Understeer Problem

Gunny · August 21st, 2007, 02:48 PM

I have quite a few suspension mods and recently experienced a problem. I took a turn pretty fast and the front started sliding while the wheel was turned (kind of like when you turn hard on ice/snow and the car does not turn as fast as it should). I believe this to be understeer and would like some experts to throw some ideas out on how to correct this. I have the D-Specs and they are set to 3 full turns down from the most stiff setting. The setting is the same at all four corners. Should the front be set less stiff than the back? Other thoughts?

stanglifemike · August 21st, 2007, 04:46 PM

I would think a little softer in the front would allow for more weight transfer to the fron to push the tires down for more traction up there.

TheUNZippee! · August 21st, 2007, 04:50 PM

Typically our cars do understeer. I'm sure there are suspension adjustments to make to reduce this, but our cars are heavier than previous generation Mustangs, and although they will pull better skidpad numbers and slalom times than the previous Mustangs, understeer is normal, depending on how hard you are pushing the car.

Check out road tests of our cars and you will see this.

You have to be careful how much you start playing with weight transfer, because then your next issue will be oversteer, where the ass end swings out on you.

Gunny · August 21st, 2007, 07:54 PM

Yeah, I've heard and now experienced the understear problem. Since it is a known problem, I have to believe people have done some things to mitigate it. Just curious.

TheUNZippee! · August 21st, 2007, 08:03 PM

Yeah I'm sure there are things you can do. When it comes to suspension work, though, I'm a complete noob at understanding the mechanics of adjusting & setting up a performance suspension.

I stumbled across this forum while looking for tips for you, not sure if it's any good, but check it out: Macgyvers

Gunny · August 21st, 2007, 08:10 PM

Thanks, Unzipped!

TheUNZippee! · August 21st, 2007, 08:10 PM

Anytime man

06RedfireGT · August 21st, 2007, 08:34 PM

swaybars will eliminate alot of the over/understeer and make the car more balanced.

Gunny · August 21st, 2007, 09:29 PM

Originally Posted by 06RedfireGT

swaybars will eliminate alot of the over/understeer and make the car more balanced.

I thought the swaybars would stiffen the ride even more?

06RedfireGT · August 21st, 2007, 10:52 PM

I don't think so.

TheDuke · August 22nd, 2007, 05:10 AM

Here is a site I came across that looks like it might help...

http://www.rallylights.com/other/stuning.htm

Gunny · August 22nd, 2007, 08:39 AM

Originally Posted by TheDuke

Here is a site I came across that looks like it might help...

http://www.rallylights.com/other/stuning.htm

Nice info! Thanks for that!

RyanHNT · August 22nd, 2007, 11:00 PM

Have you put on strut tower braces, when I put mine on it made a world of difference in control, the car remains level in tight turns at speed or excellaration, the way it feels to me is that instead of diving or lunging as it did before; it feels like the car is pulling itself through the turn.

I'm no expert but thats the way it worked for me, simple cheep mod. too.

06RedfireGT · August 23rd, 2007, 12:42 AM

You should be able to get rid of alot of the understeer by tuning your shocks and struts.

August 21st, 2007, 02:48 PM	#1
Gunny Regular Join Date: Jul 2006 Posts: 282 iTrader: 0 reviews	Understeer Problem I have quite a few suspension mods and recently experienced a problem. I took a turn pretty fast and the front started sliding while the wheel was turned (kind of like when you turn hard on ice/snow and the car does not turn as fast as it should). I believe this to be understeer and would like some experts to throw some ideas out on how to correct this. I have the D-Specs and they are set to 3 full turns down from the most stiff setting. The setting is the same at all four corners. Should the front be set less stiff than the back? Other thoughts? __________________ 2006 GT 5 Speed Convertible Whipple HO SC (461 RWHP / 444 Torque) 4.10 Gears Pypes O/R H-Pipe Borla Stingers Cat Back Exhaust Various suspension goodies For more info, visit: http://www.themorgansite.com/Mustang/mustang_info.htm

August 21st, 2007, 04:46 PM	#2
stanglifemike IBEATU 06 GT, 98 GT, & 93 Notch Join Date: Dec 2006 Location: Douglasville, GA Posts: 5,937 iTrader: 0 reviews	I would think a little softer in the front would allow for more weight transfer to the fron to push the tires down for more traction up there. __________________ 98 GT: some stuff 06 GT: more stuff 93 Notch: 4 cyl at birth, now 5.0 drivetrain and stock exterior and interior= True Sleeper Paxton/Vortech Crew Member #3 FRPP's #1 Dealer Injected Engineering BMR Suspension

August 21st, 2007, 07:54 PM	#4
Gunny Regular Join Date: Jul 2006 Posts: 282 iTrader: 0 reviews	Yeah, I've heard and now experienced the understear problem. Since it is a known problem, I have to believe people have done some things to mitigate it. Just curious. __________________ 2006 GT 5 Speed Convertible Whipple HO SC (461 RWHP / 444 Torque) 4.10 Gears Pypes O/R H-Pipe Borla Stingers Cat Back Exhaust Various suspension goodies For more info, visit: http://www.themorgansite.com/Mustang/mustang_info.htm

August 21st, 2007, 08:10 PM	#6
Gunny Regular Join Date: Jul 2006 Posts: 282 iTrader: 0 reviews	Thanks, Unzipped! __________________ 2006 GT 5 Speed Convertible Whipple HO SC (461 RWHP / 444 Torque) 4.10 Gears Pypes O/R H-Pipe Borla Stingers Cat Back Exhaust Various suspension goodies For more info, visit: http://www.themorgansite.com/Mustang/mustang_info.htm

August 21st, 2007, 08:34 PM	#8
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	swaybars will eliminate alot of the over/understeer and make the car more balanced. __________________ ΜΟΛΩΝ ΛΑΒΕ

August 21st, 2007, 10:52 PM	#10
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	I don't think so. __________________ ΜΟΛΩΝ ΛΑΒΕ

August 22nd, 2007, 05:10 AM	#11
TheDuke Regular 2006 Mustang GT Join Date: Dec 2006 Location: Middle of Nowhere Wyo Posts: 114 iTrader: 0 reviews	Here is a site I came across that looks like it might help... http://www.rallylights.com/other/stuning.htm __________________

August 22nd, 2007, 11:00 PM	#13
RyanHNT Regular 2007 Mustang GT Join Date: May 2007 Location: Kansas Posts: 153 iTrader: 0 reviews	Have you put on strut tower braces, when I put mine on it made a world of difference in control, the car remains level in tight turns at speed or excellaration, the way it feels to me is that instead of diving or lunging as it did before; it feels like the car is pulling itself through the turn. I'm no expert but thats the way it worked for me, simple cheep mod. too. __________________ 2007 Mustang GT , mod. #1. Airaid CAI. #2, Strange Deveopment, Ext. clearence strut tower brace,#3 Diablo Sport Predator, NITTO 555 extreme ZR 255/50 R17's

August 23rd, 2007, 12:42 AM	#14
06RedfireGT One Man Wolf Pack 2006 Mustang GT 13ish....maybe Join Date: Aug 2006 Location: Regulatin On Some OGs Posts: 22,483 iTrader: 2 reviews	You should be able to get rid of alot of the understeer by tuning your shocks and struts. __________________ ΜΟΛΩΝ ΛΑΒΕ

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