Bloody, crappy, useless, god-foresaken run flats............

[MadDad]

I am having a total nightmare with my god forsaken run-flat tyres loosing pressure, seemingly no pattern or reason.

I have 3 x Pirellis and a Conti, unfortunately they are all almost new otherwise I would swap them for non-runflats but cannot justify the cost at the moment. For reasons I cannot fathom out they keep loosing pressure, sometimes just one, sometimes all four, sometimes just a couple of psi, other times 10-15 psi. I have checked for punctures, I have checked and tightened the valve stems, put ‘leakproof’ valve covers on – nothing seems to help.

Is this a normal trait of run-flats? Do I just have to live with it and keep topping them up every couple of weeks? Anyone else suffer from this?, if so did you ever remedy it?

[Eviltad]

How old is the car? Could the alloys be corroded or cracked and losing pressure?

Mine is a Jan 04 and had a very slow puncture which we root caused to a corroded alloy. Refurb done, no more losses.

[Hartge220]

They shouldn't be loosing that much pressure

If you've got a friendly local tyre fitter take them in & get them to re-seat the tyres? Hopefully that would work??

[em177]

Get some locking valve caps..... That will confirm know ones being a tt!

[Justin S]

Chop them in for normal tyres and then flog the RF's on fleabay

[MadDad]

Thanks all, car is a 2006 with 49k on the clock, 3 x of the tyres were new just before I bought the car, but the 'old' one is just as bad as the rest. I guess it could be the alloys but it would be bad luck to have all of them go?

I will definitely be replacing them with 'normal' tyres when the time comes!