One went missing - why / how - I do not know!
I went on-line and bought some (cheap as chips). They are described as . . . . . . .Made of quality aluminium they will fit any standard valve stem and feature a rubber seal on the inside for further protection from dirt which ensures the valve is clean when air is needed. and a domed gel top to protect the logo.
I have since read posts on another forum talking about metal dust caps 'welding' themselves to the fitting!!! Is that just the steel caps or does that happen with aluminium also?
Tyre Dust Covers
I had a Nissan GTR with very nice hex valve covers. One was stiff so I put a small spanner on it and the valve stem snapped. I'm fairly certain it was an aluminium cap.
A dab of grease would prevent the problem
A dab of grease would prevent the problem
2017 Macan GTS Carmine Red
2005 Boxster S Artic Silver
2005 Boxster S Artic Silver
^^^^ Never had this problem and have been using them for years on all our cars.
I do check the pressures every fortnight though with a dial guage. So they would not have the time anyway to get stuck.
I do check the pressures every fortnight though with a dial guage. So they would not have the time anyway to get stuck.
Steve
2020 GTS in Sapphire Blue
(sold) 2017 SD in Rhodium Silver
2020 GTS in Sapphire Blue
(sold) 2017 SD in Rhodium Silver
Aluminium oxides and swells. I recently spent may hours cutting a carbon fibre seat post out of an aluminium bicycle frame as no amount of pulling and twisting would free it
2017 Macan GTS Carmine Red
2005 Boxster S Artic Silver
2005 Boxster S Artic Silver
Somebody pinched all 4 of our dust caps a while ago on our other car! I seem to remember after a bit of research that there are ‘special’ caps to suit TPMS? Not sure why they should need to be ‘special’ given that TPMS has been mandated for years but possibly a consideration?
I don't believe the dust caps are "special" for TPMS, they are just to keep the crap out of the valve, tgat said the original Porsche plastic ones are better quality than the 'orrible black one I got with my new tyre after the recent puncture (note to self: don't let that happen again). However, I bought these from Amazon: PNA70500199 Silver Valve CAPS
No complaints!
No complaints!
http://www.porsche-code.com/PP37WLA6, a Dolomite Silver S, collected from Stockport OPC on Valentine's Day 2023, after a 399 day wait.
Ex.: Gen2 S, Volcano grey 1/9/19 - 3/2/23 & 39,235 Smiles, RIP
Ex.: Gen2 S, Volcano grey 1/9/19 - 3/2/23 & 39,235 Smiles, RIP
- Nuclear Nick
- Posts: 3814
- Joined: Wed Feb 17, 2016 3:42 pm
- Location: Bristol
The manual states that only plastic caps should be used. The reason is that two dissimilar metals with water present will set up a corrosion cell. The process will chemically bond the two metals together, so it’s not ‘welding’ in the true sense.
Nick
Defender 90 V8
991.2 C2 GTS
Macan Turbo - sold
BMW K1300S, BMW R1250 GSA
Defender 90 V8
991.2 C2 GTS
Macan Turbo - sold
BMW K1300S, BMW R1250 GSA
-
- Similar Topics
- Replies
- Views
- Last post
-
- 1 Replies
- 234 Views
-
Last post by Neil1911
-
- 30 Replies
- 4263 Views
-
Last post by Neil1911
-
- 19 Replies
- 3746 Views
-
Last post by Nuclear Nick
-
- 9 Replies
- 2394 Views
-
Last post by wingless
-
- 11 Replies
- 1851 Views
-
Last post by Scotty2F