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BN6 Front end shake at high speeds

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chuck1006

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I have a rebuilt BN6 done by me with new front bearings etc. It has run straight and true at low speeds up to 45+ MPH but today I went on a 50 mile cruise and took it on the freeway. I would guess I was up to 60+ MPH and the front end started to shutter to the point where I had to slow down. I rebuilt the rest of the front end with new grommets, etc. Tires are new and inflated properly. Any ideas as to what to check? Maybe retighten the bearing nuts after the 50+ miles driven?
Thanks
 
Chuck--

At the risk of asking the obvious, are the new tires balanced?
 
I had the same and it only went away with new rims. So true and balanced are required to avoid scuttle shake.
 
Hi Chuck-6, After a complete front end rebuild it is also important to set the front end TOE to the specifications.-FWIW---Keoke
 
Most likely the wheels are out-of-round. Either replace them or have them trued. Usually the cost of truing is as much or greater, than the cost of new wheels. Unless there chrome wheels. Also check the wheel hubs. This is a serious problem and should be fixed right away. /ubbthreads/images/graemlins/ooo.gif
 
Thanks for the replies. Yes, wheels are balanced. Mine are disc wheels so truing is not an issue. I will check the toe in.
Thanks again,
Chuck
 
Chuck,
I would get the car up on stands and do a close inspection of the steering, suspension (put a 2" wood block between the shock arm and body when lifting to set the suspension at a neutral positon). Try rocking the wheels to see if there is any play (left/right, top/bottom, up/down, in/out). Have someone move the steering wheel as you hold one of the front wheels to see if you have slop anywhere in the steering. Spin the wheels with a pointer fixed at the bead to see if they are running true. How are your shocks?

Cheers,
John
 
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