Cups on 996 GT3 RS - Track Pressures

[drhildr]

May I ask for views on track pressures for Cups on a 996 GT3 RS?

[anonymous-user]

31 psi all round HOT

Paul

[Steve Rance]

2.1 bar all round hot. Dont forget to pump them up on the way home or before you leave the track or the left right will puncture as the pressure drops and the sidewall deforms.

Steve R

[flemke]

FWIW, I'd try a bit less in the fronts than in the rears - 1 or 2 psi.

[drhildr]

Hi Steve - is that the rear right or front right and what do you pump them up to? I have had a rear offside Corsa Motorsport fail on the way home on the Rug GT2 - you may have just have highlighted why! Sorry couldn't stretch to your car!

Steve Rance said:

2.1 bar all round hot. Dont forget to pump them up on the way home or before you leave the track or the left right will puncture as the pressure drops and the sidewall deforms.

Steve R

[Steve Rance]

drhildr said:

Hi Steve - is that the rear right or front right and what do you pump them up to? I have had a rear offside Corsa Motorsport fail on the way home on the Rug GT2 - you may have just have highlighted why! Sorry couldn't stretch to your car!

Steve Rance said:

2.1 bar all round hot. Dont forget to pump them up on the way home or before you leave the track or the left right will puncture as the pressure drops and the sidewall deforms.

Steve R

If it is a clockwise circuit, the passenger side rear, vice versa if it's an anti clockwise. Ie; the side that does the most work will be the side that is bled most and will have the lowest pressure when it cools down

[Sean Edwards]

Steve Rance said:

2.1 bar all round hot. Dont forget to pump them up on the way home or before you leave the track or the left right will puncture as the pressure drops and the sidewall deforms.

Steve R

Agreed.