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Old 02-06-2006, 01:14 AM   #1
2rexy
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Unhappy HELP UNSTABLE WRX at high speeds

i have an 04 wrx with tein s. tech springs on stock shocks for about 1 year and a half. I also have 18x8.5 wheels with nexen n3000 tires which are not so great. The side wall on the tires is very squishy or spongy. If i go about 70mph or above, the car sways a little and if i want to turn, it feel as if im going to lose control. The car still drives straight and i just got an alignment, but it still feels very easy to lose control. And worst of all is the steering response, there is so much excess play in the steering and its very sluggish and unresponsive. My brother has a 350z and his steering is so responsive and tight i feel very safe in his car at high speeds. Can someone PLEASE help me on whatever i need to do to fix all these problems or should i just sell the car. DO STis handle like this too!
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Old 02-06-2006, 01:20 AM   #2
Scott Farmer
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Well, first of all, with 18x8.5 wheels, I'm assuming that you've got some wide, low-profile tires. That's going contribute to the "sway" you have. It's called tramlining, by the ways. You should post up your alignment sheets so we can see the details.

For reference, my STi's steering isn't sluggish or unresponsive, by any means. However, my car tramlines a lot. That's because of my wide, high-grip tires and the 3+ degrees of negative camber I run, though.
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Old 02-06-2006, 01:39 AM   #3
thesmokingman
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Quote:
Originally Posted by 2rexy
DO STis handle like this too!
So you messed up your car huh? And your blaming who for this?
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Old 02-06-2006, 01:48 AM   #4
flyboymike
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How many miles have you put on since you got the S-Tech's? Do you think your shocks are intact? 8.5 inch wide wheel will definitely tramline, but you could have more going on there.
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Old 02-06-2006, 05:35 AM   #5
garie
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get better springs some new struts, some better tires, maybe an alk.
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Old 02-06-2006, 07:24 AM   #6
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Sounds like the stock struts are blown to me.

I would say go with a better performing strut first and get some h-techs if you want to stick with Tein and see what that does for ya. Have someone you trust drive your car and see what they think about how it handles.

I have a set of nexens 225/45/17 on my STi and have had no problems with them. I have em mounted on a set of 17x8 Volks. I got the nexens for like 55 bucks a piece brand new and figured they would be better for my commute everyday.

I haven't had any problems with them, they are no where near as sticky as the stock bridgestones that came on the car, but they will last a lot longer in terms of milage. They don't tramline near as bad as the stock tires either, and if I ever want to have fun then I'll just change back to my stock wheels.
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Old 02-06-2006, 07:59 AM   #7
Impreza01
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Um, I think it's kind of your fault the car is handling that way. The S. tech springs probably blew your struts.

Last edited by Impreza01; 02-06-2006 at 10:57 AM.
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Old 02-06-2006, 08:46 AM   #8
Patrick Olsen
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How is it his fault if it's the struts?

What kind of tire pressures are you running, 2rexy? If your tires have a really soft sidewall then you might need to jack up the tire pressure to compensate. It'll ride a bit more firm, but will also take some of the slop out of the handling.

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Old 02-06-2006, 10:38 AM   #9
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Definitely agree on the psi in the tires...I went from 34 psi to 38 psi and it made the car much more stable.

Also more dampening can do wonders in stability so definitely look into struts. S techs are rough on struts cause of the drop, my friend did eibachs and one of his struts started leaking after a month of driving.
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Old 02-06-2006, 11:00 AM   #10
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Changing wheel offset will change steering feel. What offset are those 18 x 8.5's? And what size are those tires?
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Old 02-22-2006, 04:26 PM   #11
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thanks for the info guys. And the offset is 48.
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Old 02-22-2006, 04:33 PM   #12
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ditch those crappy tires before they blow and you die.
followed by ditching the S.Techs.... Their not firm enough and drop the car too far.
Odds are you've blown your stock struts. they weren't ment to run that low. replace them too..
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Old 02-22-2006, 04:38 PM   #13
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Another vote for blown struts. Also inspect all your sway bar end links and mounts to make sure everything is intact.
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Old 02-22-2006, 04:48 PM   #14
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When checking your tire pressure, be sure you're not running too high a pressure either. I once went from 35 to 40 psi and lost much directional stability at freeway speeds. (That was on Dunlop M3s on a 16x6.5 rim, so your optimal tire pressure will probably be different.)

If your struts are blown, at least you should be able to find a good deal on some take-offs in the classifieds section.
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Old 02-22-2006, 04:56 PM   #15
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i have s-techs and 18x7.5 wheels, 225/40 falken ziex 512 all seasons, +45 offset, stock shocks (25kmi on s.techs, 28kmi total). high speed stability is great. the ride is a bit bouncy (not much worse than when the shocks were new). a set of konis would definately help in my case.

with 252/219lb/in spring rates, the 04-05 s.techs are just as stiff as prodrives and drop an extra .5" drop all around... i like 'em plenty. I can't see why people bad-mouth them soooo much, aside from the lower-than-ideal ride height (for suspension geometry perposes). it handles much better than stock and will never see a track.
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Old 02-22-2006, 07:37 PM   #16
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Check the steering rack bushings. Seriously... sometimes that cheap **** can be the issue..and if you havent done the mod its only 30 bucks. I had this same prob but with stock everything. I changed it, steering it much more brisk. If your shocks are gone, jump on the shock tower, and see how mushy it is for rebound. If it feels fairly solid... remember to try this with the hood up so you dont bend anything... then it may just been the steering bushings. Not much to lose except 30 dollars.. True, I know you should change the struts..but maybe it is not the obvious thing that is wrong, and the small thing could be the issue.
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Old 02-22-2006, 08:04 PM   #17
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Quote:
Originally Posted by 2rexy
i have an 04 wrx with tein s. tech springs on stock shocks for about 1 year and a half...
this is your main problem right here bud

get a good spring not Tein super low garbage and some KYB GR-2s


and save the wide tires for track days
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Old 02-22-2006, 08:55 PM   #18
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...junk parts....broke parts....bad parts and a bad car is the result.
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Old 02-23-2006, 04:26 AM   #19
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TIRE PRESSURE

Try different pressures, and make sure you dont have a leak.

Ive had a bad tire leak the last couple of weeks, which caused the car to be rather dangerous in terms of controlability at high speeds on the freeway, and even under lower speeds when the pavement wasnt even. I got it fixed, and got my tire pressures set back to what makes the car comfortable to drive (with Khumo 712's, i've found they need a higher pressure than other tires to prevent odd steering behavior)
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Old 02-23-2006, 02:12 PM   #20
gc822
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Quote:
Originally Posted by Kostamojen
TIRE PRESSURE

Try different pressures, and make sure you dont have a leak.

Ive had a bad tire leak the last couple of weeks, which caused the car to be rather dangerous in terms of controlability at high speeds on the freeway, and even under lower speeds when the pavement wasnt even. I got it fixed, and got my tire pressures set back to what makes the car comfortable to drive (with Khumo 712's, i've found they need a higher pressure than other tires to prevent odd steering behavior)
which reminds me, I have a slow leak in my left front that has been giving me handling woes

thanks for reminding me
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