B24

rikkir

Knightrous
I was running a cold pressure of 33 psi front and 35 psi rear with my RS-RR's on the advice provided by my suspension guy.

What were the hot pressures then?
Seems like they would be a bit high, but tbh i haven't really got a clue... I just hit the track and hope for the best lol.
Is there anyone on this forum that has any recommendations on tyre pressures for the track?

I ran RSRR at 32 hot on all four. It was ok. I don't think I would go any less.  

Yeah, I think the fronts need to come up a bit, hopefully it'll reduce the understeer I was having...

As with the pressures Knightrous is using, rears should always be around 3-4psi more than fronts for an MR2.

rikkir
 
What were the hot pressures then?

I never got around to playing with pressures at the event, so I'm not sure what they were hot. 
The car was nice to drive so I didn't fiddle with it.

There's science and stuff surrounding this...
Nitrogen + 32/36 on street tyres,
Nitrogen + 24/27 on R888s.
 
Negligible temperature difference after rounds.
 
'Air' + 32/36 ended up at 39/44 (overheated) after one session...
 
Things like sidewall thickness (ply), composition, etc. will all play their parts.

I found my A050's were happy at 30psi all round hot. Any higher and they became slipery.

Ive also been experimenting on dropping the left side tyre pressures down by 1-2psi on tracks with more right hand corners. So far i have noticed a small improvement .

However these are not street tyres obviously.... its trial and error really

Wow, i haven't done an update in ages...
I've recently replaced brake rotors and brake pads and discovered the rear wheel bearings are stuffed...
https://www.youtube.com/watch?v=D6OM_wEjJw0&feature=youtu.be
 

Always a good upgrade before a track day. See you soon.