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Posted (edited)

I had the problem with my X Kings not holding pressure when repumping them after they went flat due to no riding for about two months (in the same period my Geax tyres did not loose pressure at all)The tyres did not want to hold pressure, even after putting in fresh "Stans" through the valve core, taking care not to greak the "seal" of the tyres to the rim. 200ml per tyre was added.I later resorted to pumping the tyres to 5 bar and submerging them in my Jacuzzi to see where the leaks are, suspecting it might be around the valve. Big was my surprise that the air was escaping through the sidewalls (these are the Protection versions, supposedly Tubeless). The one tyre was so bad I could hear and feel the air escape.After spending hours slowly turning the wheel around while it was horisontal and laying it flat to allow the Stans to reach all over, the air stopped escaping.I then still left the tyres at 5 bar and laying horizontaly, turning them around every so often, did this for two days. The tyres then kept the pressure, but there were droplets of Stans all over the sidewalls. (will post pics of this tomorrow)I am now very worried about the "protection" these tyres has for sidewall cuts and punctures.Anyone else experienced this?

 

 

 

 

 

 

 

Edited by Wannabe
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Posted

I had the same with a Richey WCS Shield. The front one seal just fine. The back one need to be pumped every ride for the first 2 weeks.

Posted

Rocket rons performance have sidewalls as thick as condoms... But it took me just 20 min to

install and seal with stans... I do ride at slightly high pressure and have never had sidewall issues... I have had a puncture on the tread.. But then we all do...

Posted

This issue has been covered in depth on other threads, but nevertheless, here goes...

It's quite strange to buy a tyre that leaks like a sieve, new!

However, these tyres do have this strange quirk.

When you fit them for the first time use Stan's and roll the tyre around, in all directions, then check for leaks..

To cut a long story short, then lay the tyre on it's side so that the Stan's can linger, overnight if necessary... over the leaky spot... (sorry.. spots)

After some days, the leaks will all be gone!

I only am prepared to do all of this because they happen to be stunning tyres, very grippy, especially the Mountain Kings...

Have fun

Posted
And ... X Kings seem to have had a dodgy batch out there to make life even more interesting than usual.. I have one

 

Yes, I ripped a knob clean off with surrounding rubber on a tame ride at Groenkloof. Hammered my Maxxis before them and never did that.

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