Arca_ex

iTrader: (10)

40PSI is not what I'm looking for... like I said it's different for every car. 40PSI isn't the be all end all tire pressure that is perfect for everyone lol.

Galen Darkmoon

AHHHH back to discussing racing, life is good.

swoope

iTrader: (5)

did not say it was.

it is a start before you learn about the tires you are running and the car and suspension you have under the car.. it is smarter than after a driving session for a newb that has to listen to an instructor to debrief to pull out a laser thermometer..

are we still talking about a guy that went to his first hpde day?

and i want to know what tires you are running that are not looking for ~40psi hot temp..

and if you are going to mention autocross take it to another thread..


mater of fact most of this crap should be in another thread..

good day.


beers

Arca_ex

iTrader: (10)

But you just said "39-40PSI is what you are looking for."

Then you said you didn't say that. Had too many beers or something?

swoope

iTrader: (5)

ok,

the 39 to 40 psi hot.. and the real info here is hot.

so the super special tires you have that are likely r compound. look for a hot pressure off what? or do you mostly autocross?

the hot pressue comes from an average from a few street tires that are good on track. and most r compound tires..

really most of the rx8s balance is close.. i have notes from roar racing, i would be happy to toss this question to eric meyer..

all you say is my info is bad for newbs, then, want to post up how to win hpde 4 with pressures of what without mentioning a tire?

once again, mention a tire or shut your hole! again, this thread was about hped 1. now if you want to post a how to set tire temps before hpde 1. jump on it..


if you want to do it . go with 34 front and 30 rear..

i guess you win. you are king of hpde.. yet you dont really know when the front end of the rx8 gets light stock..

amf.

beers

swoope

iTrader: (5)

39 to 40 psi hot covers up and past hpde 4.. really..

the term that might have been missed is hot!!!!!

beers

Arca_ex

iTrader: (10)

But that's the thing... 39 to 40 PSI hot is NOT the ideal tire pressure for everyone. Sure, it's YOUR ideal tire pressure, but it's not mine or anyone else's by default...

When I was running Star Specs (which are street tires) I was using 36PSI hot...

swoope

iTrader: (5)

yep,

you win. it is just stuff that works for people in hpde 1 or 2.

mention a better suggestion.. for people just learning..

god, i am trying to help the people to learn.. really in hpde 1 or 2 it does not matter. if you get the line right you are above all..

the big issue in this thread is the tire on the op car got over cooked.

so, **** or get of the pot. post up you super secret r compound tires that dont look for a 39 to 40 hot pressure and let us know..

or claim you lame *** auto cross ****..

and that you can feel front end down force from you splitter at what ever you think you feel it..

beers

Arca_ex

iTrader: (10)

Wow lmao...

Not really sure where you're getting that what DE you're driving in matters at all?

I ran Dunlop Star Specs at 36PSI hot front and 35PSI hot rear and the wear is right at the arrows on the sidewalls where it's supposed to be.
All I'm saying is that there are many other factors that affect what you run for your tire pressures besides just what tires you are using. The suspension, alignment, and weight of the car all play factors into the equation.

Assuming that 39-40PSI is the perfect tire pressure for everyone is just kind of ignorant that's all.

Also I don't understand why you're dissing autocross? What does having to "claim I lame *** auto cross ****" do?
I've only been to three autocross events in addition to the track events I do with NASA and the Time Attack series, it helps with making you more adaptable when driving new tracks and helps you work on low speed cornering strategies. It's not really my cup of tea but I certainly don't go around hating on the sport.

There's plenty of people at the track that run NT01's, Hoosiers, RA1's, and R1's (all of which are R-Comps) at 32-38PSI. That's the most common range from what I've seen after asking a lot of people that run in big bore and small bore race groups.

Oh and why are you talking about my splitter now? If you have any "insight" on that you can either PM me or take it to the correct thread.

swoope

iTrader: (5)

got it,

i went thought a set of star specs.. at ~ 39 to 40. on the track... all hot temps.. all the info above in your post is the temps.. but really all hot are looking for 39 to 40 psi hot temp... you post up a tire hot temp out there and they are there.. it seems you are talking out of your ***!

look the stuff up.. you have never run a r compound tire.......

good luck with that..


this helps this thread not at all.... comments before are on target.. stock tires are fine.. brakes will do ok... listen to you instructor is the smartest part...

beers

Spin9k

You guys argueing need to give it a rest... lol you're fighting over a couple psi for heavens sake! The op has probably gone to sleep, the conversation has turned into and that's always so boring. Try this instead.

For the OP let's get "Tire pressure" back into the INTERESTING AND FUN TOPIC it can be for any HPDE driver. It is far from cast in concrete for any tire, car, or track, as all these affect the 'right' pressure. What it IS... is a handling variable that's easily adjusted (and should be dutifully monitored during a track day) that offers the driver some control so they can play around with how the car moves as it handles cornering forces, looking for just that right combination to get the best lap. ENJOYABLE!!! THOUGHT PROVOKING!!!!! REWARDING!!!!

With that thought I present one for the better lessons in tire pressure management I have ever seen. Although it's the guide for a particular tire, the short, 6 page read is concise, and has real "How To" on checking pressures, adjusting pressures with the results for better handling, and has a fill-in-the-blank form to copy and record your own data while at the track. It's also a great start to a further googling on the subject. Enjoy

http://www.tirerack.com/images/pdf/warranty/BFG2.pdf

etzilon

Just to clarify... I got my answer. Thanks.

Arca_ex

iTrader: (10)

I wasn't going to post in this thread again but I couldn't help it... why do you keep making statements about me that you know nothing about? Are you secretly watching me at all of my events or something?

If I have no first hand experience with different types of tires, what are all these doing in my garage then?

dannobre

iTrader: (3)

Lol...looks like my garage

*infamous*

I just read through this thread and thought i'd offer some constructive input.
To give you an idea where I come from, I am a NASA instructor / TT driver / Race Group driver. I spend on average of half a day each track day weekend helping others setup their cars for success, whether its with Tire Pressure, suspension setup, or driving technique (DE1 students and TT drivers alike). I have enjoyed this sport for many many years and love sharing my experiences with others! So here it is, take it as you will.

Arca is on the right track though...Different vehicles will require different tire pressures and temperatures to achieve a maximum coefficient of friction. There is not one set PSI that will achieve the same result on all vehicles.

Example:
Our 2800lb RX7 FD required 34psi hot on all four corners to feel balanced and yield faster lap times.
Our 2300lb Integra requires 36psi hot in the front and 32psi hot in the rear
Our 2900lb NSX requires 32-33psi hot in the front and 30psi hot in the rear
We came to these conclusions through measuring temperature across the tire (10 degree's hotter on the inside 30% of the tire) and through roll / wear characteristics. At these pressures the tire is rolling sufficiently (using wear indicators) and achieving a even wear pattern (part of this is alignment setup obviously). We have varied from time to time off these baselines to achieve different end results, however these baselines for these cars (all using Nitto NT01) yield the best results.

My point is that all three cars are on the same tires with different weights and distribution of that weight. You'll notice the optimal pressures are not the same for any of these vehicles. Basically, no one pressure worked optimally for all three vehicles even though they use the same tire compound. So do your research, and make adjustments!

I hope the OP read through this and picked out one useful bit of information. Not a single car on the planet requires the SAME setup 100% of the time. You have to adjust for YOUR car and the conditions that are being presented to it.

Every time we take to the track, we use data from last time we were at THAT track as the setup will be different than the last track we were at. The best thing you can do is keep DATA and be sure to correspond the DATA with specific conditions and desires. Data doesn't have to be complicated either. It can be simply acknowledging a change. Example... If your car is understeering heavily, come off track ON A HOT LAP and have an assistant check tire pressures all around immediately. Lets say they were 40psi all around. Then reduce / change your pressures to say 37psi in the front HOT, and then retest. If the car stops understeering, TAKE NOTE for future reference that YOUR vehicle prefers 37psi to 40psi hot to achieve maximum grip in the front of the vehicle.

Ideally, i'd advise taking pressure information on all four corners HOT, and use a pyrometer and measure tire TEMPERATURE across the tread in 3 places (inside middle and outside). Typically speaking you want the tire about 5-10 degree's hotter on the inside edge. This will help you set your alignment. Feel free to inquire with a local specialist for more information here as it is abit more information than I care to post at this time!

Get out there and have fun! Back to the garage!

Ray
-Shift Fast Technologies

MazdaManiac

iTrader: (3)

OMG! Darkness is in da house!

*infamous*

Its been a year or so since i've logged onto any RX forums, but once I read the insanity here I had to say something mr. maniac.

MazdaManiac

iTrader: (3)

This activity is much more fun when you are drinking.

*infamous*

I suspect many of the posts here are fueled by alcohol and RAGE!

dannobre

iTrader: (3)

LOL....this forum is my outlet for drama Having 4X 20 something's isn't enough fun Quit drinking so this is it

I can't help but laugh at the tire pressure stuff...I will run different tire pressures on the same day as the track temperature changes. Every track, every setup requires paying attention to how the car handles, and to how the tires are running....and adjusting what you can to optimize grip

Why do you think there is so much time spent by the race teams pissing around trying to get that last 2%....it makes the difference between winning...and .........well you get the picture

There is no substitute for data in trying to go faster...so starting out with tire pressure and a pyrometer is a good place to start

At my local track...I run 3lbs more air in the front R tire than the left.......go figure

*infamous*

Exactly. You are 100% correct. It will ALWAYS be different.

MazdaManiac

iTrader: (3)

Pure RAGE from infected monkey blood!

I take all the air out of my tires and let them inflate themselves after a few laps.
Wait, I mean my competitor's tires...

alnielsen

iTrader: (4)

At times I choose to allow the ignorant to remain happy in their delusions.

MazdaManiac

iTrader: (3)

As if there were an option to cause them to feel otherwise...

Galen Darkmoon

This is so kool, but the one thing I have not seen addressed is wheel width.
We are running our tires on stock rims 9 inch? wider wheels may be in order.