Steering wheel shakes 65+mph (Page 1/1)
pontiacfierokid1985 JUL 20, 11:11 AM
I’m getting terrible vibration at highway speeds I already went and got the tires balanced do you all think it could be the wheel bearings. New inner and outer tie rods have been installed as well and had a alignment done
edfiero JUL 20, 11:19 AM
Can you tell where the vibration is coming from? Front / Back, Left/Right? If you can tell where its coming from, you can move the tires around and see if the vibration follows the tires.

Is this a new problem,did it happen after the wheels were balanced? Its not unheard of to throw a weight off the wheel. Rotating the tires should tell you if the problem is tires or something else.
Spoon JUL 24, 10:38 PM
Maybe a belt shifted in one or more of your tires. Some tire people can tell just by looking at the tire.

https://www.youtube.com/watch?v=O0I8UqHXHFM

Spoon


------------------
"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut

theogre JUL 25, 04:56 AM
Yes, there are signs for a "broken tire" w/ wreck belts. Likely not your problem but easy to look...
look at both sides for indented areas, like little ditches often goes from bead to tread.
look at Tread all the way around.
Jack a wheel and watch tread as they rotate helps too.
Tires maybe ok but have "bent" rim(s). Watch the bead areas when tire rotates.

Don't think S-wheel shacking = front axle problems.
Just 1 iffy BJ or Bushing Anywhere can make big headaches and still pass alignment at a shop.

Wheel bearings likely not you problem either but See my Cave, Front Bearings
Rear hub bearing is same but you can't adjust them if has too much play etc.
Bad bearing you often feel w/ wheel even rotated by hand w/o any load.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

sourmash JUL 25, 05:42 PM

quote
Originally posted by pontiacfierokid1985:

I’m getting terrible vibration at highway speeds I already went and got the tires balanced do you all think it could be the wheel bearings. New inner and outer tie rods have been installed as well and had a alignment done



That will be something in the rotating assemblies causing that and tires/wheels will be the culprit. Tires stores are notorious for poor service. You can always follow your car in another car and watch the tires/wheels at that speed. If it's bad shaking it'll show in wheel hop. Then you can have that wheel put on the balancing machine and watch it spin to see if it's a bent wheel or bad tire. When I messed with tires Dunlop and Bridgestone were freqeuntly out of round requiring giant weights to at least one tire.

On balancing, there is STATIC balancing and DYNAMIC balancing. Dynamic balancing is more precise where weights will be called out on each side of the wheel where needed. Static is for placing them on one side only where someone doesn't want weights to be seen on the outer lip, or they're the sticky tape type placed on the inner center line of the wheel.

However, there are other rotating things that can SOMETIMES do it, Not often. I had a new halfshaft that would back out of the trans a bit and shake. Spreading the retaining clip a little fixed it.
Dennis LaGrua JUL 26, 10:21 PM
Do you have aftermarket wheels?. If so did you use centering rings to center them on the hubs? It doesn't take much misalignment to create wheel shake. To check for out of round, mount a 10" piece of 2 x 4 on a small piece of plywood as a platform. Drive a nail toward the end and let it stick out an inch or two. Jack car up, place 2 x 4 w nail about 1/8" away from the tire circumference. Now rotate the tire by hand and watch the gap between the tire and the nail head. When it is being rotated, the gap should be exactly the same at all points on the tire.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

theogre JUL 27, 12:06 AM

quote
Originally posted by Dennis LaGrua:
Do you have aftermarket wheels?. If so did you use centering rings to center them on the hubs? It doesn't take much misalignment to create wheel shake. To check for out of round, mount a 10" piece of 2 x 4 on a small piece of plywood as a platform. Drive a nail toward the end and let it stick out an inch or two. Jack car up, place 2 x 4 w nail about 1/8" away from the tire circumference. Now rotate the tire by hand and watch the gap between the tire and the nail head. When it is being rotated, the gap should be exactly the same at all points on the tire.

Along same lines... Fiero Brake "Upgrades" often have same problem for same reason. GA and other Rotors can move off centered when tire are installed.

As to aftermarket rims w/o centering rings...
Lug Centric mounting only work when:
Must Not load the tires when tightening lugs.
Lugs aren't damaged to start with. One slightly bent lug can cause problems.
Lug Nuts and Holes are Cone Type is best or Very Good fitting otherwise... Slotted "Universal" rims often won't work.

Even then, Hitting a pothole can move a tire off center until you "Reset" them by loosening and re-torque.
Easier if lube brake and rim faces where they meet.
andreww JUL 27, 11:02 AM
I would be rotating my wheels front to back to see if there is any change. If there is no difference, you can pretty much eliminate the tires from the equation. In my experience, a from tire balance issue will cause the steering wheel to shake. Rear tire issues will be felt in your butt. I do suspect that your tire may be out of round due to slipped belts. No matter how you balance a tire with bad belts, its gonna shake.