Tyre won't fit on rim
Discussion
Have you pushed the bead into the centre of the rim into the dished / recessed part and the pulled the tyre hard to get some slack? Like this:
https://youtu.be/LPWBbDR3oag
https://youtu.be/LPWBbDR3oag
Norgles said:
Have you pushed the bead into the centre of the rim into the dished / recessed part and the pulled the tyre hard to get some slack? Like this:
https://youtu.be/LPWBbDR3oag
Tried that, still absolutely nowhere near going on :/https://youtu.be/LPWBbDR3oag
Some Continental tyres can be a bit of a git to get on - if I'm really struggling I use a combination of washing up liquid to lubricate the tyre bead and a zip tie to act as an extra thumb, so I can concentrate on one end of the tyre section that won't seat.
Of course, you have to be a little careful with how tight you pull the zip tie, to ensure you don't damage the rim or tyre, but with a little bit of mechanical sympathy, it's a fairly safe and effective approach.
There are also some pretty good quick-fit tools available that make the job really simple.
Of course, you have to be a little careful with how tight you pull the zip tie, to ensure you don't damage the rim or tyre, but with a little bit of mechanical sympathy, it's a fairly safe and effective approach.
There are also some pretty good quick-fit tools available that make the job really simple.
I helped a friend last year to put her new and notoriously difficult Vittoria Corsa on her wheels. We gave up after 25' for the first one, before we thought of using a tiny amount of vaseline on the bead. It went in perfectly, I'd even say easily compared to the effort we put before, within a minute. Obviously we were careful not to apply that on the braking part of the rim, just a bit on the bead.
When you need to get the tyre off to deal with a puncture when youre on a ride you wont be able to heat it up etc, or (most probably) have several people helping up get the tyre back on etc
Take the tyre off again once youve put it on (if you do get it on). Some tyres stretch slightly once you finally get them on and its not such PITA to get them on subsequent times. Howerver if they are still difficult then being stuck on the verge not being able to get the tyre back on (or even off) isnt a scenario I like to entertain.
Have you tried lubricating the tyre with washing up liquid round the bead? Sometimes helps stubborn tyres onto the rim.
Ive had tyres (Vittorio Randoneurs) i had to admit defeat with and choose other tyres, im not prepared to take the chance of being stuck with a puncture i can't repair due to tyres that are so utterly difficult to get on or off. Lifes too short.
Good luck!
Take the tyre off again once youve put it on (if you do get it on). Some tyres stretch slightly once you finally get them on and its not such PITA to get them on subsequent times. Howerver if they are still difficult then being stuck on the verge not being able to get the tyre back on (or even off) isnt a scenario I like to entertain.
Have you tried lubricating the tyre with washing up liquid round the bead? Sometimes helps stubborn tyres onto the rim.
Ive had tyres (Vittorio Randoneurs) i had to admit defeat with and choose other tyres, im not prepared to take the chance of being stuck with a puncture i can't repair due to tyres that are so utterly difficult to get on or off. Lifes too short.
Good luck!
Some tyres really don’t want to go over some rims. The trick is to work out which tyres will fit over the rims you have, and remember the combos that work. For example, Continental GP5000TLs absolutely won’t go over my Fulcrum 55s, but the Vittoria Corsa TLs I bought last week, went on with out any sort of fight. The contis will fit the Mavic Ksyrium elites I have on a couple of my other bikes, but the Corsas really don’t want to go on without a massive fight / at all. I usually put the wheels in a chest freezer, and the tyres over a radiator before I start, and keep a hairdryer handy to help with any tricky bits.
Olivera said:
Put the tyres in the tumble dryer for 10 minutes - still absolutely nowhere near going on. I think I've somehow just got a nightmare combination of tyre and rim 
I had a similar issue with some "bargain" tyres from Planet X a while back.I tried them on at least 4 different rims. I proved that other tyres went on all the rims, but with the 'problem' tyres there was absolutely no chance of them ever fitting. So they were returned for a refund. They were correctly marked as (700c) 622s as well. I swear they were some dodgy fakes or "seconds" that fell off the back of a shipping container.
I had a thread about it, or mentioned them on an existing thread, can't remember which. I think I took photos too.
I've just ordered a new set of wheels from DCR Wheels in Sussex. They recommend a tubeless set up, but I don't have the budget for that right now as I've just put a new set of Conti GP 4 Seasons on the old rims. So I'm crossing my fingers, toes, etc that the tyres will go on the new rims when they get here...
ETA: Found that thread from 2018... https://www.pistonheads.com/gassing/topic.asp?h=0&... ...with photos of the offending tyres in the last page of posts.
Edited by yellowjack on Sunday 21st March 02:29
Leave the tube out. Make sure the bead is seated in the recessed centre of the rim all the way around and you should be able to push it over the rim with your thumbs.
If this side goes on then the other side will, but it’s not because there isn’t room for the bead to sit in the recess because the tube is in the way.
You’ve got to keep pushing the completely deflated tube up into the tyre to get it out of the way. When you get it right it will just go, and you’ll wonder what all the fuss was about.
I’ve got GP 4Seasons onto Ultegra rims (a tubeless ready rim that’s notoriously tight) using this method.
Just think about it, if one bead goes over the rim, then so will the other. They’re identical.
If this side goes on then the other side will, but it’s not because there isn’t room for the bead to sit in the recess because the tube is in the way.
You’ve got to keep pushing the completely deflated tube up into the tyre to get it out of the way. When you get it right it will just go, and you’ll wonder what all the fuss was about.
I’ve got GP 4Seasons onto Ultegra rims (a tubeless ready rim that’s notoriously tight) using this method.
Just think about it, if one bead goes over the rim, then so will the other. They’re identical.
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