OT: Puncture

[harry]

The problem is getting the tyre off the rim. And re-inflating it.

[Dave Plowman (News)]

There are independants around - but not ones I've used before. My favourite one - who had posh four wheel alignment equipment - is now housing. If I need new tyres I usually look for the best price for a given tyre, which is never Kwik-Fit. But being so close, I've used them before, and not paid anywhere near as much for a puncture. Guess something has changed.

[alan_m]

Tyre places seem to have 3 prices

Cheapest - Shop and pay on-line and then turn up. Mid-price - Phone up first to obtain the price. Just make sure that its an all inclusive price as if you don't ask the bill may contain extras such as valve, balancing and VAT. Dearest - just turn up and I'm sure they just make up a new price.

Also, those FREE 10 pint checks will always find something else to be fixed.

[Cursitor Doom]

That makes sense. Dave *is* a prize chump after all. :->

[T i m]

<snip>

... 'repaired traditionally' ... ?

But what if there was a way to repair a hole in a position where, because of the way a tyre and mechanical repair wouldn't work (too much flex) but where an alternative wouldn't suffer the same problem, and would allow you to continue to safely use the tyre till it wore out, wouldn't that be a better solution?

The structural integrity of a tyre is *only* down to it's mechanical construction ... the rim bead and the plies or cords that form the belts, without them you just have a balloon. ;-)

So, given a 'conventional repair' does *NOTHING* to repair any of the cords that may have been damaged, but just plugs the hole to stop the air escaping the balloon (and they often make that hole worse in the process) might it not be better if some sealant, (ideally) already in the tyre that would first help eject the object before any damage was done (lubrication) and then fill the hole with a flexible plug that not only instantly stops any air escaping but also protects the ends of any cords exposed in the process?

Further, any heat generated by the flexing of the tyre at that location helps to 'cure' the plug in the hole.

Does it actually work as I describe? It has for me and the others I have introduced it to so far. ;-)

Cheers, T i m

[JoeJoe]

The price of a new tyre?

It is always "you need a new tyre" with Kwik-fit.

[Steve Walker]

There is a way, but most tyre places don't bother paying for the equipment to do it and on most, standard, car tyres it isn't worth it - they should be able to refer you to someone who can do it though. The relevant British Standard defines an area within which the basic plug and patch repair can be carried out, but outside that area it can only be carried out by hot vulcanising.

SteveW

[Steve Walker]

Back in the days where replacement exhausts only seemed to last two years, I went to another chain with a blowing exhaust that had split at the joint to one of the silencers. They checked and found that they didn't have one in stock and only then offered to braze the old one. That repair lasted over three years!

SteveW

[Steven]

But it?s a significant hassle getting the tyre off the rim and back on again and you need a decent compressor to inflate it again, you can't just take it down the servo.

[Mark]

repairing a car tyre puncture is DIYable I have been doing my own since the 70s as its a 24mile round trip or twice that if they would not do it while I waited and i never like paying for something i can do myself

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[Richard]

This may be of interest:

[harry]

All the legit ones do. At one time there was a needle like tool that forces a rubber cord into the hole. But no longer legit.

The legit ones have a rubber "mushroom" inserted from inside.

[Brian Reay]

I think the last time I had a puncture, about a year back, a small independent near me changed me about £20. I went back recently for some tyres for my wife?s Smart Car, he was very good on those.

[harry]

No mention of repairs "on the wheel".

[Richard]

Maybe because of this: "b) Remove the tyre from the wheel and thoroughly inspect, both internally and externally. "

BICBW, which I doubt very much.

[T i m]

On Sun, 27 Jan 2019 00:24:20 +0000, Steve Walker [e-mail]> wrote: <snip>

The question (in a practical sense) was actually rhetorical Steve as I currently use such a solution on most of our vehicles (Punctureseal). ;-)

It works in the same way as the Contiseal tyres:

Not only do I have it pre-installed in most of our vehicles (esp motorcycles and trailers), I have also used it with 100% success on both car and motorcycle tyres as a remedial repair, a repair that has in all cases lasted until the tyre was worn out. <shrug>

YMMV of course. ;-)

Cheers, T i m

[T i m]

<snip>

Thanks but not really (in a totally practical sense).

See, that's like idea that ducking a woman to see if she drowns or not to determine if she's a witch (and doing so because 'them's the rules').

If you use a repair solution that has specific limitations and consider that the *only* solution then you are likely to throw away many tyres that could otherwise, if 'repaired' using a less restrictive process, could go on safely until they wear out.

The problem with an old fashioned (as I see it) repair is that the increased flexing at the junction between the tread and the sidewall compromises said 'old fashioned' repairs in a way it doesn't affect some others.

So, you have a nail go though the edge of the tread, between the cords (for the benefit of this 'best case' example) and penetrate into the tyre, causing a puncture, because it would make 'patching' the inside of the tyre in that location by the use of a patch (with or without plug) *to just stop the air coming out*, unreliable, they don't do it.

OOI, say you did repair a tyre that way and it failed, and the air came out, how would that be different to what happened when you got the puncture in the first place?

But what if you repair the tyre in a way that remains flexible, can't overheat and hence fail ... ?

What would worry me though with that scenario was 'how long was the tyre run partially deflated', even if it was in the middle of the tread area and repaired 'officially'?

With Punctureseal (and I'm only referencing that here because I have many years of practical experience of / with it) , the object causing the puncture is often immediately ejected (because of the lubricative properties of the sealant), the sealant pushed into the hole by the air pressure in the tyre and the pull of centripetal force and it clever chemical make-up then blocking the hole, blocking the leak of air and preventing the ingress of water of dirt into the hole from the outside.

No long term soft running (on vehicles without TPS etc) with potential overheating of the carcase and no incontinence and danger involved when changing a tyre on the hard shoulder of a motorway at night and in the rain and a tyre that can both live out it's natural life *and* be continuously protected against any other such punctures as well! ;-)

Again, I'm not advocating any one else use such solutions, just that I don't have to worry about me, my wife or daughter getting caught out by something as simple as a stupid puncture or the cost of a replacement tyre when none was actually (ITRW) needed. ;-)

Cheers, T i m

[Richard]

I guess the DIY solutions are acceptable for the individual. However, any business providing a repair service *has* to follow rules if they do not wish to avoid lawsuits.

In my case, I consider the tyres to be the most important safety consideration for our cars. I may have wasted hundreds of pounds over the years in replacements, but I value lives over money.

[Dave Plowman (News)]

If the fragile part of the carcass has been damaged - like the side wall - repairing just the rubber ain't going to restore the structure.

[Chris Bartram]

Well, I'd hope for £15 or so. Less at an independent. Think my last one was £10.