My wheel wobbles at around 70-80 mph. It's not to the extent that it's undrivable, but it sure is annoying.

When I drove my 00 ITR, I always felt confident in it as it plant firmly on the ground with precise steering reponses. Now with this 98, I always have issues with the suspension. Please help me to gain back that joy of driving an ITR!!!!

What's been done:

- The car now went through 3 differnet wheels. 2 15x6, one 15x7. The sympton still persist even though all 3 wheels are probably weighted and balanced and with no signs of bent while on the spinning machine.

- In the past 4 months, the car's been aligned 2 times.

Clues/events:

- The first time I align the car, them bastards broke my axles while on the Dyno for inspection. I have the CV boots replaced by Acura. Car drove ok, but still feel jumpy.

- I switch out the worn shocks and Eibach spring and put in a stock set of ITR shock/spring that has around 8,000 miles. This is when the shaking starts to surface, but the previous owner of the shock guaranteed that the shocks/springs are fine when it's on his car.

- My rotors are currently warped.

- Steering feels like a Lincoln sometimes, as if there is an overboosting of power steering.

My current guesses are wheel bearings and worn suspension bushings. Any other clues? I am going to the shop tomorrrow to try on another set of ITR shocks/springs.

 

Jack the car up.

Shake the wheel holding the 12 and 6 oclock position. If their is play, its your wheel bearings.

Shake the wheel holding the 9 and 3 oclock position. If their is play, its your tie rods.

Going by what you are telling us, its probably your wheel bearings.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Migs &raquo;</TD></TR><TR><TD CLASS="quote">Jack the car up.

Shake the wheel holding the 12 and 6 oclock position. If their is play, its your wheel bearings.

Shake the wheel holding the 9 and 3 oclock position. If their is play, its your tie rods.

Going by what you are telling us, its probably your wheel bearings. </TD></TR></TABLE>

this sounds interesting...what do you mean by shake?? Just shake up and down and side to side??

 

Shake = tug/push

Hold one end and PUSH, and the other end requires you to PULL

 

First part of your problem is "My rotors are currently warped. " Second, if you know your rotors are warped then fix them and then see if the problem is still there. Com'on Ray, you better then that.

 

He did not say the problem occur under braking so I guess the warped rotor don't play a roll here.

Ray....did you do the alignment after you put on the stock sus ??
Give me a call when you get time......I'm having a very possible bearing problem and it may give you some hint.

 

The warped rotor could have an effect on the car even without using the brakes, trust me I have had this problem in the past.

All depends on how severe the warpage is...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bbasso &raquo;</TD></TR><TR><TD CLASS="quote">The warped rotor could have an effect on the car even without using the brakes, trust me I have had this problem in the past.

All depends on how severe the warpage is...</TD></TR></TABLE>

yep...very true.

 

I never experience that.....so I could be wrong

 

this might be stupid, but are you sure those wheels ur runnin are well balanced? Alot of the bigger tire shops have lifetime balancing so you can take ur car in and have them respin balance dat ****... jsut a thought... hope u figure it all out.

 

What about wearing of the tires?

I went on the track quite a few times with the stock tires. All four tires wore out unevently (main the left side of each tire got bladed cause the most of the turns on that particular track is right turns.) and whenever I drove over 120km/h, the steering wheel started to vibrate. This symptom was gone when I switch tires.

good luck.

CS

 

In MOST cases, a warped rotor WOULD NOT cause a vibration without being under braking conditions

But like he said, it could if the rotor was really that bad.

Oh yeah, hahha, this might be a simple fix, balance your wheels!!!!!!

 

How do you know the rotor is warped? Have you measured the runout?

What about warped/unbalanced axles?

 

Next time you take your front wheels off, rotate the rotors. Notice that there is some drag on the brake. Even though the brake is off, it is still dragging slightly. Now, put warped rotors in that situation...you have shaking even if the brakes are on or off.

I am still a noob when it comes to fixing cars, so I could be wrong with this analysis.

 

ok first of all
Ray the shaking isn't that bad
it is there, but your going nutz about it
I need to drive your car again, with the stock ITR wheels to tell you if your really nutz
I think the millenia wheels had a lot to do with the shaking
when you coming over to do your rotors? I already have my new rotors on

 

thanks guys for the input.

The wheels I had on just rebalanced last week. And like all other wheels I have, I am a nut case to achive perfection. So Dan, you know me, I want this thing to feel like my 00 PY...at least being straight, how can I enjoy this car if it has problems and I ignore them?

The reason I bring up the warp rotors is that I also fear the reason of dragging with the pads and grooves on the rotor that might cause the shaking...but why at 70 and above only? The rotors are warped for sure. This brembos only lasted me 1 track day at the expo and it already overheated with that "titanium" look. Not to mention the most obvious violent shake at braking at high speed. It might be a film transfer issue, but to be on the safe side, I'll get some new rotors. I think my CCX pads are badly uneven and may contribute to the ease of warping rotors. I will run some other less agressive pads on street.

I'll have my rotors change and see if the bearings are good or not. I'll let you guys know what my findings are.

Although the tires I have now are a bit chewed up, but even though, my last set of wheels of Millenia with brand new SP5000 also being vibrating the same way. So that may rule out the tire wear...

I am a perfectionist...or simply put, I'm a bitch

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nEoMuGen &raquo;</TD></TR><TR><TD CLASS="quote">When I drove my 00 ITR, I always felt confident in it as it plant firmly on the ground with precise steering reponses. Now with this 98, I always have issues with the suspension. Please help me to gain back that joy of driving an ITR!!!!</TD></TR></TABLE>

you're driving an used car, you can compare everything to your "new" car, btw.....god knows what did the last owner do to the car

 

I never thought about this, but do the Millenia wheels have the same hub diameter as the ITR? 64mm? Would not having an eccentric ring cause a vibration?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WhosITR &raquo;</TD></TR><TR><TD CLASS="quote">
you're driving an used car, you can compare everything to your "new" car, btw.....god knows what did the last owner do to the car </TD></TR></TABLE>

The last owner took care of the car, AFAIK. Even though he had some strange taste on 17" wheels & fog lights.

Ray - try re-torquing the wheels, but this time start from 50lb-ft, then 65lb-ft and finish torquing the wheel to 80lb-ft. Your wheels could be slightly off centered.

Or, check your wheel by switching your rear wheel to the front & see if you still have the same problem.

-Sean

 

Those 17" VX1's were the ****

 

don't get me wrong, I'm not try to blame the last owner for anything but this CW is 2 yrs older than his PY.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Migs &raquo;</TD></TR><TR><TD CLASS="quote">I never thought about this, but do the Millenia wheels have the same hub diameter as the ITR? 64mm? </TD></TR></TABLE>

They do not.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nEoMuGen &raquo;</TD></TR><TR><TD CLASS="quote">
I am a perfectionist...or simply put, I'm a bitch

</TD></TR></TABLE>

hey bitch...wake up and get your *** down to the shop already
lets get working

 

don't take advantage of my words

Anyhow, we did a shotgun approach today by cutting the rotors, sand down the pads and lugs needs to be changed. The wheel bearings and bushings looked good.

It seems like the 21mm (stock are 19mm) lugs I got from Strauss Auto does not seat deep and the threads are so smooth. So it also may be just the lugs...

Anyway, thanks Marc for letting us chiLL in your shop Wish me luck tomorrow