2018 Honda Civic Type R
265/35ZR-18 MICHELIN PILOT SPORT 4S XL
Where do I want to start for PSI for the track on a hot day in SC?
Where do I want to end up straight off the track on a hot day in SC?
Hit the paddock - take a reading - bleed off to ________ PSI.
Thanks

 

Is the alignment factory setting?

 

Every tire has its cold to hot zone.
R Comps depending on the track i give myself 4-9 lbs less depending again on the track.
Right hands vs left hands.
Tires after the first few laps should come up to proper inflation to my liking.
Again with me its all dependent on the track.
Before each session i check my temps and set them cold.
After each session i check to see where they ended up and how the car handled.
I also adjust for the outside air temp as well.

 

this!

learn to read a tire and see where the roll over is ending. adjust from there. I was running my 200TWs around 30-31psi.... and I run my RRs around 25psi. on a hot hot day I'd probably have to drop 1-2 PSI.

Assuming you are at CMP, its hard on tires and brakes so be prepared. Also check your gauges religiously on track. There are reports of several CTRs having heat soak issues. My buddy tracks his with zero issues, but better to be safe than sorry.

 

Thanks
This is actually AMSP and the cars first outing (not mine) so it will be an 8/10th sort of experience.
Plenty of time ahead to push it.
I'm aware of the heat soak issues and I'll keep an eye on things.
Shouldn't be a problem for 20 minutes at a time at 8/10ths...

 

I did a write up on my blog about this:

https://ej2trackrat.blogspot.com/201...-tire.html?m=1

The visual method has worked against me before. Saw shoulder wear on tire but my pyrometer showed camber and pressures were accurate. Ended up going up in spring rate and the issue was negated.

feel is the best tool imo. That and a notebook.

record ambient temp
cold tire press
hot tire press
driving impression
change as needed

 

Dilbones: Thanks!
Weird that this seems to be a foreign language question.
I posted it on a few other forums and got crickets...
It is just so important and can't believe people overlook it.
The other hard part to learn is that all 4 tires may well have a different PSI straight off the track.
You still want to bleed them down to the same amount to end up at the proper operating track temperature.
Recommended appears to be 35 so I think I'll start at 30 and see how it goes.
I have a pretty good 12V compressor with me so I can play around a bit.

 

Its not that it is a foreign language... In a competitive arena those are tricks of the trade and aren't let out of the bag easily.
For the most part here in this forum although not very much as it used to be the people who posted here were racers who did wheel to wheel with one another.
Spring rates,TP's,alignments, suspension tweaks etc are your edge over your competition.
You never let those secrets out of your bag. At least not easilly.
Probably why if you searched google using honda-tech in the search string you got back generalities and not specifics.
Honestly I always asked competitors questions while at the track, some were wiling to help some clammed up.
Bottom line its your car and you have your driving style.
As I was told you have to set up your car to your ability and your style of driving.
Its not easy to fill in your blanks when you dont know where to start.
Keep plugging ask those who you always see at the track someone will part with the information.