. Mercedes uses them too. Install in the uppermost bolt hole, slide wheel over it into position and install bolts. Didn't need it when Porsche used wheel studs!

 

Very handy for heavy wheel mounting on any car with bolts not studs!

 

+1

I use 2 on all wheels, even with the cars that don't have PCCBs as it prevents the weight of the wheel from rotating the hub. I also place a 2x4 scrap on the floor below the tire so once it comes off the guide rods, it drops onto the 2x4 which is also much easier to slide across the garage floor or lift ramp to move the wheel/tire away from the body the rest of the way.

 

Thanks folks.

Looks like it is the "Wheel Hanger Tool, Aluminum, (Threaded Bolt for Wheel Assembly)" Part #: 9A7-007-733-00-OEM on Pelican parts website.

 

I now have 2 of them in the '11 CTT. That's because when I looked for it the first time - it wasn't where it lived in the 955 (photo above), instead they hid it under the top tray down in the 2nd tray (which requires jack removal to get to.) So I ordered one thinking it was missing. Found it a month or so later. I also use 2 to prevent wheel rotation, especially when putting tires on. The pin wants to rotate the hub so the pin is at the bottom. That's usually after I put the wheel on it at the top. Two pins eliminates that completely and helps keep fingers intact.

 

Max

Whilst you are in there
Pull the spare and check that is still alive
Inflate / Deflate more than once