craig_007
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| posted on 20/11/11 at 07:28 PM |
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Recutting tyre tread
Anyone had any experience with doing this, My Yokohama 048s are about on the barriers and I have access to a regrooving machine.
Is this possible do you think ?
I was going to do this today and thought I would ask the question first ?
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adithorp
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| posted on 20/11/11 at 07:37 PM |
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There's not enough tread depth to retread worn car tyres and you'd be through to the casing... and it's not legal.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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Ben_Copeland
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| posted on 20/11/11 at 07:49 PM |
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quote:
Originally posted by adithorp
There's not enough tread depth to retread worn car tyres and you'd be through to the casing... and it's not legal.
Agreed
Ben
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craig_007
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| posted on 20/11/11 at 07:51 PM |
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Magic guys thanks for that.
I'll just keep them for the track I think, Glad I thought twice about in feet first.
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DixieTheKid
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| posted on 20/11/11 at 07:56 PM |
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Truck/lorry tyres yes, cars tyres no. As above, thier is simply not enough meat.
[Edited on 20/11/11 by DixieTheKid]
COS IT'S Worth IT
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Peteff
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| posted on 20/11/11 at 09:12 PM |
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I remember cutting some lorry tyres at a yard my friend ran and I lost my voice for two days after, serious need of a mask for that job.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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daviep
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| posted on 20/11/11 at 09:33 PM |
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quote:
Originally posted by Peteff
I remember cutting some lorry tyres at a yard my friend ran and I lost my voice for two days after, serious need of a mask for that job.
Were you cutting them with a proper hot wire type tyre cutter?
I've done/do loads of tyres and have never had a problem with smoke or fumes?
Davie
“A truly great library contains something in it to offend everyone.”
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DixieTheKid
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| posted on 20/11/11 at 09:44 PM |
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quote:
Originally posted by Peteff
I remember cutting some lorry tyres at a yard my friend ran and I lost my voice for two days after, serious need of a mask for that job.
+1, when we have the truck tyres done there is next to no smoke at all? Its just like an angled hot knife.
COS IT'S Worth IT
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paulf
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| posted on 20/11/11 at 10:10 PM |
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Whilst I agree with the above comments about not doing it I did once work for a cheap skate boss who had a tyre cutter and he regularly used to re-cut
car tyres to gain an extra couple of mm, obviously illegally.He used to maintain that as long as the cords weren't exposed then the thickness of
the rubber made little difference to the strength of the tyre.
I was never to sure myself but he never had any problems caused by doing so, and I would think it probably ok for track use.
Paul
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Peteff
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| posted on 20/11/11 at 11:16 PM |
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quote:
Originally posted by DixieTheKid
quote:
Originally posted by Peteff
I remember cutting some lorry tyres at a yard my friend ran and I lost my voice for two days after, serious need of a mask for that job.
+1, when we have the truck tyres done there is next to no smoke at all? Its just like an angled hot knife.
This was like a hot knife but it was over 30 years ago. It had different blades for cut depths and smoked like nobody's business
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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hillbillyracer
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| posted on 20/11/11 at 11:58 PM |
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I've done it a bit on commercial tyres & not had problems with smoke or fumes either, a fair smell but nothing beyond that. I found it
quite a satisfying job but wouldn't want to do it all day!
It'd be hard to cut them good enough so that you couldn't tell it had been done, if there was an accident caused by them it'd soon
be found out.
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skodaman
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| posted on 21/11/11 at 12:19 AM |
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Done it on rear motorbike tyre to get through mot. I cringe at the thought of it now but in my defence I was only 17 at the time and it's over
30 years ago. Maybe not even illegal then but a dumb idea nonetheless.
Skodaman
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James
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| posted on 21/11/11 at 11:55 AM |
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I've often wondered why you see so many shredded lorry tyres along the motorways... including the one I nearly hit in the middle lane of a
motorway in torrential rain at about 1am a couple of years ago... (twitchy sphincter moment that was, I can tell you!  ) I guess this is one of the
reasons!!! 
[Edited on 21/11/11 by James]
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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hillbillyracer
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| posted on 21/11/11 at 08:23 PM |
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I would reckon the most likely reason for all the lorry blowouts you see on the motorway is the driver being unable to know he's got a puncture,
with plenty other wheels around the soft tyre the feel of things from the seat will be unchanged but the tyre will still heat up & let go after a
while. The first thing they'll know is when it tears the mudguard off!
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daviep
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| posted on 21/11/11 at 08:27 PM |
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quote:
Originally posted by James
I've often wondered why you see so many shredded lorry tyres along the motorways... including the one I nearly hit in the middle lane of a
motorway in torrential rain at about 1am a couple of years ago... (twitchy sphincter moment that was, I can tell you! ) I guess this is one of the
reasons!!!
[Edited on 21/11/11 by James]
Nearly all of the lorry tyres you see on the central reservation (or the middle lane ) are the tread layer from a remoulded tyre, where the new
tread layer has de-laminated from the carcass.
Re-treading or re-moulding (the same thing) are not the same as re-cutting. Most new (as in not remoulded) lorry tyres are designed to be re-cut,
there are special measurement holes moulded into the tyre to enable accurate measurement of how deep the cutter should be set.
Davie
“A truly great library contains something in it to offend everyone.”
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britishtrident
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| posted on 21/11/11 at 08:50 PM |
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With car tyres the rubber is built up in layers , the compound of first layer of rubber nearest the tread belt is not intended to provide
grip.
Interesting story regarding remoulds, back in the year dot (1950s) the great WDC Denny Hulme started out racing an MG TF he used to race on
freshly remoulded tyres from a local tyre remoulding company because he realised they were extra sticky.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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