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997.2 – Evidence of grease like substance on Front wheel inner rims.

PAG ZERO1

PAG ZERO1

New member
[FONT=calibri"]Hi Guy’s,[FONT=verdana,geneva"]
[FONT=calibri"]Just wondering if anyone else has had a similar experience, I only use a pressure wash on the wheel arches and wheels and have noticed that after I take the car out for a spin to completely dry off the brakes/discs that there are small traces of a grease like substance on the front wheel inner rims. So any thoughts on where this could be coming from as the only area that I believe it could be from are the front bearings, but as these are sealed unless the back pressure of the wash is causing the grease loss, I do however have some concerns if this is the case. I have not taken the wheels off yet to have a closer look but will do so when the weather improves.[FONT=verdana,geneva"]
[FONT=calibri"]Any thought’s ?[FONT=verdana,geneva"]
[FONT=calibri"] [FONT=verdana,geneva"]
[FONT=calibri"]Pete[FONT=verdana,geneva"]
 
I am certain its not from bearings but only from the discs as the car is driven and the centrifugal (long word for 5.21 am[:)]) force flings any dirt etc onto the inner rims.
I get the same marking on all four inner rims after washing my wheels.

 
Yep, it's brake dust.
Despite the amount of holes in the discs, some brake dust is held in water which sits in the top of the disc and of course, gets spun out as soon as the wheel starts turning.
I'd advise two things:
When using a jet wash, get in close to the disc as this washes out brake dust from between the outer and inner faces, and also clears out the holes as brake dust can clog them up, causing overheating / warping.
After you've finished, roll the car backwards and forwards a few times. This will clear the excess water out of the disc, and the wheel rim can be rinsed out again. Obviously, being careful not to get water inside the disc or you're back at square one again. A watering can is ideal for this as it can be more direct, or use a damp sponge to clear off the excess grime.
 
Hi Guy's,
thanks for your replies and you are correct, I took the car down to the local Porsche dealership and spoke/showed the work shop manager, who confirmed its a combination of brake dust, alloy cleaning fluid/water which is trapped in the vented discs and then gets centrifugal out when the wheels start turning.
thanks to all
regards

Pete

 
Just a small tip from washing motorcycles. After washing my cars I use my cordless leaf blower to remove static water it's particularly effective on brake discs and body trim like lights door handles front grills etc. There are specialist warm air driers available but they are bulky and I already had the Bosch leaf blower, worth a try and you can always use it in the garden.
 
michaelfrith said:
I already had the Bosch leaf blower,
Click to expand...


I have a Black and Decker blower ...... would it still be OK to use on a Porsche, or should I go for OE ? [:D]
 
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