Tyre pressure loss?

Originally Posted by Spanner Man

The loss of a couple of PSI per week is normal.

I don't agree with this statement. The current tyres on my 03 thou are holding a steady 36psi for months on end. I hardly ever have to pump up the tyres on my car either.

There is a leak somewhere, albeit a slow one.

Puncture
Leaking valve core
Leaking valve
Leak between tyre and rim
Porous rim

[Spanner Man]

Originally Posted by Rocket

I don't agree with this statement. The current tyres on my 03 thou are holding a steady 36psi for months on end. I hardly ever have to pump up the tyres on my car either.

There is a leak somewhere, albeit a slow one.

Puncture
Leaking valve core
Leaking valve
Leak between tyre and rim
Porous rim

Well you must be the lucky one then Or perhaps I should have been more specific & said 'could be considered normal'
After all why does one think that manufacturers specify that you should check your tyre pressures weekly, or every 200 miles?....Cue for some 'handbag flinging'

Check 'em weekly folks we can't all be as lucky as Rocket!


Cheers.

[Sir Trev]

Originally Posted by Spanner Man

Well you must be the lucky one then Or perhaps I should have been more specific & said 'could be considered normal'
After all why does one think that manufacturers specify that you should check your tyre pressures weekly, or every 200 miles?....Cue for some 'handbag flinging'

Check 'em weekly folks we can't all be as lucky as Rocket!


Cheers.

Mine hardly ever lose more than a PSi or so here and there (atmospheric changes probably) but I always check them before every ride! That one time I don't check may be the time I ride off with damage picked up from the last ride that's already dropped the pressure to half the recommended...

[Lissa]

We used to always lose pressure, both on the SV and then on the Duke............until we used a different tyre fitter. Now we can go weeks with no loss of pressure. What the new fitter is doing different to the old one, I don't know, but the difference is very apparent.

[yorkie_chris]

Soap or new valve cores maybe.

Originally Posted by Lissa

We used to always lose pressure, both on the SV and then on the Duke............until we used a different tyre fitter. Now we can go weeks with no loss of pressure. What the new fitter is doing different to the old one, I don't know, but the difference is very apparent.

Perhaps he is a little nicer to the bead area... I am no tyre fitter but I get to fit and balance all of my own bike, car, truck tyres (less of the latter two) and learned the hard way that reasonable care needs to be taken with the beads.

[flymo]

Totally agree MattCo. Fitting tyres is one of things that only needs doing once if you do it properly. If the rims are cleaned properly and the tyre is soaped before fitting you should get a pretty good seal on a straight rim.

I fit all my own race tyres, the only issue I've ever had with pressure loss has been a faulty valve core once.