Trackday: OEM tire pressure?

nibble said:

I kind recommend this different by level of driving experience.... if you are first time, in DE1, with instructor, I'd recommend use 38 psi as on the door panel. but if you are more experienced, lower like 34 psi to begin with to monitor to see if end of your session reaches 38 ~ 40 psi. As for me, I start out with 31 psi. In WGI, /w 80+ F weather, car reached 41 psi / over 170F at the end of session.

So there's no straight answer since it's depends on many variables such as track temperature, track configuration, driver level, & ETC. but the goal is to reach around 38~40 psi at the end of the session in general. Again, this is very general statement and it may differ on many other variables.

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nibble said:

I kind recommend this different by level of driving experience.... if you are first time, in DE1, with instructor, I'd recommend use 38 psi as on the door panel. but if you are more experienced, lower like 34 psi to begin with to monitor to see if end of your session reaches 38 ~ 40 psi. As for me, I start out with 31 psi. In WGI, /w 80+ F weather, car reached 41 psi / over 170F at the end of session.

So there's no straight answer since it's depends on many variables such as track temperature, track configuration, driver level, & ETC. but the goal is to reach around 38~40 psi at the end of the session in general. Again, this is very general statement and it may differ on many other variables.

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nibble said:

The OEM tire, MPSS, when you run the tire like that, it also gums up to the point that it feels like it has flat spots. on the way home car vibrates so much that it feels like something is broken. And it didn't go away for long time... I finally wised up and ran along grooved line along the road (low speed) to get most of it off.

BTW, when do you shift? at 7K red line? at 6K? just curious.

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ArthurWick said:

Felt that vibration on my way back home, but it disappeared on the highway after 20 min. I ran in sport auto, it shifts around 6500 rpm, the box’s doing real good IMO, the downshifts are right on and it will keep the gear in along sweeper. I really like when it does a short shift when it figures that the wheels are beginning to spin.

I found the brakes were good, but not exceptional. If I was to do a lot of time attack I would definitely upgrade the brakes.

That said I ran 50.66 sec and a 2018 Z06 on Toyo R888R ran 51.31. Like I said short track wit a lot of tight curves, still a good feeling spanking that Vette’s ass

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Blaque Diamond Wheels said:

Oh wow! Congrats in smoking the Vette

Do you guys think the PS4S would do better than the PSS though?

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ArthurWick said:

Sure it will do better, PSS isn’t that great of a track tire IMO. Never had PS4 but all the reviews are great. They are the next tire I will buy when the PSS are done.

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