Side to side vibe

[Cruiserhead05]

For as long as i can remember the cruiser has had a pretty nasty side to side vibration at highway speeds. pretty noticable from 65-80. any ideas? you can see/feel it in the seats and it visible in the dash board, the whole thing moves side to side.

Thanks, B

 

[Safado]

check tires and rims first for balance...do it when they're hot.

 

[Cruiserhead05]

Tires are brand new. got them two weeks ago, it did this before with the original ltx's.

 

[LX_TREME]

check tires and rims first for balance...do it when they're hot.

Also check your tire pressure, spring, shock & bushing & front stabilizer bar.
Could be one of your rims bent.

 

[cruiserdan]

If the new tires did not change things it is likely that something else is either loose or out of balance.

Possible causes:

Drive shaft(s)
Wheel bearings
Transfer case
Wheel(s)
Steering linkage
Engine mounts
Body mounts

 

[Cruiserhead05]

Ok so im getting ready to take the 80 on a short trip next weekend, taking the truck in monday to see if they can find anything. I noticed the shimmy does get worse with time and spend, im guessing that means it gets worse with heat as well.

I was going really slow on a nice smooth surface and i can almost feel it at like 5mph, im think its related with the tires/wheels.
Also, if it helps, the shimmy seems to come in intervals, like every 2 or 3 second for about 2 seconds at a time.
Just wasnt sure if that would help at all. i will tell the shopm to start with wheels, then drive shfts, etc. etc.

Thanks, Brandon