Can tyres just randomly go flat?

[eltax91]

Hi all

I have an off road LR Defender 90 in the garage, which is my weekend toy. It's not been out for about 3 weeks, last time I put it in the garage, i blew the tyres up to 32 psi.

Cue this morning, as the garage door rolled up, my Defender appeared to be listing to one side and upon inspection, the front left has lost all air! When I last went into the garage (Saturday) it was fine.

So, possible explanations for why it just loses all air randomly? Tyres are Insa Turbo Special tracks, 267/75/16 and the rims are steel....

[marshalla]

Tyre not properly seated on the rim, leaky valve, nail in tyre, malicious mice

[badlands1]

This happened to my bro in his car.
I was told that the wheel on the inside had rust on it and was forcing the air out.

To fix it

He went to a tyre centre and they said the same thing to which they charged him £10 per corner to remove tyre, remove rust, seal with a rubber sealant and then replace.
He said it happens a lot to a lot of peoples cars, but this might last 3 months or 3 years.
But it has fixed the problem.

[Z4monster]

Slow puncture, leaky valve, porous wheel or damaged seal with tyre.

Any or all of these could cause it. On an off roader I would suspect ANY of them.

[RobM77]

Tyres losing pressure is usually either a poor seal between rim and tyre, which can be fixed by a tyre fitter either now, or when they fit new tyres; or it could be a slow puncture caused by something syuck in the tyre. In rarer cases it could be a faulty valve. Don't forget though that as temperature drops, so does pressure, but 10 degrees C down to 0 is usually only about 2 or 3 psi at most.

[badlands1]

Plus, WHY have you not had the Defender out for three weeks.

[badlands1]

Btw, What I said in my post above was after my bro done all those other checks what those people said.

[Superhoop]

As you pumped the tyres up last time you parked it up, there's a pretty good chance that was dirt stuck in the valve which has stopped it seating properly

[badlands1]

Or your Defenders just pissed at you for making it sit inside for three weeks.

[eltax91]

Ha! Thanks to all those who are making fun about it not turning a wheel! I have reasons why it has not moved, mainly involving some work I needed to do and partly to dry out its recent waxoyl coat!

Anyway, I inflated it when I got in and good hear the air coming out. Running my finger around the inside bead has traced the leak there. So, the change in temperature must have created a gap as the rubber contracted enough.

Just got to figure out how to get it started tomorrow after work so I can turn it round and create enough room to jack it up and get the wheel to a garage.