Run a tube in a tyre with slow leak?

[Maltopia]

Hi, my front right tyre keeps losing pressure.

Tyre shop have done a water test and pressure test but can't find the leak. They didn't take the tyre off the rim and feel for a small nail (I'll do that next). The valve core has been swapped, but I keep getting low pressure after a couple of days.

Have only done 40,000 KM so too soon to replace all the tyres and I don't want to replace just one (uneven wear).

It has been suggested to me that I have the tyre shop insert a tube. Can anyone advise if that would interfere with the tyre pressure gauge on the dashboard?

Any other suggestions?

Many thanks.

[Umai Naa!!]

Is the tyre actually losing air, or is it just the light coming on?

[Maltopia]

Yeah losing pressure. Down to 9.6 PSI one day, completely flat another, down to 31 PSI ( from 38 ) 2 days after topping it up.

Other times there is no leaking or imperceptible loss over a few days if I have not driven very much.

[Stanton]

Big NO to using a tube.

[h100vw]

Big NO to using a tube.

I agree it's not the 70s any more. 40000 for a tyre is pretty good I reckon. Although, I'd be tempted to try another tyre shop.

Gavin