4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

IRS? bad or good?

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Old May 22, 2006 | 06:13 PM
  #1  
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straitwangin
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Default IRS? bad or good?

i was looking at trading my 02 Gt in for a 99 cobra, with about the same amount of miles. what is all this i keep hearing about the independ rear suspension and how they cant run hard from a dig. someone explain.
Old May 22, 2006 | 06:16 PM
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Default RE: IRS? bad or good?

IRS is mainly made for driving that involves twisting and turning. A solid axle is great for straight line speed with the correct overall suspension setup.
Old May 22, 2006 | 06:18 PM
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Default RE: IRS? bad or good?

first off the irs is heavier. Second they are made for a road coarse and for comfort more than anything.


The reason they cant take the hard launches are the half shafts just weak. To make an IRS system strong you would need to replace the half shafts. and then they make a irs brace to help beef up the rear.


More than that I dont know. but should give some info to start with
Old May 22, 2006 | 06:19 PM
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Default RE: IRS? bad or good?

yeah i do a lot of just drving around naperville and very little highway driving so this would be bad for just all out acceleations all the time?
Old May 22, 2006 | 06:23 PM
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Default RE: IRS? bad or good?

depends on if you are going to stick with the stock tires or going with a stickier/wider tire. If not you wouldnt have to beef anything up, i dont think
Old May 22, 2006 | 06:38 PM
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Default RE: IRS? bad or good?

wanted to run 3:73's and 17x10.5 in the back.
Old May 22, 2006 | 07:10 PM
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Default RE: IRS? bad or good?

after you get the half shafts will it be a lot stronger? i have a 01 cobra and i want a stornger rear end lol....
Old May 22, 2006 | 07:15 PM
  #8  
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Default RE: IRS? bad or good?

well i dont know if im gonna buy the car its a beutiful Black Cobra with 40k on it, any problmes with this motor, leaking oil or other head problmes like the ones that plagued the 03/04 cobras?
Old May 22, 2006 | 07:24 PM
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Default RE: IRS? bad or good?

with wide rims sometimes you will hit the suspension if you have irs.
Old May 22, 2006 | 07:26 PM
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Default RE: IRS? bad or good?

The irs is a waste of extra money imo, I wish the cobra's didn't even have them. Although the exhaust does look really nice. Why else do you think cobra owners with big power want to swap out the irs for a gt solid axle??



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