Help, my rim is leaking!!

[L-Jam]

Basically lads and ladettes, I have had a new tyre (bt023) fitted a few weeks ago on the CBR, and the tyre seems to lose psi quite quickly. The old tyre did it, so I blamed it on a puncture that had been repaired, but since the new tyre has been fitted it has gone from 42psi to 9psi in 3 weeks. WTF?

Does this mean the rim is damaged? Also the tyre bloke said that my wheel didn't have much weights on it at all, does this affect anything?

Cheers guys, I'm selling the bike in a month anyway so am not massively bothered as I will just do the pressure every week to keep it up 'till then, but would like to be able to resolve this if possible.
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Skp 50 --> GS 500 --> CBR600F with custom HRC paint jobby --> GSX-R 750 K7, beautiful!

[c_dug]

It does sound like a damaged wheel, my ZZR was loosing pressure at a pretty similar rate and the flat spot was really clearly visible so give the wheel a good checking over and see if you can spot anything obvious.
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I am a bellend, I am a man of constant sorrow, I am a gummy bear, I am a rock.

[fiveus]

Had this problem before

remove tire and sand down any loose paint on the rim
you will then get a decent seal

[stinkwheel]

First check the valve isn't leaking. A blob of spit in the end of the valve and watching for bubbles is the traditional way.

Then swill a load of soapy water round the rim. You should see a leak.

You can sometimes get tyre beads to seat properly by taking the valve core out and quickly inflating it to 80-90psi. Another trick is to run a line of neat washing up liquid round the edge of the beads then do the inflating thing. Remember to wash it off again after.

Be aware that tyres can blowout at this pressure, but rarely. It's what they do when they fit them.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Towton 1461]

Alternatively, take it back to garage where the tyre was fitted and tell
them your problem. They'll no doubt have an old water-filled tank to
look for escaping air.

If the wheel runs true without much added balance weight being needed,
that's fine.
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[L-Jam]

It was a mobile tyre fitter who sorted me out, really sound guy too. I should have mentioned it tbh.

Cheers for the ideas, I'll give it a crack tomorrow when I get up my Dads after work.
____________________
Journalist, student, egotist.
Click here if you're a young biker, wondering what to do after a moped/125!
Skp 50 --> GS 500 --> CBR600F with custom HRC paint jobby --> GSX-R 750 K7, beautiful!

[pinkyfloyd]

When I read the title I was expecting THAT picutre!
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illuminateTHEmind wrote: I am just more evolved than most of you guys... this allows me to pick of things quickly which would have normally taken the common man years to master
Hockeystorm65:.well there are childish arguments...there are very childish arguments.....there are really stupid childish arguments and now there are......Pinkfloyd arguments!
Teflon-Mike:I think I agree with just about all Pinky has said.

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[pinkyfloyd]

[Dazbo666]