Optimium tyre pressure F10 on 19"

[Welshbeef]

I keep playing round with the pressure trying to get the perfect set up on my F10 but can never seem to get it right.

Too low it' wobbles in corners and gives zero confidence
Too hard it's crashy and the tears seems to bounce more/axle tramp when on the accelerator hard
Middle just cannot get it right.

Also the split front to rear.

Would appreciate input from others.

[Welshbeef]

http://www.puretyre.co.uk/bmw-5-series-tyre-pressu...

Looking at this im confused is it 2.2 front and 2.7 rear for 19"?

[Welshbeef]

Monty Python said:

Unless you find someone with the same tyres, any figures you get won't be "perfect".

Michellin Pilot sport run flats OEM tyre.

[Welshbeef]

Monty Python said:

What have you tried so far?

Currently I'm trying out 2.7 & 3.1

[Welshbeef]

Jobbo said:

Looks like 2.2 front, 2.3 rear to me - you're on the 275 section rears I assume?

I have to say they are the most ludicrously complicated labels on any car. I saw a discussion about them on a BMW forum where somebody was saying they were logical because they grouped together tyres which have the same pressure. Personally, I'd rather they showed the tyre size options clearly even if it meant duplicating the text for the pressure.

Yes - tennis court rollers in the rear


I couldn't make head nor tail of it.

2.2 & 2.3 it is then.

[Welshbeef]

philmots said:

Put a photo up of the sticker and I'll see how i make it out.

You're doing them from cold too, yeah?

Issue I had

[Welshbeef]

nickfrog said:

I would ditch the run flats in the first place.

Given they have 6mm and are only a year old Michelin Pilot sport 2 which according to the BMW invoice which came with the car cost in the region of £1.1-1.2k. I'll be keeping them until they are work out which at current wear rate will be a further 2+ years.