Puncture Repaired Tyre Safe on Track?
Discussion
Hi there,
Need to seek expert advice on the following:
My Rear Left tyre had 1 pucture - now repaired.
My Rear Right tyre currently has 2 punctures - they are within the same half of the tyre but not within the same quarter. So In theory they are repairable.
The tyres are still okay for a track day and I wonder if it is safe to repair the 2 punctures and use them on track?
This is a serious safety issue and I'd appreciate if anyone who has experience on this can give me some pointers?
Cheers guys.
Need to seek expert advice on the following:
My Rear Left tyre had 1 pucture - now repaired.
My Rear Right tyre currently has 2 punctures - they are within the same half of the tyre but not within the same quarter. So In theory they are repairable.
The tyres are still okay for a track day and I wonder if it is safe to repair the 2 punctures and use them on track?
This is a serious safety issue and I'd appreciate if anyone who has experience on this can give me some pointers?
Cheers guys.
I got ten laps of the Nordschliefe out of a left front tyre filled with mousse. Pinched sidewall so irrepairable.
Pinched the sidewall getting on a ferry to cross the Rhein. Shot in a can full of mousse. Drove another 80km to Nuerburg, and decided to test it a little harder. It was cold and wet, and the tyre finally went down halfway through Galgenkopf on the tenth lap. I was impressed.
Properly patched tyres should be good to the rated speed of the tyre, to answer your question. Chances are on a trakc day you will not be reaching terminal velocity.
Pinched the sidewall getting on a ferry to cross the Rhein. Shot in a can full of mousse. Drove another 80km to Nuerburg, and decided to test it a little harder. It was cold and wet, and the tyre finally went down halfway through Galgenkopf on the tenth lap. I was impressed.
Properly patched tyres should be good to the rated speed of the tyre, to answer your question. Chances are on a trakc day you will not be reaching terminal velocity.
funkdude said:
Hi there,
Need to seek expert advice on the following:
My Rear Left tyre had 1 pucture - now repaired.
My Rear Right tyre currently has 2 punctures - they are within the same half of the tyre but not within the same quarter. So In theory they are repairable.
The tyres are still okay for a track day and I wonder if it is safe to repair the 2 punctures and use them on track?
This is a serious safety issue and I'd appreciate if anyone who has experience on this can give me some pointers?
Cheers guys.
If the issue was only a puncture, not a tear and the puncture was repaired using a proper "mushroom" and plugged and bonded into place, then I see no reason why it should noit be OK on track. A DOT approved repair is OK for motorway use and is MOT approved...Need to seek expert advice on the following:
My Rear Left tyre had 1 pucture - now repaired.
My Rear Right tyre currently has 2 punctures - they are within the same half of the tyre but not within the same quarter. So In theory they are repairable.
The tyres are still okay for a track day and I wonder if it is safe to repair the 2 punctures and use them on track?
This is a serious safety issue and I'd appreciate if anyone who has experience on this can give me some pointers?
Cheers guys.
Alternatively you could opt for a vulcanised repair: the sort which makes good the damage that 'experts' here say cant be mended. These are specialised repaier (& repairers) and youll probably have to leave the tyre to be cooked overnight in a large autoclave. Expect to pay about £15 in South Yorkshire: more in the South.
Just a word if you decide to replace your tyres. I am new track day's and had my second go this Saturday at Bedford,I Noticed my rear left was in a sorry state, so got it(the pair) replaced Saturday morning. Hit the track in the afternoon, big mistake, on my first flying lap the back become loose and i spun right in front of the pits, on an 85mph bend,we all lived, but the moral, Get some miles on new tyres before you get to the track.
I would say if they are repaired well, then they should be fine.Get yourself a tye pressure gauge and check them after each run,any drop should give you a warning of failure.
I would say if they are repaired well, then they should be fine.Get yourself a tye pressure gauge and check them after each run,any drop should give you a warning of failure.
Thanks for all the "expert" advice chaps.
The rear tyres are nearly worned with only about 1,000 - 2,000 miles left in them so I am thinking I can use them for their last time on the track day if repairing them is a safe option.
It should be repairable as there are simply 2 nails in the tyre - right at the very bottom in the middle - not on the side wall etc.
I am not worried about the air leaking from the "mushroom plug" - but I was told in order to repair the tyre you will need to drill a bigger hole in order to fit the plug in. In my case this will be 2 holes on one tyre.
Will this weaken the structure of the tyre - resulting in a potentially unsafe tyre for track use?
Thanks again!
The rear tyres are nearly worned with only about 1,000 - 2,000 miles left in them so I am thinking I can use them for their last time on the track day if repairing them is a safe option.
It should be repairable as there are simply 2 nails in the tyre - right at the very bottom in the middle - not on the side wall etc.
I am not worried about the air leaking from the "mushroom plug" - but I was told in order to repair the tyre you will need to drill a bigger hole in order to fit the plug in. In my case this will be 2 holes on one tyre.
Will this weaken the structure of the tyre - resulting in a potentially unsafe tyre for track use?
Thanks again!
RICYP said:
Just a word if you decide to replace your tyres. I am new track day's and had my second go this Saturday at Bedford,I Noticed my rear left was in a sorry state, so got it(the pair) replaced Saturday morning. Hit the track in the afternoon, big mistake, on my first flying lap the back become loose and i spun right in front of the pits, on an 85mph bend,we all lived, but the moral, Get some miles on new tyres before you get to the track.
I would say if they are repaired well, then they should be fine.Get yourself a tye pressure gauge and check them after each run,any drop should give you a warning of failure.
Thanks for the reminder RICYP, yes i am aware that new tyres may take a couple of hundred miles for it to be bedded in. THat is part of the reason why I'd like to find out whether I can repair my old tyres and use them before replacing them... I would say if they are repaired well, then they should be fine.Get yourself a tye pressure gauge and check them after each run,any drop should give you a warning of failure.
Having had a repaired tyre split from the repair (centre of tread) to the rim at nine-tee leptons on the M3 - there is a simple cost/benefit/risk decision to be made.
I always replace the tyre, with less than 1000 miles left on it, why would you risk the cost and consequences of an accident?
I always replace the tyre, with less than 1000 miles left on it, why would you risk the cost and consequences of an accident?
RICYP said:
Just a word if you decide to replace your tyres. I am new track day's and had my second go this Saturday at Bedford,I Noticed my rear left was in a sorry state, so got it(the pair) replaced Saturday morning. Hit the track in the afternoon, big mistake, on my first flying lap the back become loose and i spun right in front of the pits, on an 85mph bend,we all lived, but the moral, Get some miles on new tyres before you get to the track.
Band new tyres wont last long on track. As you found out not only will they be slippery due to the release compound on them but if you put them straight into a hard session straightaway they will wear very quickly. Putting them through a few moderate heat cycles over the first 200-300 miles will make them last a lot longer on track.
Davey S2 said:
RICYP said:
Just a word if you decide to replace your tyres. I am new track day's and had my second go this Saturday at Bedford,I Noticed my rear left was in a sorry state, so got it(the pair) replaced Saturday morning. Hit the track in the afternoon, big mistake, on my first flying lap the back become loose and i spun right in front of the pits, on an 85mph bend,we all lived, but the moral, Get some miles on new tyres before you get to the track.
Band new tyres wont last long on track. As you found out not only will they be slippery due to the release compound on them but if you put them straight into a hard session straightaway they will wear very quickly. Putting them through a few moderate heat cycles over the first 200-300 miles will make them last a lot longer on track.
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