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.
- posted
11 years ago
Run flat tyres
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- posted
11 years ago
En el artículo , fred escribió:
uk.rec.cars.maintenance is that way ----------->
Most KwikFuck-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.
They sell insurance for everything, the salesweasel creams off a massive commission.
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- posted
11 years ago
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...- Vote on answer
- posted
11 years ago
puncture on these things ?
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
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- posted
11 years ago
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
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- posted
11 years ago
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
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- posted
11 years ago
I certainly wouldn't with an ordinary tyre, mind you more than 1/2 a mile at 5mph will kill and ordinary tyre.
"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.
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- posted
11 years ago
ordinary
even that is somewhat frowned upon these days.
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- posted
11 years ago
En el artículo , RJH escribió:
Have occasionally been tempted to do that on mine too, the ride is harsh and the roads around here are s**te, but...
... 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.
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- posted
11 years ago
Sheffield roads dictated choice. Damps potholes a lot better - less jarring.
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.
Mine (2008) didn't have any.
Rob
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- posted
11 years ago
How much do the tyre places surcharge to replace tyres on a rim that has been "tyre welded"?
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- posted
11 years ago
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.
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- posted
11 years ago
En el artículo , RJH escribió:
2003. Might be the alloy getting porous, though it's only been the one wheel.- Vote on answer
- posted
11 years ago
En el artículo , Dave Liquorice escribió:
Dunno, but I'm sure I'll find out.
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- posted
11 years ago
Yes - but more or less the same provisos apply as with conventional tyres
- only if the penetration is in certain defined areas.
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.
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- posted
11 years ago
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.- Vote on answer
- posted
11 years ago
Probably a fortune, despite modern versions being water based and just washing off (or so I've been told)!
SteveW
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- posted
11 years ago
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