Avon Roadrunner question

[Rex]

I've got Mitas' front and rear on the Flying Squirrel and I like them. Grippy and soft, ask them nicely and they jump on the rims by themselves.

[Worty]

I've got Mitas' front and rear on the Flying Squirrel and I like them. Grippy and soft, ask them nicely and they jump on the rims by themselves.

Heh, getting the AM26 on was a battle.  May pay the £10 and get the bike shop to put the 130/90 18 on the Dubya.

[Rex]

Some tw*t's put a tubeless tyre on the front of my Goldie. That'll be a job for the tyre shop to remove then.

[Worty]

Some tw*t's put a tubeless tyre on the front of my Goldie. That'll be a job for the tyre shop to remove then.

Do you mean a tube in a tubeless?  That's legit isn't it?  No tubes on tubeless rims, but tubes with tubeless tyres on spokes?

[groily]

It is legit worty.
See, eg, https://enve.com/blogs/journal/tubeless-misconceptions & "Misconception #2" here.
You're OK Rex, many folk run with tubes on spoked wheels, and indeed with tubes after punctures on tubeless rims. I certainly do / have and will continue. Shouldn't be a problem and I'd leave the Goldie alone!

[limeyrob]

In the UK and Europe this is all covered by the ETRTO standards and guidance.  The tyre fitter training is based on this too.  Its very clear on tube and tubeless tyres. In all cases it is the rim that determines the tube fitting.  So a tube rim must always have a tube and when a tubeless tyre is fitted to a tube rim the tyre becomes a tube tyre.  Only tubeless tyres are approved for tubeless rims.  A tube tyre may have on it "can be fitted with tube".
This is a big issue in the classic car community and the one problem we have found is that some tubeless tyres have large internal pips and ridges and over time these wear into the tube, but this takes high mileages.

[Rex]

I had a tubeless tyre on the 19" S/S front wheel I bought back in January, and I've also got one on the 21" front wheel of the Goldie, and it seems to be impossible to break the seal and get the rims into the rim valley. Too stiff, too tight, dunno, but it took a mate with a bead breaker to do it.

[Triton Thrasher]

Some tw*t's put a tubeless tyre on the front of my Goldie.

Yes, I do that a lot.  In fact I don’t always look at whether the tyre I’m fitting, with a tube, is tubeless type.

[groily]

  . .  and it seems to be impossible to break the seal and get the rims into the rim valley. Too stiff, too tight, dunno, but it took a mate with a bead breaker to do it.

Yup, can be hard with some of them Rex. I use a large vice to squeeze the sides of the tyre to break the seal if it doesn't respond to standard boot treatment. But I don't like tyre fitting much these days  I have to say, esp w alloy rims. When I was young, tyres went on by hand and foot, even the last bit. Either I've become a wimp or the designs are slightly tougher (except for those self-fitting Mitas of yours maybe). The multiple cable-tie trick can work well though - if you align the valve correctly so it pops through.