Tyre sealant stuff - which one?

Because they dont know if its going to be you, me or my mum driving it. And they are scared or getting sued.

As above.

Thats untrue. Its easy toi tell. At least for many. If you are my granny then fine as I said its up to you. The tyre pressure monitors are cheap anyway. I dont need one.

Of course they do But as I say most people that are "aware" and have a good sense of "feel" and can tell if you have a flat one easily. But maybe my mum couldnt.

Thats also debatable. There are many assmetric tyres that are matked outside only. They are not mirror images. So on one side even when fitted correctly the water clearing characteristics get reversed! Its mostly "fashion". I and many others have fitted bike tyres reversed with no problems, many club racers do. Most tracks wear out the right side first!

It may wrap but this is a typical example. These when fitted correctly effectively sift the water inwards on one side and outwards on the other. They are effectively running reversed on the left side of the car. So it cant actually make any difference which way you fit/use them! They are always wrong anyway...

Likewise, I cannot see how this is

That would only stand up in court if the tyre was found to be substantially under inflated. And that would be true for NON run flat tyres too!

Yea the Vee was very sensitive to tyre pressures, as was the 206. Well, when I say, very sensitive, I noticed when one was 5 psi out - so whether that's me or the car, who knows. It was a car I knew very well though. I've yet to have a tyre lose any noticeable PSI on the R27. I haven't felt it, and the pressures were actually checked last week and they were all still 30 to 32 psi.

Fitting asymmetric tyres incorrectly is an automatic MOT failure, so I'm not sure how debatable it is.

"f. a tyre not fitted in compliance with the manufacturers sidewall instruction, eg an asymmetric tyre with a sidewall marked ?outer? fitted with the marking to the inner side of the wheel"

I know I'd prefer not to be in a position where I have to fight my insurer in court. Particularly, as any "legal cover" on my insurance probably doesn't cover me against them!

"You should never retrofit a runflat tyre to a vehicle without a TPMS" RoSPA

European Tyre and Rim Technical Organisation draft regulations for the UN: "Moreover it shall be clearly specified by a new statement in paragraph 5.1 that vehicles can be equipped with a ?run-flat system? only if they are also equipped with an effective tyre pressure monitoring system and a runflat monitoring system."

OICA (International Organisation of Motor Vehicle Manufacturers) suggested requirement: "If the vehicle is equipped with Run-Flat Tyres, then a signal warning the driver of the runflat condition is mandatory"

I'm sure that an insurer would claim that it's an undeclared modification to the vehicle, which if they had been informed of it, would have refused cover. The specification of the tyres significantly differ from those which were originally fitted, or recommended for the vehicle. The tyre manufacturer would side with the insurer in this instance of fitting run-flat tyres to a vehicle which does not have a pressure monitoring system (see quote above). I would also expect that the vehicle manufacturer would also do the same (see quote above from the OICA). Based on that, I could see they would legitimately say that you were not covered - particularly if the accident had *any* question that the tyres could have influenced the ability to stop/avoid.

D

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember "Depresion" saying something like:

Aye, but they're full of shit.