AX tire pressure vs. tread roll, kumho V710 |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
AX tire pressure vs. tread roll, kumho V710 |
mskala |
Aug 11 2012, 03:40 PM
Post
#1
|
R Group: Members Posts: 1,925 Joined: 2-January 03 From: Massachusetts Member No.: 79 Region Association: None |
Question is this for autocross purposes: If I'm running 24PSI hot and the
tread wear triangles are still not touched, should I go lower? My thought is that either: 1) lower pressure will improve the contact patch and more grip will improve my time. or 2) lower pressure will make slaloms slower by having more flex/lean in the car which will increase my time. Using Kumho V710 215/40/16 on a 7.5" rim on my narrow -6. 21mm torsion bars in front and 180 pound springs in the rear, because that's as high as I want to go and still be driving this thing on the street regularly. Appreciate any input. Mark S. |
mskala |
Aug 11 2012, 06:51 PM
Post
#2
|
R Group: Members Posts: 1,925 Joined: 2-January 03 From: Massachusetts Member No.: 79 Region Association: None |
I've never measured the temps, but I know it seems to increase or at least not decrease grip
thru the whole group of runs (4 or 5 at a time). I have as much camber as possible with camber plate in front and lack of shims in the back. It's about -2.0. No rear bar, since I don't have an LSD. Although thinking of acquiring a torque-bias type for the future. |
Randal |
Aug 11 2012, 09:46 PM
Post
#3
|
Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
I've never measured the temps, but I know it seems to increase or at least not decrease grip thru the whole group of runs (4 or 5 at a time). I have as much camber as possible with camber plate in front and lack of shims in the back. It's about -2.0. No rear bar, since I don't have an LSD. Although thinking of acquiring a torque-bias type for the future. I personally don't like a rear bar, prefer instead to run heaver springs. TB differentials are the bomb. I can thank JP for that one....once you get one you'll never go back. (IMG:style_emoticons/default/biggrin.gif) There are some cheap IR temp sensors at places like HF. If you buy one and have one of your buddies measure the outside, middle and inside of each tire, following an Autox run, you will know whether or not your suspension settings are right. |
Lo-Fi Version | Time is now: 7th June 2024 - 10:53 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |