Cupra r wheel wobble.. :(

wildrides

Active Member
Dec 27, 2013
396
1
This kind of wobble on motorcycles is common when the wheel geometry is out or suspension damaged/worn .

I respectfully suggest checking your 4 wheel alignment ( tracking ) , also look for wear in the steering hub lower joints or steering rack pinion gear , track rod ends , wishbone rubber subframe mountings . The cause will be a gap in a bearing or joint ossilating when you come off the gas . Same as speed wobble on a push bike . Also check dampers for leaks ( assume no buckled wheel rims and wheel bearings are ok )

when the engine is cold you have less engine breaking because the mixture is richer and idle speed is higher ( set by ecu according to temp) This could account for the difference . If you floor the clutch as soon as the shake starts does it get worse or improve or make no difference?

Finally check you have oil in the gear box to the correct level and that the suspension strut top bearings are ok , and steering rack mountings are tight and secure .
 

greck999

SLOW work in progress....
Jul 10, 2009
396
1
Rugeley, Staffs
Thanks for the reply.
Ball joints, track rod ends and bushes appear fine.
Wishbones have powerflex bushes now and appear Ok.
No play in steering rack and wheels aren't buckled or damaged.
The strut bearings has got me thinking. How do I check play in those, please.
And with gearbox oil, if that's low would that cause similar symptoms. Ta.

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wildrides

Active Member
Dec 27, 2013
396
1
does it shake when cornering or in a streight line ? or both at the stated speed of 45/50 mph

strut top bearing ...........remove hub from strut and let strut hang ..........move around and check for play

if indoubt remove strut from car an inspect/ replace bearing
 

greck999

SLOW work in progress....
Jul 10, 2009
396
1
Rugeley, Staffs
Thanks guys. It wobbles on both, tbh.
I'll try and speak with a vw specialist that is near me and see if they have had similar symptoms before.
Thanks again.

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