How to tell if my car alloy wheels have a lock?

[silentbrown]

cartyre said:

Yes tyres have only done about 3,000 miles at the very most.
I bought the AA Digital Tyre Pressure Gauge and after a few days trying it on the tyres I couldnt get the hang of it, it kept making air come out of the tyres rather than read the PSI and the readings were different every time I tried it on the same tyre, just seconds after the other reading.

Persevere with the gauge. You have to press them pretty hard onto the valve to take a reading, and a tiny amount of air is bound to escape as you put then on and off. Readings may vary but hopefully not by more than about 1 PSI. video here. https://www.youtube.com/watch?v=3H6UXD168yA

Several tyres all losing pressure at the same time and rate is unusual. Just thinking laterally, could anyone (neighbour, kids) be letting air out of your tyres for a prank? It's been known...

[cartyre]

Thanks, I have considered if maybe a neighbour etc was letting the tyres down...possible...I doubt it though.

Is it normal once I push the head of the digital tyre pressure gauge in firmly that there is a loud hissing noise for about 3 seconds? Is this not a sound of the air from the tyre being lost? It shouldnt lose more than 1 PSI being lost from that should it?

[TooMany2cvs]

You should just get the very briefest of noises. Any more, and air's being let out. If you're absolutely sure that you're holding it onto the valve correctly, then I wonder if the gauge itself's leaking?

[GreenV8S]

Did your 'tyres going flat' problem start after you started using the pressure gauge?

[E-bmw]

Good question based on the previous answer.

[cartyre]

No they were going flat well before the pressure guage.