Hi, since clouting a rear wheel against a kerb I had to replace the lower wishbone and a HICAS arm. The car seems pretty straight again now but I get an unpleasant vibration at 80+ mph (ahem!)it runs in a cycle, vibrate for 2 seconds (BBBbbbbbrrrrrr....) and then smooth for two seconds and then vibrate again....most noticeable when coasting/deccelerating/no throttle

 

Wheels aren't out of balance I don't think, this should clear up at 80mph. I did have the rears swapped for the fronts to even out the tyre wear a bit....

 

Any ideas anyone??

 

Cheers!

 

RobH

You certain you haven't any dents or dinks in the wheels? My OZ's Racing split rims have a couple of dents in them and the opinion is that this causes a lot of vibration..even with them balanced out which I get. Even with the laser alignment guys, they said the same. Weights do knock off easily. Why we pay our road taxes to drive nice cars on shit roads is beyond me...maybe we should start a petition to sort the government out. Conspiracy meesa thinks. Just my two pennies worth...

 

Stu

Leicester

 

Hmm...my wheels ain't perfect but I was under the impression that balancing problems tend to show themselves between 60 - 80 mph and then they clear up...also got a ticking noise (quite loud) from the front drivers side disc, something catching on each rotation...?

 

Cheers,

 

RobH

IVE GOT THE SAME PROBS!!

(TICKING /CLUNKY NOISE)

after talking to macca he recons its my upper links,bushes need replacing.gonna get mine sorted soon so i'll let ya no if it sorts it.

CAN YOU FEEL/HEAR any play when ya move the wheel up/down or side to side?

(FOR THE VIBRATION)

ive already balanced 1 front wheel which made my vibration a bit better,im gonna get the rest done ,so ill let ya no if this sorts the vibration on mine

Hi,

It could also be the centre prop bearing(and/or rear gearbox mount if manual) at fault.This tends to manifest itself at higher speeds.

JEZ

RobH,If rear wheels are out of balance you can get a bad vibration/whineing noise ,had a rs turbo,did same could not figure it,took it in to have wheels balanced while still fitted to car and they were found to be way out,yet off the car they were ok,forget the tech reason but after they did it, took it for a blow out run and it was perfect,strange but true.

Did you replace the drive shaft or half shaft, whatever they call em! Cos my old Zed had the exact same vibration by the sound of it it was road speed related and when i took the whhels off and ran it on axle stands the off side drive shaft was spinning in an elipse, so i put it down to a bent driveshaft, if youve clonked the rear wheel on a kerb you could have bent or mis-alligned the drveshaft or its mountings, might be worth a look with the wheels off.

 

Good luck with it.

 

B19RKS

Have you checked the rear shocks??? Sounds like a distinct possibility to me

 

CheerZ,

 

Andy

Put the wheels back to where they were(back to front again). I tried to do swop mine around when I first got my car and got a serious vibration at any speed. Soon as I put them back it went.

 

Rob.

I hadn't spotted the tyre swapping bit This generally isn't recommended anymore. In fact I don't think it was ever recommended for rear wheel drive cars, only FWD... As rob says, swap them back and try that If not, rear shox is a possibility....

 

CheerZ,

 

Andy

 

'K - thanks guys.

 

I'll try swapping the wheels back. I'd swapped them 'cos the rears were gooduns and passenger side was wearing horrendously quickly on the outside shoulder due to the bent wishbone. The fronts were crappy Nationals and actually 55s instead of 50s so I didn't care if they got wrecked.

 

I did get one of the gooduns flipped (not rotational) so that the wear was out of sight, s'pose that could be a problem...

 

Cheers!

 

RobH