I have a wheel shake that i can not figure out what it is its not the wheel bearings...cabs...so i'm gonna replace the axles and steering rack..is there any advantage to swaping to the 09 steering rack..i have an 06 ss.sc ....and for fyi i've had wheels balanced a **** ton of times...alignments...and still nothing...its only between 39-45 mph right in there

 

what wheels? If aftermarket wheels, tighten the lugs in a star pattern and torque to 100 ft lbs, car OFF the ground so the wheel centers on the wheel lug flange. Otherwise the wheel will not be centered on the hub.

 

bent rim possibly? Bad tire, try getting them road forced to check the tires themselves.. isnt steering rack and axles a bit to pricey just to guess at? not saying your wrong or anything.. .. just a thought.

 

sounds like a bent rim...had this happen to a customers cts-v put the car in the air and move them manually and see if one looks like its warped and boom thats your problem, hope that helps....

 

or you can take it to a local shop, and they will road force it for you. I used to do it, it will tell you if your rim is "out of round". Thats if you want to spend the money for it. or you can do what rocketrex said, works too..

 

^x2 oh and forgot to mention wheels america can fix them for you...check them out

 

thats just what i was thinking if you get them road forced they can tell you if you have a shifted belt in the tire or if your rim is bent a reg. blance wont pick that up

 

yep, yep, exactly.

 

deff not a rim..i've tryed 3 different sets...with 3 different sets of tires....

 

well that rules that out.. sounds to me you have a bigger problem then expected, how bad is the shake/shimmy exactly?

 

durning that mph feels like out of balanced rims...but not....i'm thinking axle hubs ive been lowered pretty low for botu 25k

 

quite possibly, have you gotten into any accedents? bumps? or anything related to that, that would cause unknown damage?


Before you lowered your car did you have problems? *Nice rims btw, i almost went with those, kyowas. sweet, but wouldnt look good w/rear drums *

 

curbed the driver side rims awhile back with a different set of rims

 

that deffinately could be the problem, does it pull at all as it shakes? I had a guy curb a side walk and bent his rim, he got new rims/tires and alighnment, and he came back because a broken steering leakage. Check your hub bearings, or loose broken/bent suspension parts.

when you get an alighnment, ask for the print outs to see if you are dead on or one side is required more than the other, that may help..

I also hit a curb awhile back and slightly bent my control arm, and now my caster is off ever so slightly, but doesnt affect normal driving or wear.

If its not any of the above then, quite possible its something bigger.. hope this helps.

 

also is the problem any worse if you hit the brakes could be worped rotors also rare but have seen it b4 different app. but none the less your stablizer link's check those they shouldn't have ANY play.

 

Check your CV boots to see if they are torn. Then check your axles, just grab a hold of the shaft and tug it one way then the other way there should'nt be any movement if there is then you need axles.

 

What's tire wear look like?

Have the alignment checked.

If all of the aove is okay, check tierod ends and various bushings.

If it was a bad hu, you'd probably hear it"whining" when in motion, louder with speed.

Also - were all 3 sets of wheels aftermarket? Are you COMPLETELY sure that the hub bores are same as stock? If not, do you have/did you use centering rings? If not - well, been there, done that - replaced a bunch of **** because the douchebag at the shop that sold me the rims said they were stock bore and I believed him. They weren't, and I went through 3 axles and some other bits before Saturn of St George figure out that the wheels were a tiny bit off center every time they were remounted becuase the wheel centerbore was too big. Hub centering rings, problem gone.

 

knuckles???

 

I thought our rims were lugcentric not hubcentric? I dont remember where I heard that from...

 

actually i've tried..a set of g6 gtp rims... a set of stock rims (18's) a set of stock rims (17's) now these

and alignement came out damn near perfect...

 

Lugcentric, hubcentric - whatever - without centering rings and a wheel with a larger than stock bore center, you better be DAMN careful mounting the wheels or you will get shake like an epileptic at a rave.

 

yea i still have no idea