Bumpy ride on final editions with 15 mm spacers

[RanjS8]

I put final editions on to my a8 with 15 mm spacers....and for some reason I would get vibration through the steering wheel at about 80 to 90 mph usually when cruising...but not when accelerating.

Further when I slowed down...for some reason I would feel significant brake judder at about the 40mph mark...but I wouldnt feel the judder in the brake pedal...but it would feel like the transmission was moving side to side....

Anyhow I figured I would switch back to the a8 sports to see if the symptoms would persist or cease. I was getting the similar symptoms but to far lesser extent.

At present with a8 sports...I am feeling all the bumps through the steering wheel....the steering wheel has slight vibration at speeds...80- to 90,,,and there is some slight judder when slowing down....

Could anyone advise why I would be experiencing these symptoms....especially so on bigger wheels with spacers....


thanks