Possible damage to tyres by tyre centres - cheddar
Hello,

I had two tyres removed and refitted yesterday due to leaking valves, I was a bit concerned as to how the various pneumatically powered devices bent and distorted the side walls while removing and refitting the tyres though all seems well.


Any thoughts?
Possible damage to tyres by tyre centres - Cliff Pope
I've always been fascinated by this process - it's so much easier than struggling with large screwdrivers and inadequate tyre levers!

I have over the years noticed big variations between operatives in how careful they are to minimise that stretching and bending.
Some take elaborate care, both to fully wet the bead with soap solution, and to go slowly and ease the bead over the rim. I've seen some stop and help an awkward bit with a lever, rather than just run on regardless. Others do it so carelessly you can hear the tyre squawking and protesting.

Likewise if fitting an inner tube. Some just blow it up in one go, others partially inflate, then take the valve out again, deflate the tyre, and bounce it about to ease the tube into an unstrained position.
Possible damage to tyres by tyre centres - Peter D
I was about to jump in ask where you had an inner tube fitted then I realized it was you Cliff so all is forgiven. Here in the UK Inner tubes where outlawed as a method of repairing a tubeless tyre and almost all outlets will not sell you an inner tube. Notice I said all. Good to see you are on the ball Cliff. Regards Peter
Possible damage to tyres by tyre centres - Peter D
Am I loosing the plot or what. I just checked and you are in the UK. I know a Cliff Pope in S.Africa form another forum I think, thus the comment about the UK. And yes I have a late 93 240 SE as well, not built as well as my previuos 1983 240 though which now lives in Moscow. Regards Peter
Possible damage to tyres by tyre centres - jc
You need inner tubes if you have wire wheels!!!
Possible damage to tyres by tyre centres - cavi
correct me if im wrong but it is possible to fit tubeless tyres on certain types of wire wheels
Possible damage to tyres by tyre centres - cheddar
Great to see a thread staying on topic ....

;-)
Possible damage to tyres by tyre centres - jc
BMW used externally mounted spokes on some of their motorcycles but I was talking REAL wire wheels.
Possible damage to tyres by tyre centres - Cliff Pope
Lots of mini-threads seem to be emerging here:
1) I am not Cliff Pope in South Africa
2) I have quite a lot of the tyres on my 2 cars with inner tubes. The Triumph is mostly inner tubed because the old wheels don't seal very well with tubeless. The Volvo alloys were fitted with tubes by the garage, because the man said older alloys get porous. There has been a long thread by people disputing that point, but the fact is a reputable garage advised it, and supplied the tubes free. Also I checked the Dunlop website and they say nearly all their tubeless tyres are suitable for inner tubes.
I think the point may be that low-profile tyres can't take inner tubes, but older sizes (185 R 14, 175R 13 in my examples)can and do.
3)Back to the main thread - I agree some tyre changers appear to abuse the tyre when fitting. It would be interesting to have some observations from a professional.
Possible damage to tyres by tyre centres - Crinkly Dave
I would be interested if someone could confirm the point about legallity of fitting tubes to tubeless tyres. Whether it is true, and if so is a regulation,industry advice or "good practice"

the other thing is that fitting a tube to cure a puncture is not the same as fitting one to cure porous wheels.

Many years ago I took a tyre into a centre to change it as the tube was punctured. I paid for a new tubeless tyre and valve. I had to take it back as it still leaked, only to find the tube still inside. Needless to say, never used that centre again
Possible damage to tyres by tyre centres - lezebre
Crinkly Dave,

It may be of interest that my brand new motorbike tyres have embossed on the sidewall 'Tubeless - if fitted to a tube-type rim fit a tube' , which does suggest there is no blanket ban on the practice, and I am pretty sure there is no legal issue for cars or bikes.

I think it was mentioned in another thread that some tubeless car tyres are suitable for running with tubes and some are not, depending on the design of the interior of the tyre, so the rule would seem to be to check with the manufacturers first.
Possible damage to tyres by tyre centres - Number_Cruncher
For my part, I don't use the automatic tyre fitting machines even if they are available to me. I find that I can change a tubeless tyre in a similar time to that taken by a colleauge using the machine.

During the time while my father's workshop was still running, I was by far the youngest there, so, tyre fitting and puncture repair fell to me. Only when my tyre fitting duties were finished could I get involved with anything more interesting!

Mending truck tyres with tyre levers follows the same sort of procedure, it is just a lot harder work!

I prefer using the tyre levers and a hammer because you can feel if you are getting it wrong. If the tyre doesn't go over the bead easily, I know that either I haven't got the diametrically opposite part of the bead sat in the well of the rim properly, or I haven't got enough lube paste on the bead. Either way, I can correct it before I strain the bead - I'm not sure how you would prevent this type of problem using the machine.

Number_Cruncher
Possible damage to tyres by tyre centres - lezebre
"I prefer using the tyre levers and a hammer"

Having followed the procedure as outlined in Haynes (for a bike with steel rims) I understand the bit about the opposite bead in the well and the levers, but where does the hammer come in, please?
Possible damage to tyres by tyre centres - Number_Cruncher
For a bike tyre, I probably wouldn't bother with the hammer at all.

At certain points in the procedure, while removing or installing a car tyre, a light tap on the bead with a hammer while applying some force to the tyre will gain you more progress than a few minutes of levering.

Fitting tyres manually is one of those jobs where there really is a knack. When you get it right, you don't actually need to apply much force at all to the tyre.

Number_Cruncher
Possible damage to tyres by tyre centres - v8man
I recently had a set of new boots fitted to my '95 Range Rover. The Pirelli Scorpions were removed and two of them had tubes fitted! I was gobsmacked.
--
\"Nothing less than 8 cylinders will do\"
Possible damage to tyres by tyre centres - Civic8
>>Fitting tyres manually is one of those jobs where there really is a knack. When you get it right, you don't actually need to apply much force at all to the tyre.

Apart from stubborn one`s,where you end up driving front wheel of another car onto sidewall to release it.Did not often happen but was the only way,if you did not have the modern gear at hand

--
Steve
Possible damage to tyres by tyre centres - none
As NC says, knack is important - but make of tyre is just as important when fitting them manually. Of the tyres I use Michelins and Bridgestone are the easiest to fit, Goodyear are usually pigs to remove and fit. I have to disagree with NC on one point though (again) A decent clout with a decent lump hammer is whats needed !
By the way, I know of one blowout caused by a hammer being left inside the tyre. (No, it wasn't me).
As for tubes, the local tyre shop stocks them in a very limited range of sizes - none for low profile tyres. We sometimes have a hire vehicle returned with an irrepairably damaged tyre with a wrong sized tube stuffed into it, in these cases the hirer pays twice - once to have the tube fitted and again to have it removed and a new tyre fitted.