Should i change the tyre pressure when changing from RFTs

[_Rich_]

Quick question, I've removed the bridgstone RFT's and replaced them with michellin pilot super sports the grip is notably better but doing an overtake the rear didn't feel as solid as it used to, like a wobble (struggling to explain it)

So do i need to increase the pressure over what is standard for the RTS?

[Prinny]

Can't remember what the e92's RFT pressures should be, but I ran my go-flats at 38f, 41r

That was on 335d - maybe a psi lower on a non-iron block engine.

HTH.

[bigdom]

On my 535d touring, as it runs xl tyres, these do require more pressure. For mine, it's listed on the drivers door B pillar.

[Dannbodge]

The wobble is due to the change in softness of the side walls.
RFTS are rock hard to allow to drive on them flat, whereas non RFT are softer.

I run my non rfts at the same pressure as rfts

[Frances The Mute]

The inflation pressure should stay the same as that is what is required to carry the load as set by BMW. What has changed for you are the dynamic properties of the tyre.

Outside of losing the bead reinforcement (which gives you much less deflection of the sidewall) you also have brand new tyres fitted with a full complement of tread depth so you'll also experience block movement for the first ~1000 or so miles until they start to wear in conjunction with the geometry of your car.