996 spacesaver tyre

[crisisjez]

Got a flat tonight on the M25 in the Turbo.
Changed the rear for the spacesaver that had never even been out of its compartment and on inflation the sidewalls were totally perished and cracked. It did get me off the motorway but I was really worried it was going to give out the whole time.
First thing tomorrow I shall be replacing the tyre as the car is actually used more by the OH than me.
Just thought I'd give other 996 owners the heads up so they can make sure they arn't in the same or worse position.

Edited by crisisjez on Wednesday 8th August 23:26

[supermono]

Good advice indeed, you should always be prepared for punctures. My preparations were made worthwhile on the m25 too but in the daily car and were easier than a roadside wheel change.

Last time I was in the USA I bought a few of those 'slime' repair strings/ threads kits. You get a large pair of tee handles and combined with a 12v pump you can get fixed up and away within no time.

Worth a thought and I've had one of these in a bike tyre before and still rode it at 150mph without any problems.

Obviously you need to understand the risks of damaging a tyre by running it flat, and for some who don't know about such things you'll have to err to the side of caution. But gen up on tyres and it'll save you time, money and inconvenience.

SM

[crisisjez]

I ride trials bikes and we call them dog turds. Never actually considered using them on a car tyre though so worth a thought indeed.
Am fully expecting to get my trousers pulled down today.

[EvoSlayer]

crisisjez said:

Changed the rear for the spacesaver

Where did you manage to put the rear wheel?

[crisisjez]

EvoSlayer said:

crisisjez said:

Changed the rear for the spacesaver

Where did you manage to put the rear wheel?

I always leave a towel in the front and spread that out on the pax seat and seatbelted it into the seat.

[anonymous-user]

supermono said:

Good advice indeed, you should always be prepared for punctures. My preparations were made worthwhile on the m25 too but in the daily car and were easier than a roadside wheel change.

Last time I was in the USA I bought a few of those 'slime' repair strings/ threads kits. You get a large pair of tee handles and combined with a 12v pump you can get fixed up and away within no time.

Worth a thought and I've had one of these in a bike tyre before and still rode it at 150mph without any problems.

Obviously you need to understand the risks of damaging a tyre by running it flat, and for some who don't know about such things you'll have to err to the side of caution. But gen up on tyres and it'll save you time, money and inconvenience.

SM

Interesting that you seem to think you are 'genned' up about tyres but still would take stupid risks.

[tr7v8]

REALIST123 said:

supermono said:

Good advice indeed, you should always be prepared for punctures. My preparations were made worthwhile on the m25 too but in the daily car and were easier than a roadside wheel change.

Last time I was in the USA I bought a few of those 'slime' repair strings/ threads kits. You get a large pair of tee handles and combined with a 12v pump you can get fixed up and away within no time.

Worth a thought and I've had one of these in a bike tyre before and still rode it at 150mph without any problems.

Obviously you need to understand the risks of damaging a tyre by running it flat, and for some who don't know about such things you'll have to err to the side of caution. But gen up on tyres and it'll save you time, money and inconvenience.

SM

Interesting that you seem to think you are 'genned' up about tyres but still would take stupid risks.

Not sure what you mean by stupid risks? In my race mechanic days these were compulsory in the tool box & regular used on race rubber. All at massive speeds & loads & never without a problem.
The "rubber nail" type repair is relatively recent.

[EvoSlayer]

crisisjez said:

EvoSlayer said:

crisisjez said:

Changed the rear for the spacesaver

Where did you manage to put the rear wheel?

I always leave a towel in the front and spread that out on the pax seat and seatbelted it into the seat.

Ahh, not so easy if you have a passenger though.

[anonymous-user]

tr7v8 said:

REALIST123 said:

supermono said:

Good advice indeed, you should always be prepared for punctures. My preparations were made worthwhile on the m25 too but in the daily car and were easier than a roadside wheel change.

Last time I was in the USA I bought a few of those 'slime' repair strings/ threads kits. You get a large pair of tee handles and combined with a 12v pump you can get fixed up and away within no time.

Worth a thought and I've had one of these in a bike tyre before and still rode it at 150mph without any problems.

Obviously you need to understand the risks of damaging a tyre by running it flat, and for some who don't know about such things you'll have to err to the side of caution. But gen up on tyres and it'll save you time, money and inconvenience.

SM

Interesting that you seem to think you are 'genned' up about tyres but still would take stupid risks.

Not sure what you mean by stupid risks? In my race mechanic days these were compulsory in the tool box & regular used on race rubber. All at massive speeds & loads & never without a problem.
The "rubber nail" type repair is relatively recent.

'Rubber nail,? Do you mean the combination plug/patches that are widely used these days? If so, well they were commonly used in the 70s before they went out of fashion, in favour of cheaper nail hole patches. They became popular again in the 90s after the British Standard called for the injury channel to be filled during repair, which required a separate filler when using a patch.

If you are serious about using them in race rubber, then you are a fool. Racing tyres are structurally compromised by even a small injury, especially if run for any period under inflated. Were budgets that tight?

Having said that punctures in race tyres that don't almost immediately destroy the tyre are extremely rare in my experience so I tend to think you are being facetious?

For over 25 years I had a vested interest in seeing tyres repaired and I am extremely familiar with what can and can't be repaired and the associated risks. Taking a high speed rated motorcycle tyre to or close to its limit, after any repair, let alone a temporary repair, is taking a serious risk.

[996ttalot]

EvoSlayer said:

crisisjez said:

EvoSlayer said:

crisisjez said:

Changed the rear for the spacesaver

Where did you manage to put the rear wheel?

I always leave a towel in the front and spread that out on the pax seat and seatbelted it into the seat.

Ahh, not so easy if you have a passenger though.

And there was me thinking Jez was serious about speed - iirc the spare weighs around 40kg - one of the first things removed from my car - replaced with tyre weld thingy which should be good enough to get you home. Maybe the towel is there for when Jez wants to shake up a passenger

[EvoSlayer]

996ttalot said:

EvoSlayer said:

crisisjez said:

EvoSlayer said:

crisisjez said:

Changed the rear for the spacesaver

Where did you manage to put the rear wheel?

I always leave a towel in the front and spread that out on the pax seat and seatbelted it into the seat.

Ahh, not so easy if you have a passenger though.

And there was me thinking Jez was serious about speed - iirc the spare weighs around 40kg - one of the first things removed from my car - replaced with tyre weld thingy which should be good enough to get you home. Maybe the towel is there for when Jez wants to shake up a passenger

Yeah, my spare went a long time ago, a complete waste of time, it won't fit on the front with big brakes on and there's nowhere to put a rear wheel if you have a passenger.

[supermono]

REALIST123 said:

Interesting that you seem to think you are 'genned' up about tyres but still would take stupid risks.

Common response from people who don't know much about tyres.

SM

[anonymous-user]

supermono said:

REALIST123 said:

Interesting that you seem to think you are 'genned' up about tyres but still would take stupid risks.

Common response from people who don't know much about tyres.

SM

D'you think?

I spent 25 years in the tyre and tyre repair industry and chaired the British Standard Committee that wrote BS Au159 for over 15 of them. I worked with most of the major tyre manufacturers, researching tyre failure modes and the effects of damage and development of repair techniques.

Now what do you think you know about tyres?

[supermono]

REALIST123 said:

supermono said:

REALIST123 said:

Interesting that you seem to think you are 'genned' up about tyres but still would take stupid risks.

Common response from people who don't know much about tyres.

SM

D'you think?

I spent 25 years in the tyre and tyre repair industry and chaired the British Standard Committee that wrote BS Au159 for over 15 of them. I worked with most of the major tyre manufacturers, researching tyre failure modes and the effects of damage and development of repair techniques.

Now what do you think you know about tyres?

There's no "think" about it. I know that I've repaired at least half a dozen holes using this technology then used the tyre normally which includes deep into three figures and have had not the slightest hint of a problem. That's real knowledge learned from real world experience that is and therefore indisputable.

I also know that provided the tyre isn't overheated by running it flat, a hole (in the tread area) doesn't affect the integrity of a road tyre a jot, even up to a wound larger than the technology I use is capable of fixing.

But as a 25 year veteran of the puncture repair business, would anyone really expect you to support free at home tyre repairs?

SM

[anonymous-user]

supermono said:

REALIST123 said:

supermono said:

REALIST123 said:

Interesting that you seem to think you are 'genned' up about tyres but still would take stupid risks.

Common response from people who don't know much about tyres.

SM

D'you think?

I spent 25 years in the tyre and tyre repair industry and chaired the British Standard Committee that wrote BS Au159 for over 15 of them. I worked with most of the major tyre manufacturers, researching tyre failure modes and the effects of damage and development of repair techniques.

Now what do you think you know about tyres?

There's no "think" about it. I know that I've repaired at least half a dozen holes using this technology then used the tyre normally which includes deep into three figures and have had not the slightest hint of a problem. That's real knowledge learned from real world experience that is and therefore indisputable.

I also know that provided the tyre isn't overheated by running it flat, a hole (in the tread area) doesn't affect the integrity of a road tyre a jot, even up to a wound larger than the technology I use is capable of fixing.

But as a 25 year veteran of the puncture repair business, would anyone really expect you to support free at home tyre repairs?

SM

Half a dozen repairs eh?

By the way run flat damage is not related to overheating, it can be caused way before a tyre does that. The tyre doesn't need to even be 'flat' in order to sustain the damage.

You are right to say that the tyres integrity is not impaired by a hole in the tread, within reason, but that misses the point. In any case, that does not always apply to high performance M/c tyres, my original point. You check that with the manufacturers if you like, or are they biased too?

Externally applied repairs should never be treated as permanent and a permanent repair should be made, according to well accepted standards, before putting the tyre under any significant load.

You have been OK so far. Many have not been so lucky.

[Pugley]

EvoSlayer said:

Ahh, not so easy if you have a passenger though.

Get your priorities right.

If you need to nurse a damaged tyre to the nearest kwik fit, the passenger can squeeze in the back

[JackieTreehorn]

Pugley said:

Get your priorities right.

If you need to nurse a damaged tyre to the nearest kwik fit, the passenger can squeeze in the back

Eh? And put greasy hair marks on the back window? Make them walk.

[crisisjez]

996ttalot said:

EvoSlayer said:

crisisjez said:

EvoSlayer said:

crisisjez said:

Changed the rear for the spacesaver

Where did you manage to put the rear wheel?

I always leave a towel in the front and spread that out on the pax seat and seatbelted it into the seat.

Ahh, not so easy if you have a passenger though.

And there was me thinking Jez was serious about speed - iirc the spare weighs around 40kg - one of the first things removed from my car - replaced with tyre weld thingy which should be good enough to get you home. Maybe the towel is there for when Jez wants to shake up a passenger

It was my day off

[996ttalot]

crisisjez said:

996ttalot said:

EvoSlayer said:

crisisjez said:

EvoSlayer said:

crisisjez said:

Changed the rear for the spacesaver

Where did you manage to put the rear wheel?

I always leave a towel in the front and spread that out on the pax seat and seatbelted it into the seat.

Ahh, not so easy if you have a passenger though.

And there was me thinking Jez was serious about speed - iirc the spare weighs around 40kg - one of the first things removed from my car - replaced with tyre weld thingy which should be good enough to get you home. Maybe the towel is there for when Jez wants to shake up a passenger

It was my day off

It's alright mate, I was as well - it is 40lbs not kgs. Still a lot of weight to lose, just a shame it is not in the back.