under steer

howyhowy · 07-27-2006, 07:36 PM

So I noticed my 2007 GTvert under-steers a lot compared to my 2002 GT (with both the original 17" and the new 18" rims). What are the options for getting my car to over-steer a little so I can steer with the gas pedal again? I imagine lowering the front or just putting bigger diameter tires on the back would help. I was thinking of putting some big ass (outer diameter) tires just on the back to give it that 70's dragster look that nobody seems to like anymore.
-howy

Hiboost · 07-28-2006, 12:24 AM

Wider tires in the rear will increase the oversteer.

Put a larger sway bar on to increase turn in. Call Nancy at Hellwig for the Group buy price...She will give you a great deal. The Hellwigs are also adjustable to tune it if you want to play more.

Birdieman4 · 07-28-2006, 01:48 PM

There are a lot of diffferent ways to tackle understeer in mustangs. But one thing to remember is that it is still a stang, and it WILL understeer some, even with the most in suspension mods. Because it's a vert, the first thing you should do is add subframe connectors. Lowering will help, as will swaybars, but better rubber will help a lot. You can balance your understeer with oversteer, using your right foot. That's how you do it. Practice trail braking through apex's as well.

howyhowy · 07-28-2006, 03:20 PM

Quote:

ORIGINAL: Birdieman4 - You can balance your understeer with oversteer, using your right foot. That's how you do it. Practice trail braking through apex's as well.

My 2002 GTvert oversteered nicely, the 07 seems to /really/ understeer by comparison, so trailing throttle thru a tight corner is needed just to keep the front tires connected.
-howy

Justice · 08-03-2006, 06:38 AM

Understeer is deemed safer than oversteer by car manufacturers. So I bet all the rear wheel drive cars get set up in a specific way so they start to understeer before starting to oversteer.

But then again, when I gunned it in a corner I was startled by starting a small power slide even with TCS on... So oversteer, and therefore steering with your gas pedal is entirely possible.

I never noticed the tendency to understeer, but that is most likely because I always stay on the power in corners, keeping the weight balanced more to the rear.

Dumpweed · 08-03-2006, 02:29 PM

A quick and cheap way would be to play around with the PSI in your front tires...i THINK if you raise the PSI in the front it might oversteer more. its one way or the other. i have a really awesome suspension book that goes into detail on all sorts of stuff like that, but a buddy has it right now.

MBDiagMan · 08-04-2006, 03:08 PM

I would strongly recommend that you put on the stiffest rear sway bar that you can find and leave the front bar in place. Stiffening the rear bar takes out some understeer, while stiffening the front bar ADDS understeer. Try it!

Good luck,

mustangman02232 · 08-04-2006, 07:37 PM

4.10/4.30s and a heavier right foot

MBDiagMan · 08-05-2006, 03:53 PM

"4.10/4.30s and a heavier right foot" LOL

Yep, that is definitely one way, and probably the most fun way to compensate for understeer. This comment reminded me of the used Boss 429 that I test drove in about 1973. That big block engine was great in a straight line, but handling wise made a pig out of the car. This nose heaviness, however, was easily and very entertainingly made up for with the cars easy ability to steer with the throttle, sprint car style.

The new Cobra will be much the same as the Boss 429. By using the iron, SC 5.4 the car is a handling pig because of its nose heaviness, but I'm sure that if tire wear is no object, it will be very fun to "remove the understeer with proper throttle application."

As far as I'm concerned, if I had the money to buy a "Superstang" I would prefer one of Roush's most expensive cars over the Cobra. He has chosen to SC the aluminum, 3 valve 4.6 in order to retain front/rear weight bias that provides for better handling.

My $0.02,