What psi should I run on these Azenis? The car is just for street. Thanks

 

what size?

 

I, like George, run 215/45/16s. I run f/r 35/34.

 

I got 205/50R15s and run 33F/31R for streets.

Tryed them out at the autoX today.
1st run: 36/36 - <u>major</u> understeer! (93.xx sec)
2nd run: 35/39 - better but still understeered (91.xx sec)
3rd run: 35/41 - even better but still understeering (90.1x sec)

Overall these tyres are pretty good considering they are street tyres, but no where near the V700's!

yoshi - who wanted to try 35/45

 

Hey yoshi234,

Were you out at Hollywood park today. I stopped by and saw several Hondas. You must have been the guy with the EBP Si with Azenis.

CB

 

yoshi has an itr

 

Thanks Hybrid

yes, I have an ITR and I was parked about 3 cars over from that black Si. Mine is yellow and had #405 on it

yoshi - who made a mistake and signed up as 'time only' and not EP. No trophy for me now

 

Really? I always thought to prevent from "oversteering" you pump more air in the front. You should have oversteering pumping 35/41 with the rear tires all rounded up and all. Mabye the tire is not as grippy as you think it is.

 

I asked the local Falken motorsport rep the same question, and he advised 30/28psi F/R. That was for roadcourse work though, where the heat buildup after a lap or so will give you a big pressure rise...

 

i'm running 29psi/27psi. for 195/55/15

 

Where can i get a set of these Azenis from?

 

Wait a minute......and 91.xx sec Autocross? Wow! That must be hella fun!

 

hey yoshi, when i ran my wifey's civic si (dead friggin stock) in ES a month back, i ran my hoosiers on it. i had to run 38/50! to get it to oversteer. i think for general street driving you should have 2psi more in the front for general understeer safety.

 

http://www.onlinetires.com or http://www.vulcantire.com or at your local America's Tire...

I contacted Falken directly for retailers in my area...try that as well

 

[QUOTE]I am not presenting my pressures as ideal for autocrossing because I have never autocrossed the ITR; however, I am having a difficult time understanding why the difference between a road course and autocrossing would upset the laws of physics....

....so I await a logical explanation of why it's different, if someone can do that!
QUOTE]

you lost me george. are you asking why people like myself run higher pressures in the rear when autocrossing?

 

I would <u>not</u> run 35/41 out on a road course.
The autox course yesterday had lots of really tight decreasing radius turns. Thus I needed the backend to rotate easily, to negotiate the 20+ turns.

yoshi - who had his 1st "3 clean runs" yesterday

 

George, there's no way you can change the polar moment or weight distribution of a car by changing tire pressures!

What happens (by changing tire pressures) is that the contact patch changes, thereby allowing you to have one end or the other with more relative grip than the other. Upping the tire pressure will decrease the contact patch, ... allowing that end of the car to "slip" more than previously (since the added pressure lowers the patch area, limiting or reducing the lateral grip available at that end of the car).

If you were able to change the polar moment of a car by fudging with tire pressures then there's be no reason to put the engine in the middle or the back of a car to achieve that end (polar moment/weight distribution).

In summation, Yoshi had the right idea in upping the rear pressure bias in order to induce rotation (otherwise he's be running those 225/205 combos, again). HTH

 

At the local autocross I was running the fronts at 35psi, the backs at 39psi, got just the right amount of rotation for me...though I am still a "beginner" at the autocross scene, on the street I run 35F/33R. 215-45/16 on Mugen MF-10 +43mm with stock suspension, I now have "soft spots" on 2 of them, so they're sitting in the living room at the moment.

Austin

 

Lots of different responses. I have 205/50/15, should I just go with the manuals recommended psi?


[Modified by Double 0 Seven, 10:17 PM 11/20/2001]

 

Play around with it. That's how most of us deal with the "problem."

 

Same way for both. I run more air in back than I do in front, even with 400F/600R spring rates.

Warren

 

try 10/90 , guys with corvettes love that ration

its called a what? its like this business up front,party in the back
where is stlb friedmont?