Porus alloy wheels
 

My alloys on my Zafira seem to lose their pressure quite quickly, unlike the steel ones on my other car.

Even though the front tyres have been replaced, all 4 of them still seem to drop quite rapidly.

I only pumped them up the other week, but one of the newish fronts was down to 19psi from 32 :confused:

None of the valve cores are leaking, I've checked that and I know the temp will have an effect, but not that dramatic. None are punctured

Any tips or hints. Would a punture sealant fluid help?

Re: Porus alloy wheels
 

did they remove the residue on the inner rims when they fitted the new tyres?

Re: Porus alloy wheels
 

Yep, I was there. The rear's weren't changed and they still drop their pressures

Re: Porus alloy wheels
 

when did you get them fitted ?
faulty Shrader Valve or as above, the tyre rim not sealed......

or you might have a puncture.

I've just spent £109 today getting 2 new front tyres on my battlebus. + £104 for 6 months tax, and £50 for a full tank that will last me 4 days. I hate the cage but in this weather you can't fall off a cage.

Re: Porus alloy wheels
 

Checked all of the above and it's my local place.

Strangely my Mum has similar problems on her Astra. Perhaps its just Vauxhall alloys that do this?

Re: Porus alloy wheels
 

Get a couple of tubes of slime and throw in there.

The fibres in the slime block any holes and plug the leaks.

Re: Porus alloy wheels
 

Aye, I was thinking along these lines

Ta Speedplay

Re: Porus alloy wheels
 

Pleasure :)

Re: Porus alloy wheels
 

all alloys dont seal as well as steel rims, my mate works at ATS he told me this.

Re: Porus alloy wheels
 

Thats true.

Alloy wheels are more porous than steel wheels, hence using slime.