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Old 11-13-2008, 10:33 PM   #1
theguy
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Default need stiffer rear suspension- help, need suggestions please!

i have an 02 wrx w/stock suspension. i recently put some 18x8 rims on and the outside of the rear tires rub against the fender on either side when i go over a good size bump, have people sitting in the back, or take a corner too fast. what is a good solution for this problem? i am trying to get some 06 sti rear struts, springs, and tophats to swap out and hopefully stiffen up the rear enough so that this problem goes away. suggestions would be very appreciated. I'm also willing to buy an aftermarket suspension for all four corners, what's my best bet, and can i get away with the 06 sti rears if that opportunity is presented to me? thanks in advance.
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Old 11-13-2008, 11:05 PM   #2
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adjust your camber.. get better suspension
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Old 11-13-2008, 11:24 PM   #3
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the stock suspension is garbage

all of it

dont try to buy just part of a suspension
that is just ridiculous


pure ridiculous
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Old 11-13-2008, 11:30 PM   #4
theguy
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Quote:
Originally Posted by Uncle Scotty View Post
dont try to buy just part of a suspension
that is just ridiculous


pure ridiculous
thank you, i realize i am an idiot... that is why i ask these dumb questions. i thought i had a solution to the problem, but turns out i don't, who knew. you did, apparently.

On to the other post, if i adjust camber do i want to add negative camber, or reduce negative camber? probably another STUPID question but i don't know the answer

Hence, my request for input and possibly some parts that can fix my problem. Thanks again.
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Old 11-13-2008, 11:58 PM   #5
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You can try rolling the fenders a bit to see if that help. If not, you can see if you can add just a small bit of negative camber in the back.

These two things should be able to help you.
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Old 11-14-2008, 12:30 AM   #6
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Quote:
Originally Posted by theguy View Post
thank you, i realize i am an idiot... that is why i ask these dumb questions. i thought i had a solution to the problem, but turns out i don't, who knew. you did, apparently.

On to the other post, if i adjust camber do i want to add negative camber, or reduce negative camber? probably another STUPID question but i don't know the answer

Hence, my request for input and possibly some parts that can fix my problem. Thanks again.
d00000000000d


an 02 suspension is likely pretty well done.....the struts are likely done....the stock springs are garbage.....the stock strut tops are garbage and on and on and on

dspec struts
sti take off springs
group n tops
used swaybars f/r and some endlinks

that would be a great start

ya cant just do one end and ya gonna have to replace worn out/junk parts
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Old 11-14-2008, 12:30 AM   #7
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Quote:
Originally Posted by theguy View Post
what is a good solution for this problem?
Well, the best easy solution is to roll the fenders. The next best solution is to find some wheels with the correct offset. If you're rubbing bad at an 8" rim, I'm willing to bet the offset is too low.

You can sometimes stop rubbing the fender by adding negative camber. However, this also can cause the tire to rub the strut. Additionally, extra negative camber in the rear will cause more understeer.
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Old 11-14-2008, 01:03 AM   #8
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Quote:
Originally Posted by theguy View Post

On to the other post, if i adjust camber do i want to add negative camber, or reduce negative camber? probably another STUPID question but i don't know the answer

Hence, my request for input and possibly some parts that can fix my problem. Thanks again.
it really does depend on how your wheels are.. what is the offset?? if it's too much one way or the other, you may rub either on the fender lip or on the strut

when i said adjust camber, it was to increase negative.. such as from -1.0 to -1.5.. also, what is your current camber??
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Old 11-14-2008, 01:14 AM   #9
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What tires, what offset, what alignment...
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Old 11-14-2008, 09:23 AM   #10
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wheels are 18x8 +35offset, here is the thread i purchased from.
http://forums.nasioc.com/forums/show....php?t=1425084

i am pretty sure the tires are BFG g-force sport 235's as i am out of town right now and cannot go look at them to make sure...

i have tried rolling the fender and that did help a little but it wasn't enough. the tire rubs right on the very outside of the wheel, almost on the side. increasing negative camber sounds like it may work with just a very slight adjustment.

and pertaining to me being a noob with the suspension, i am not sure what you are looking for Buttdyno when you ask for the alignment.

thanks for the suggestions and comments.
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Old 11-14-2008, 01:59 PM   #11
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Quote:
Originally Posted by theguy View Post
wheels are 18x8 +35offset
There's your problem.

Quote:
and pertaining to me being a noob with the suspension, i am not sure what you are looking for Buttdyno when you ask for the alignment.
He wants to know what camber you're running now.
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Old 11-14-2008, 10:41 PM   #12
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Quote:
Originally Posted by williaty View Post
There's your problem.


He wants to know what camber you're running now.
what offset do i need?

how do i find out what the camber is?
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Old 11-14-2008, 11:14 PM   #13
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if you have ever taken your car for an alignment, they should have given you a printout of the numbers: camber, toe, and cross crosscamber etc.. since you should probably already get an alignment anyway, i guess that's the only way to find out what it is
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Old 11-14-2008, 11:33 PM   #14
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Quote:
Originally Posted by theguy View Post
what offset do i need?
For an 8" wheel, +43 to +47. So at +38, you're 10mm (about 1/2 inch) farther out than you should be. That means your wheel is 10mm more prone to rubbing. If you're barely rubbing now, that means that a correct-offset wheel would keep you from rubbing.
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Old 11-14-2008, 11:42 PM   #15
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Quote:
Originally Posted by williaty View Post
For an 8" wheel, +43 to +47. So at +38, you're 10mm (about 1/2 inch) farther out than you should be. That means your wheel is 10mm more prone to rubbing. If you're barely rubbing now, that means that a correct-offset wheel would keep you from rubbing.
thanks will, that is very helpful. i should probably have done more research before i bought the wheels but oh well, my mistake and i have to live with it. i think i have a good idea of what i need to do.
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Old 11-15-2008, 10:28 AM   #16
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I agree that your suspension is probably on it's way out.

One simple and relatively inexpensive upgrade would be to get rid of the stock bar mounts and bushings and upgrade to the 2004+ set up. The mounts are much thicker and stronger over the 2003 and earlier versions. You can get a kit from Subaru Genuine Parts for around $50, which is both bar mounts, stock rubber bushings, bushing clamps and two bolts. You will have to supply your own nuts and/or washers.
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Old 11-15-2008, 12:01 PM   #17
theguy
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Quote:
Originally Posted by Big-E View Post
I agree that your suspension is probably on it's way out.

One simple and relatively inexpensive upgrade would be to get rid of the stock bar mounts and bushings and upgrade to the 2004+ set up. The mounts are much thicker and stronger over the 2003 and earlier versions. You can get a kit from Subaru Genuine Parts for around $50, which is both bar mounts, stock rubber bushings, bushing clamps and two bolts. You will have to supply your own nuts and/or washers.
noted! thanks...
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Old 11-15-2008, 12:46 PM   #18
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