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      01-27-2018, 07:48 PM   #1
BradR_Dizzle
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SURG4 Nexen: Track Use Tyre Pressures

Hello,
I have a 335i Coupe running:
235/40R18 Fronts
275/35R18 Rears
- curb weight about 1600kg/3520lbs

Power at crank: 275kw
Torque: 550nM (hence the fat rears)

First time using SUR4G's this coming weekend. Track sessions about 15min.

Any recommendations form those who have run these about starting cold pressures to achieve 42psi Hot? and also any other 'theories' on optimum hot pressure, 42 seems to be about right, but know others with other ideas (ie 38 psi hot all round etc)

Any experience out there who can comment?

Track surface temp if a sunny day should be 40-50 degrees C, in there somewhere
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Last edited by BradR_Dizzle; 01-27-2018 at 07:48 PM.. Reason: spelling mistake
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      02-01-2018, 05:37 PM   #2
BradR_Dizzle
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      02-01-2018, 06:28 PM   #3
tlow98
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Chart your tire rollover with some chalk and go from there. I used to run my PSS around 36 hot which was about 28 cold.
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      02-12-2018, 04:29 AM   #4
BradR_Dizzle
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good advice thank you. what rubber were you running at your 28 to 36 good fit for purpose?
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      02-12-2018, 01:24 PM   #5
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Originally Posted by BradR_Dizzle View Post
good advice thank you. what rubber were you running at your 28 to 36 good fit for purpose?
PSS= Michelin pilot super sports
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