>> Run flats seem the ideal solution. Why do other manufacturers mono addopt them? Is it
>> just cost?
>>
I had wondered that and was told that they are more expensive and a few pounds over a few hundred thousand vehicles soon adds up.
I was also told that the ride dynamics are different from softer side walled tyres and may impact the overall ride which needs to be countered by suspension set up.
I had a work provided BMW 3 series diesel when all BMWs were provided with run flats, except for the specific model given to me it seemed!
The tyre depot were perplexed when it went in for a new set as their computer insisted it needed run-flats.
It was a fine car but it did tend to pull forward when sitting at a stop with clutch disengaged (not a situation where neutral was appropriate).
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