I have just put a x11 competition tyre on my bike and had it set around 3 or 4 pound pressure but at a trial on sunday the rear wheel was still sliding around a lot, i know this weather i should expect it to slide around but it seemed worse than the tyre i took off which was a irc, the reason i changed the tyre was the irc spun around on the rim and let all of the air out so i thought it will probably happen again, time for a new one, i have noticed the walls of the new tyre seem stiffer than the other one so can anyone who uses the same tyre tell me how low they have their rear tyre, i am just over 11 stone and at 4 pound pressure the new tyre doesn't seem spread out much but i don't want to go to far and get the same problem as the irc.

its not air pressure that keeps a tubeless tyre in position on a tubeless rim. The tyre bead stretches as it goes up onto the rim and it grips the rim.

Run with as low a pressure as you want with a X11 and if it is seated properly when it is fitted, it won't come off the rim until you force it off deliberately.

You do need to make sure any tubeless tyre is fully up on the rim after fitting it, before you let the pressure down to trials pressure. They usually make a pop each side as they seat on the rim. You can use tyre soap or dishwashing liquid to help it slide up onto the rim if it is reluctant to jump into place. It should jump onto the rim somewhere between 30 and 60 psi if it is lubed

I suggest you judge how much pressure to ride with by the length of the tyre circumference that touches the ground with your weight on it, rather than a gauge, to start with. Once you have the tyre working how you want it, measure the pressure with YOUR gauge and from then on you can set it to that pressure with your gauge. I usually set my rear pressure to give a contact patch about 200 to 225mm long

been riding 45+ years, never used a pressure gauge, asked what I run at once said I don't know, let air out til it looks "right", the guy put his gauge on it and it wouldn't read, only went down to 3psi, so i must run less than that!

Some good advice a above

The only thing I would add is don’t use washing up liquid, it works fine but causes corrosion (I think it has a high level of salt added)

top yule tide tip for trials riders.. dont volunteer for the washing up.. all that salt in the fairy liquid can toughen up the pinkies and lead to a loss of feeling on the old brake/clutch lever leading to a dramatic drop off in performance much better to have a constant supply of turkey sarnies liberally buttered and with lashings of cranberry sauce this will result in a loverly lubricating moisteriser for the aforementioned pinkies and a Bou standard performance on Boxing day..

thanks everyone, i actually got the old tyre off quite easy and the first side of the new tyre wasn't to hard to put on but after that, no chance so i took it to a small garage that fitted tyres and he did it in a few minuets and that pop that was mentioned was more of a bang followed by another bang, total cost £5, so i asked for a card, anything tyre related iil just go to him, it took longer getting the orange lube off the tyres than it did fit it, sometimes the answer can be staring me in the face it just takes someone to point it out, once again thank you for the advice.

Hi Guys

Talked to our Michelin tyre Guru this is the way to go, clean in side of rim with a soft copper wire brush leave tyre in sun. For those of you that don't get any sun move or take the tyre on holiday with you ,In the UK try Halfords ,its car windscreen wash and it has a small amount of drying alcohol in it Fit tyre to the rim ,spray all over, have tyre valve out, pump up fast ,tyre will pop on don't go over 30 psi as this stretches the cords in the tyre. This stops tyre slipping off when in water or hitting big rocks . This has worked for me over many years ,don't use water with the windscreen wash.

Cheers Wakka

Hi Tony, The new tyre will be loads better but as the first place you tried it was at Shatterford I'm not surprised by the slipping and sliding around. There is no worse place for the greasy surface.

Next time you ride at your normal venues you will see the difference.

Tom

Generally a New X11 will have a stiffish sidewall. We were told by Graham Jarvis that he used to run the tyre at 1PSI on the road for a few hundred yards just to "break" the side wall stiffness before a trial.

Hi ...............tyre will pop on don't go over 30 psi as this stretches the cords in the tyre.......

30???? Hold the bus!

I've never had any luck putting a tyre on with less than 60 PSI. The last one I had to take to a tyre fitting depot to use 90PSI.

While we're on the subject, has anyone ever seated a trials tyre 'red-neck' style with a gas aerosol and a flame?

30???? Hold the bus!

I've never had any luck putting a tyre on with less than 60 PSI. The last one I had to take to a tyre fitting depot to use 90PSI.

While we're on the subject, has anyone ever seated a trials tyre 'red-neck' style with a gas aerosol and a flame?

I agree been known to hit 90+ psi before it popped!...clean underpants job! also agree with comment on Michies "softening " after initial use and given tip by tyre fitter, lard is good lube and helps seal when 1st inflating!

Hi Tony, The new tyre will be loads better but as the first place you tried it was at Shatterford I'm not surprised by the slipping and sliding around. There is no worse place for the greasy surface.

Next time you ride at your normal venues you will see the difference.

Tom

Shatterford has to be one of the most slippery places to ride a bike!

Edited December 25, 201411 yr by suzuki250

Use a ratched strap around the tyre to put some pressure on the tyre to hit the rim and then put a good airhose on it, without the ventile inside.

i dont think you will notice much difference between your new x11 and irc other than it wont come of the rim. never got on with x11. they are way to stiff in the mud we ride in. when its cold they go even more rock solid. next time go for an xlite mate. well worth the extra money! . i dont measure my pressure either. i just let most of it out just so i cant push the tyre to close into the rim

The X11 is a great tyre, Slightly better than an x lite in the mud but you have to let them down a bit more

I run X lites because I don't see sharp rocks like you get up north and the unsprung weight saving is a plus. I run them at I guess around 8 psi, But saying that I spend most time on the back wheel in the mud to grip anyway.

The irc is no match for a michelin full stop, If they were much cheaper they would be a viable option but the price difference makes them a stupid investment when an extra tenner will get you a proper tyre. I would rather run a half bald mich than an IRC again.