Rear wheel alignment ?

[Aussiecsi]

I have had an ongoing issue wirh vibration on what appears to be LHS rear .It seeeeems more pronounced when under load/acceleration.

Recently,after parking the car,i noticed that there was the smell of burning rubber and the tyre was warm to touch ( compared to the RHS ) and the rim is not hot . When tthe car is jacked up,the wheel turns freely and it has been suggested that the

 

[Aussiecsi]

whoops ....it has been suggested the wheel might be out of alignment. If so, how can this be rectified as i understand alignment is "fixed" on the rear wheels ?

Thanks,
Simon

 

[Ian C]

Spring/shock all good? Smell suggests tyre rubbing against something.

 

[Aussiecsi]

yep, newish bilsteins,lowering springs,driveshaft balanced, LSD rebuilt, half shafts checked, new wheel bearings. Running RC090's ( with hub centrics). 225 Michehin Pilots. No clearance issues.

 

[Arde]

..

 

[Ian C]

Exhaust system ? I’m out of ideas now

 

[Aussiecsi]

the wheels were swapped/rotated a while ago with a similar outcome . Attention also given to ensuring the rim fitted snugly and fully tightened. The burning rubber smell seems to come from the tread surface which is consistent with the warm- to -touch feeling on the same surface . All this seems to suggest to me that the wheel is not rolling truly and the resulting road friction is generating both the vibration and burning rubber smell .

I intend to get the rear alignment checked (front is fine) but i guess I'm asking what can be done to rectify the wheel alignment if that is indeed the issue. (or what could be causing it ) ?

 

[Ian C]

The rear end is not adjustable. if the bushes in the trailing arm to subframe were shot or perhaps the subframe to body bushes loose / bad that would allow the geometry to be out. Other than that a distorted tyre but unlikely with michelin

 

[Aussiecsi]

Thanks Ian, yes,trailing arm bushes were on the list too .I know I replaced the two body bushes ( Motorsport type) when restoration commenced in 2013 and others probably done too but maybe the crappy W&N rubber type have failed.

 

[stphers]

a quick check with some string and a tape measure Measure the distance from frt to back on the wheels first and compare side to side see what you come up with Run a string from the frt to the back wheels on each side and see if there is a difference in toe from the side to side Camber you can check with a large square These are some quick although not 100% will be close enough to give you some more clues

Thanks, Rick

 

[Aussiecsi]

Thanks Rick,good ides .
Cheers,
Simon