I would suggest having the tires/wheels rebalanced and checked for out of round.

No need to find hubcentric rings, they would not help at all and probably induce even more issues as nothing is machined to be hubcentric, the Zuki's are stud centric.

Also weak, whimpy suspension link bushings can allow an oscillation to develop.

I would suggest having the tires/wheels rebalanced and checked for out of round.

No need to find hubcentric rings, they would not help at all and probably induce even more issues as nothing is machined to be hubcentric, the Zuki's are stud centric.

Good to know about the stud-centric deal.

I'll bring the wheels/tires in and have them looked at.

- Andy

I vote u joints. After you run it for a while, fell them.A bad one will be hot.

I recently replaced my U-joints and forgot to mark the driveshaft.  If the driveshaft isn't mounted correctly, it gets out of balance (you can see the little rectangle weights welded to it) and causes a really odd vibration like someone is pumping bass through a subwoofer.  I just removed the shaft, rotated the mounting point by one each time, and found one that made the vibration go away.

It could be broken cords in your tires.  Tires do not need to be that low on tread.  I had both front tires on my Grand Prix break the cords, and took it to a Garage to find the problem.  Replaced all the tires and problem went away.

I recently replaced my U-joints and forgot to mark the driveshaft.  If the driveshaft isn't mounted correctly, it gets out of balance (you can see the little rectangle weights welded to it) and causes a really odd vibration like someone is pumping bass through a subwoofer.  I just removed the shaft, rotated the mounting point by one each time, and found one that made the vibration go away.

There are phase alignment dots on the driveshafts. Takes the guesswork out of it.

Check the rear shocks. Mine did just that when I had a blown shockabsorber.

Very soft shocks combined with a bad balanced tire can also get the car to shake.

Wish I'd known about those phase alignment dots before   Where are they located?  I wasn't looking for them when the shaft was off, so I didn't notice them.

Is there much slop in your slip yoke/ output shaft fit, output roller bearings shot?

Took the Kick to the dunes this weekend. Drives just fine at 60mph and under, but over that, you get more and more vibration.

I'm going out of town, but hope to bring it in to the tire guy next week and start narrowing this down.

- Andy

Was the drive shaft lengthened after the lift?

Took the Kick to the dunes this weekend. Drives just fine at 60mph and under, but over that, you get more and more vibration.

I'm going out of town, but hope to bring it in to the tire guy next week and start narrowing this down.

- Andy

I keep checking to see what the problem was.

Was the drive shaft lengthened after the lift?

No ... should it be for only a 2" spring lift?

Still haven't had a chance to bring it in for the tires. Hopefully this week.

- Andy

Mine did after a 2" lift.

Brand new tires and u joints before the lift and it made it obvious for me. Just a cheesy spacer and my highway vibrations went away.