Front tyre goes flat

[fireman]

A strange thing keeps happening to me as i go out my bike,

I drive my bike every day and on the odd!! occasion I do give it a bit of welly, everytime I hit 120mph my front tyre goes flat, I then go to the garage and put air in it and its fine to drive after, I dont have to put air into it again unless i crack a 120mph. Is this weird or more sophisticated then what Im thinking is a very strange happening.

My thoughts are that there is a speed rating on this particular tyre which off the top of my head I can't think what it is and once you go past a certain speed it deflates

The tyre has plenty of like left it so have to say WTF is going on

[tony.mon]

It's a valve problem.
The spring allows air to escape due to centripetal force.

So all you need to do is replace the valve core and reinflate.
Sorted.

[fireman]

Thanks for that, I didn't have a clue what was going on, now to get it fixed happy days

[tony.mon]

The best fixes are the cheap ones!

[benny hedges]

petal force.

sounds like an alliance of rebel flower arrangers.... or a new reality tv show.

terdae tony is pruning his aspidistras....
welcome back m8.

and to answer your previous question, yes the sp clutch grabs

& back on topic..... next time you change tyres, check the paint isnt blistered inside the rim.... like a powdery dry rot oxidation on the ally finish
could be the air is seeping under the paint - not unheard of & a trip to the powder coaters will cure it.

[tony.mon]

The clue here is that it only loses pressure when used at higher speeds.
Poor sealing or a porous casting will leak over time, rather than use or speed-related.
If it's a valve it will hold pressure perfectly for months, but over certain speeds it will leak.

[gilson]

We no longer need this forum. Just tony's email.

On his way to be second only to the great Roger D.