gazzaecowarrior Posted January 16, 2010 Report Share Posted January 16, 2010 My new tyre and new wheel seems to lose pressure only when I ride. It holds it pressure perfectly and doesn't lose any pressure when left for a whole week but as soon as I start riding, it goes down to flat after the first lap. I bought a tube of doctor sludge and put that in the wheel as I thought it may be coming out of the spokes. But same thing again. Doesn't lose any pressure when not in use but went down to flat after one lap. Could it be a dented rim ? It is a brand new wheel but I am wondering if I dented it whilst finishing the lap with a flat tyre. It doesn't appear dented when inspected. Any advice would be appreciated. I fit my own tyres and it is definately on right. Quote Link to comment Share on other sites More sharing options...
chewy Posted January 16, 2010 Report Share Posted January 16, 2010 It has to be either the seal at point where tyre meets rim or the actual tyre leaking when "flexing" Sorry can't be more helpfull Quote Link to comment Share on other sites More sharing options...
2lls Posted January 16, 2010 Report Share Posted January 16, 2010 check nut on valve stem is nipped up and valve is tight, blow up tyre to about 6lb , fill bath with water, slowly roll wheel with downward pressure, look for any small bubbles this will show the leak hope this helps Quote Link to comment Share on other sites More sharing options...
stevel Posted January 17, 2010 Report Share Posted January 17, 2010 tubed tyre on tubeless rim? Quote Link to comment Share on other sites More sharing options...
bucki3 Posted January 17, 2010 Report Share Posted January 17, 2010 (edited) Could be the valve leaking when in use, try the old spit method on the valve?? Edited January 17, 2010 by bucki3 Quote Link to comment Share on other sites More sharing options...
gazzaecowarrior Posted January 17, 2010 Author Report Share Posted January 17, 2010 It is a vee rubber tyre which is suitable for both tube and tubeless. Wheel is brand new as is the valve. I bought a new wheel to keep the old one for practice. When I first fitted the tyre I pumped it up to 30psi just to make sure it stayed on the rim. When I checked it a week later it was still 30psi. Only when in use does it deflate. I would be suprised if it was a valve issue as it would leak when not in use too. I really am stumped !!! Quote Link to comment Share on other sites More sharing options...
lowbrow Posted January 17, 2010 Report Share Posted January 17, 2010 Put the new tyre on your old wheel and see what happens then. At least you'll know whether its the new wheel or the tyre. Quote Link to comment Share on other sites More sharing options...
b40rt Posted January 17, 2010 Report Share Posted January 17, 2010 It is a vee rubber tyre which is suitable for both tube and tubeless. Wheel is brand new as is the valve. I bought a new wheel to keep the old one for practice. When I first fitted the tyre I pumped it up to 30psi just to make sure it stayed on the rim. When I checked it a week later it was still 30psi. Only when in use does it deflate. I would be suprised if it was a valve issue as it would leak when not in use too. I really am stumped !!! Sounds like a kink in the tyre. at 30psi the pressure holds it tight to the rim. but at 5psi its moving enough to leak. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.