ps2 tyre pressure help please

[Beedub]

hi peeps, just fitted my z4m with a new set of PS2s at my perrelli performance centre, im running genuine CSL wheels and CSL sizes so thats 235/35/19 and 265/30/19, can anyone running these tyres give me an idea of what tyre pressure to run, im looking to get a nice even wear if possible!! thanks in advance!

[JMRS4]

36PSI front and rear, that should be good. I run 37PSI front and rear using 265/40/18 and 245/40/18 these are my winter set on the new M3.
I will run the same pressures on the 19" going on this week.

[Beedub]

wow thats higher than i expected but, ill give it a go!!!

[Wiggwam]

Wow, that is high... run mine at 32 front and 34 rear when the car hasn't been moved for a while. My tyre sizes are identical to yours and I picked these up after doing some extensive research on here...

Have to say they were at 34fr and 36b at the weekend (as last checked in the cold a few weeks ago) and the car felt a tad harsh... it certainly felt much better when I dropped them all back down.

[Beedub]

wigg thats more like i was thinking but ill do some trial an error!!

[Wiggwam]

Remember the M3 is 200kg heavier than the Z so probably why is needs a few PSI more... Let me know how you get on though.

[JMRS4]

Fully loaded and/or high speed driving needs 38 front 40 Rear, be warned 32PSI is too low.

[Wiggwam]

Is that for the M3 though, as that does seem about right? Z4M owner manual has the standard wheel at 30/32 fr/rr... When fully loaded it recons move up to 33/38, but that is adding 265kg...

I would be surprised if changing to CSL rims would need that much more pressure... Anyone else have any views?

[dgm]

33 rear and 32 front is the best combination for me on 19's with PS2's or Cups. As others have said this isn't for an M3 so different pressures apply.

[Beedub]

im going to try 34r 32 fr. we'll see how this works then adjust as need be.