New car has run flat tyres and no spare. Is it at all possible to repair a puncture on these things ?

I notice BMW is selling insurance for them.

At a price.

A BMW price.

En el artículo ,
fred escribió:

uk.rec.cars.maintenance is that way -----------

New car has run flat tyres and no spare. Is it at all possible to repair a
puncture on these things ?

Most Kwik****-type tyre places will tell you no. I go to a local one run
by a couple of Polish lads who will do it for folding stuff and no
questions asked.

I notice BMW is selling insurance for them.

They sell insurance for everything, the salesweasel creams off a massive
commission.

--
(\_/)
(='.'=)
(")_(")

On Tue, 11 Sep 2012 17:07:17 +0100, Mike Tomlinson wrote:

New car has run flat tyres and no spare. Is it at all possible to
repair a puncture on these things ?

Most Kwik****-type tyre places will tell you no. I go to a local one
run by a couple of Polish lads who will do it for folding stuff and no
questions asked.

Depends how flat it has been run. I wouldn't be to happy about reusing a
run flat that had really been run flat as opposed to "just a bit soft"
due to a slow puncture.

IIRC a run flat is constructed such that the inner surfaces of the tyre
meet under the rim edge should the air pressure become too low.

The car makers use 'em so they don't ahve to supply an expensive spare
rim and and tyre, even a "Qspace saver". The PR uses a "safety" hook to
hang the reason on, ie safer in the case of a hi speed blow out. The down
side is the limited speed, and range in "flat" mode, not much more
50mph/50miles and that writes the tyre off. Oh and they tend to have a
higher rolling resistance so putting up the MPG...

--
Cheers
Dave.

On 11/09/2012 14:28, fred wrote:
New car has run flat tyres and no spare. Is it at all possible to repair a puncture on these things ?

I notice BMW is selling insurance for them.

At a price.

A BMW price.

I think that you can repair them, but only if you haven't run on them
while flat - which rather defeats the purpose. I'd much rather have a spare.

SteveW

Dave Liquorice wrote:
On Tue, 11 Sep 2012 17:07:17 +0100, Mike Tomlinson wrote:

New car has run flat tyres and no spare. Is it at all possible to
repair a puncture on these things ?
Most Kwik****-type tyre places will tell you no. I go to a local one
run by a couple of Polish lads who will do it for folding stuff and no
questions asked.

Depends how flat it has been run. I wouldn't be to happy about reusing a
run flat that had really been run flat as opposed to "just a bit soft"
due to a slow puncture.

IIRC a run flat is constructed such that the inner surfaces of the tyre
meet under the rim edge should the air pressure become too low.

The car makers use 'em so they don't ahve to supply an expensive spare
rim and and tyre, even a "Qspace saver". The PR uses a "safety" hook to
hang the reason on, ie safer in the case of a hi speed blow out. The down
side is the limited speed, and range in "flat" mode, not much more
50mph/50miles and that writes the tyre off. Oh and they tend to have a
higher rolling resistance so putting up the MPG...

I probably wouldn't run ANY tyre that had been run flat.

Did limp a mile home on one, but it was toast and so was the alloy wheel
it was on. Thank you Council for that pothole

--
Ineptocracy

(in-ep-toc-ra-cy) €“ a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.

On 11/09/2012 18:04, Dave Liquorice wrote:
On Tue, 11 Sep 2012 17:07:17 +0100, Mike Tomlinson wrote:

New car has run flat tyres and no spare. Is it at all possible to
repair a puncture on these things ?

Most Kwik****-type tyre places will tell you no. I go to a local one
run by a couple of Polish lads who will do it for folding stuff and no
questions asked.

Depends how flat it has been run. I wouldn't be to happy about reusing a
run flat that had really been run flat as opposed to "just a bit soft"
due to a slow puncture.

IIRC a run flat is constructed such that the inner surfaces of the tyre
meet under the rim edge should the air pressure become too low.

The car makers use 'em so they don't ahve to supply an expensive spare
rim and and tyre, even a "Qspace saver". The PR uses a "safety" hook to
hang the reason on, ie safer in the case of a hi speed blow out. The down
side is the limited speed, and range in "flat" mode, not much more
50mph/50miles and that writes the tyre off. Oh and they tend to have a
higher rolling resistance so putting up the MPG...


I was looking at a new Mini the other day, and at least as far as I
could tell, it had normal tyres, no spare, and a can of tyre weld and an
electric pump in the boot. This was factory spec.

As it happens I've changed the runflats on my own Mini to normal tyres.
The ride is a lot better, but it's lost some of its sporty feel.

Rob

On Tue, 11 Sep 2012 18:58:42 +0100, The Natural Philosopher wrote:

I probably wouldn't run ANY tyre that had been run flat.

I certainly wouldn't with an ordinary tyre, mind you more than 1/2 a mile
at 5mph will kill and ordinary tyre.

Did limp a mile home on one, but it was toast and so was the alloy
wheel it was on. Thank you Council for that pothole

"on one" what? Run flat or ordinary tyre?

As for repairs run flat or not you should only repair if the hole is in
the center section of the tread, certainly not on the sholuders or side
walls.

--
Cheers
Dave.

Dave Liquorice wrote:
On Tue, 11 Sep 2012 18:58:42 +0100, The Natural Philosopher wrote:

I probably wouldn't run ANY tyre that had been run flat.

I certainly wouldn't with an ordinary tyre, mind you more than 1/2 a mile
at 5mph will kill and ordinary tyre.

Did limp a mile home on one, but it was toast and so was the alloy
wheel it was on. Thank you Council for that pothole

"on one" what? Run flat or ordinary tyre?


ordinary

As for repairs run flat or not you should only repair if the hole is in
the center section of the tread, certainly not on the sholuders or side
walls.


even that is somewhat frowned upon these days.


--
Ineptocracy

(in-ep-toc-ra-cy) €“ a system of government where the least capable to
lead are elected by the least capable of producing, and where the
members of society least likely to sustain themselves or succeed, are
rewarded with goods and services paid for by the confiscated wealth of a
diminishing number of producers.

En el artículo , RJH
escribió:

As it happens I've changed the runflats on my own Mini to normal tyres.

Have occasionally been tempted to do that on mine too, the ride is harsh
and the roads around here are ****e, but...

it's lost some of its sporty feel.

.... I like this more. The way it goes round corners like it's on rails
puts a big grin on my face

Interesting that BM is including tyre weld now. It developed a slow leak
on the rim of one of the wheels which the puncture repair places
couldn't fix. Can of tyre weld sorted it.

--
(\_/)
(='.'=)
(")_(")

On 12/09/2012 02:02, Mike Tomlinson wrote:
En el artículo , RJH
escribió:

As it happens I've changed the runflats on my own Mini to normal tyres.

Have occasionally been tempted to do that on mine too, the ride is harsh
and the roads around here are ****e, but...


Sheffield roads dictated choice. Damps potholes a lot better - less jarring.

it's lost some of its sporty feel.

... I like this more. The way it goes round corners like it's on rails
puts a big grin on my face


Well, it still does that :-)

Cruelly, it seems the 'direct' feel is one of the benefits of runflats,
to me at least. The forums tend to go for win-win (grip, handling,
noise, economy - 7000 miles for front runflats) with the swap. I've only
had them fitted 2 months/1000 miles, so early days.

Interesting that BM is including tyre weld now. It developed a slow leak
on the rim of one of the wheels which the puncture repair places
couldn't fix. Can of tyre weld sorted it.


Mine (2008) didn't have any.

Rob

On Wed, 12 Sep 2012 02:02:40 +0100, Mike Tomlinson wrote:

Interesting that BM is including tyre weld now. It developed a slow
leak on the rim of one of the wheels which the puncture repair places
couldn't fix. Can of tyre weld sorted it.

How much do the tyre places surcharge to replace tyres on a rim that has
been "tyre welded"?

--
Cheers
Dave.

On Wed, 12 Sep 2012 08:16:05 +0100, RJH wrote:

... 7000 miles for front runflats) ...

7,000 miles is that all! Thats 5k short of the service interval on my
car. If I only got that from a set of fronts I'd be taking 'em back as
"not fit for purpose", 30,000 miles is more acceptable.

--
Cheers
Dave.

En el artículo , RJH
escribió:

Mine (2008) didn't have any.

2003. Might be the alloy getting porous, though it's only been the one
wheel.

--
(\_/)
(='.'=)
(")_(")

En el artículo o.uk,
Dave Liquorice escribió:

How much do the tyre places surcharge to replace tyres on a rim that has
been "tyre welded"?

Dunno, but I'm sure I'll find out.

--
(\_/)
(='.'=)
(")_(")

In article ,
fred wrote:
New car has run flat tyres and no spare. Is it at all possible to repair
a puncture on these things ?

Yes - but more or less the same provisos apply as with conventional tyres
- only if the penetration is in certain defined areas.

I notice BMW is selling insurance for them.

At a price.

A BMW price.

BMW seem to think all their cars are bought by companies with money to
burn.

The only benefits of run flats is they save the maker the space/cost of a
spare. In every other way they are inferior to conventional tyres.

--
*Keep honking...I'm reloading.

Dave Plowman London SW
To e-mail, change noise into sound.

On 11/09/12 19:16, RJH wrote:
On 11/09/2012 18:04, Dave Liquorice wrote:

I was looking at a new Mini the other day, and at least as far as I
could tell, it had normal tyres, no spare, and a can of tyre weld and an
electric pump in the boot.

That's what my VW Touran has. At the last service (at about 4 yrs old)
they told me the tyre weld was out of date and needed replacing. About
40 quid they wanted for a new can! I told them I'd take the risk.

On 12/09/2012 09:06, Dave Liquorice wrote:
On Wed, 12 Sep 2012 02:02:40 +0100, Mike Tomlinson wrote:

Interesting that BM is including tyre weld now. It developed a slow
leak on the rim of one of the wheels which the puncture repair places
couldn't fix. Can of tyre weld sorted it.

How much do the tyre places surcharge to replace tyres on a rim that has
been "tyre welded"?

Probably a fortune, despite modern versions being water based and just
washing off (or so I've been told)!

SteveW

On 12/09/2012 12:07, pcb1962 wrote:
On 11/09/12 19:16, RJH wrote:
On 11/09/2012 18:04, Dave Liquorice wrote:

I was looking at a new Mini the other day, and at least as far as I
could tell, it had normal tyres, no spare, and a can of tyre weld and an
electric pump in the boot.

That's what my VW Touran has. At the last service (at about 4 yrs old)
they told me the tyre weld was out of date and needed replacing. About
40 quid they wanted for a new can! I told them I'd take the risk.

On both occassions where I've tried to use such a can, the hole has been
too big to seal. I think I'll just stick to a spare!

SteveW