M5 wheels

[wat_sup2002]

hi guys/girls,
recently bought M5 wheels see pics attached and the car shakes when i get to about 90kmh. i got hubcentric rings, new tyrerod ends, off car wheel balance. i'm thinking caster alignment or on car wheel alignment? any suggestion on what elce it could be for an 89 525i E34? thanks evenyone.
keep upyour tyres
-Richard

[wat_sup2002]

hi guys/girls,
recently bought M5 wheels see pics attached and the car shakes when i get to about 90kmh. i got hubcentric rings, new tyrerod ends, off car wheel balance. i'm thinking caster alignment or on car wheel alignment? any suggestion on what elce it could be for an 89 525i E34? thanks evenyone.
keep upyour tyres
-Richard

Sorry every1, heres a link to the pics

http://www.bimmer.info/forum/attachment.php?attachmentid=1110

http://www.bimmer.info/forum/attachment.php?attachmentid=1111

[Kalevera]

Richard...Find a shop that has a Hunter Roadforce and have them balance the tires out. 90km/h is about the right speed for the infamous bushings problems, anyway -- have you checked them out?

best, whit

[wat_sup2002]

whats a hunter roadforce? no i havent checked the brushings. where are they located and i'll chuck her up on the jack?

[Kalevera]

http://www.gsp9700.com/

On the shimmy...read:

http://www.bmwe34.net/e34main/maintenance/suspension/upper_arm.htm

best, whit

[632 Regal]

do you notice the vibration more when you hit the brakes?

[Guelphguy]

Why would it be the bushings if he only noticed it when he put the new rims on? Would he perhaps just need hubcentric rings as his new rims may have the 74.1mm center bore?

[Guelphguy]

Sorry my bad, just read that he did use hubcentric rings....

[632 Regal]

lol... id guess the tires are either off balance or out of round. maybe both?

[Kalevera]

Well...it was just a thought. Lifting the front of the car to change the wheels might've been the last straw for a worn set of thrust arm bushings.

But yes, I agree with Jeff that it's probably an out of round or misbalanced wheel. Gotta look at the whole picture, though. 55mph is the right speed for the wobbles ;)

best, whit

[GJPinAU]

hi guys/girls,
recently bought M5 wheels see pics attached and the car shakes when i get to about 90kmh. i got hubcentric rings, new tyrerod ends, off car wheel balance. i'm thinking caster alignment or on car wheel alignment? any suggestion on what elce it could be for an 89 525i E34? thanks evenyone.
keep upyour tyres
-Richard

Have you tried putting your old wheels on again to see if the problem is still there?

[pmlmotorsports]

i would dismount the front tires and check the rims by themselves. Afterall,wheels from China can be of good quality or very poor quality. If the rim itself needs more then .25 ounce, ask for a replacement, if not remount the tires and rebalance. If you still have the problem, it very well could be the bushings. As for why the vibration "surfaced" after the tire upgrade, it's because they are wider and of lower profile, and that causes a higher load on an already "sub-par" bushing.

Hope this helps.

[wat_sup2002]

do you notice the vibration more when you hit the brakes?
yes absolultly i do, whats wrong?

[wat_sup2002]

my old whels are gone... sold em on...

[wat_sup2002]

if my car vibrates when i touch the brakes. by that i mean its more notisable, what does that mean?

[Kalevera]

Once again, I have to suggest checking the thrust arm bushings and inspecting the rotors to see if they're warped.

The vibration + getting worse when hitting the brakes = those two components. :)

Best, whit

[wat_sup2002]

ok
so does this mean i may have to replace the brushings only? (costs around $60AUD i think) what do i do about the rotors if there fudged as well? if i have to replace them how much am i looking at?(plz include currency)

[wat_sup2002]

any one?