Check your tyre pressures! - mss1tw
My rear offside was 15 psi when I checked this morning. Can I tell the difference now? Nope...but I'd rather have the recommended 32 psi in there. :-O
CHECK YOUR TYRE PRESSURES! - PW
If that low would recommend checking tonight- could have slow puncture- happened to me couple of months back- and couldn't tell the difference either.
CHECK YOUR TYRE PRESSURES! - Civic8
>>If that low would recommend checking tonight- could have slow puncture- happened to me couple of months back- and couldn't tell the difference either.

Wise,but my 218 suffered this on front wheel,pressure dropped over 2 days.Did so for almost a year,I did have new tyres fitted to front as well and every attempt to find the leak failed.

I resorted to removing offending wheel ie steel,and kept in an old tank half full of water..this resulted in finding a leak in the steel rim approx 1/2 inch away from the valve,as the steel was perfect as far as paint coating was concerned must have been a flaw in the metal causing it to leak.

I have since replaced the wheel and it has not happened since,took a long time to find it though and was getting annoyed at not finding it before..I will add it only happened when metal was cold
--
Steve
CHECK YOUR TYRE PRESSURES! - BazzaBear {P}
Yes, in some FWD-front engined cars the rears can go pretty flat without you being able to tell at all, because so much of the weight is at the front. I'd check yours very regularly now for a while, for it to get that low there's likely a slow puncture, or it could be a local scrote playing a trick.
My mothers approach to tyre pressures is amusing. They're fine unless they 'look a bit flat' at which point she puts air in them until 'they look about right'. Pretty much pot luck how much air there actually is in them.
CHECK YOUR TYRE PRESSURES! - Armitage Shanks {p}
It could also be a porous alloy, assuming that you have alloys fitted, of course!
CHECK YOUR TYRE PRESSURES! - mss1tw
Yeah I'm going to check it again tonight, the others were around 28 psi. Guess it might show up as .01 more mpg...

I think it's just the tyre, none of them are particularly fantastic (Just ageing)
CHECK YOUR TYRE PRESSURES! - Stuartli
The recent hot weather has played a part in tyre pressures moving upwards or downwards.

We had around a month or so of very hot weather and my tyres were set at the 32psi I normally use; they are checked weekly on the same electronic air line which tallies with my own tyre pressure guage..

Before a long trip, I checked them and discovered they were all at 29psi.

That was just after the temperatures had dropped quite sharply...:-)
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What\'s for you won\'t pass you by
CHECK YOUR TYRE PRESSURES! - PW
This is why always check mine in the late evening in the summer when cars been in the shade for a long time.
CHECK YOUR TYRE PRESSURES! - PW
Just re read that and sounds really pompous! Didn't mean to be- was pointed out to me when I first started driving and hadn't thought about it before then.
CHECK YOUR TYRE PRESSURES! - mss1tw
Just re read that and sounds really pompous!


Not at all! To me, anyway...
CHECK YOUR TYRE PRESSURES! - PW
Bit paranoid about whole subject as neighbours have made comments about how often I check both cars (comment was always seem to be doing it). Hasn't stopped me doing it as regularly though.
CHECK YOUR TYRE PRESSURES! - Stuartli
>>as neighbours have made comments about how often I check both cars >>

None of their damned business...:-)
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What\'s for you won\'t pass you by
CHECK YOUR TYRE PRESSURES! - Lud
My wife noticed in Germany that a lot of blokes there stand proudly and protectively beside their cars with arms folded in motorway service areas instead of eating, drinking and evacuating with their families.

We discussed it a bit but didn't ask any of them why they did it.