I'd check for tire problems first, as that is certainly the easiest fix. As with Tberg, my left rear hub was shot. The bearing could just move around in there, and the amount of movement (checked with the wheel off the ground) was quite eyebrow raising.

What I was finally able to diagnose was that the car wiggled between on-throttle and off-throttle conditions. Do this check: First drive around going on-throttle to off-throttle several times without touching the brakes. If you have a hub problem, this will open up your caliper pads a bit. Don't touch the brakes. Then, with the car going straight at a steady speed, take your foot off the gas. Did you need to make a steering correction? Add throttle again (just a little is all that's necessary for the test). Did you have to correct your steering back again? If yes - then it's most likely a rear hub.

Then to confirm that it is a hub: Jack one (or both) rear wheel off the ground; make sure you release the parking brake. Even with the parking brake released your brake calipers will still impede the wheel from moving left and right (in the horizontal), so tug & push on the top and bottom of the tire. If that hub is your culprit, the top/bottom movement (in the vertical) will be obvious.


If it is a hub, I'm sure Tberg and I can help you from there.


But I do hope it's just a tire gone bad.

 

It could be an "out of alignment" situation. That would cause the shake and vibration.

 

I'm pretty sure it's not an alignment problem or bent wheel because it only does it at very low speeds and then clears up

 

Indeed they are.
All good, valid advice from the other members, and those tyres are past their usable lifespan.

I found this on t'interweb:

"
If your vehicle wobbles at 15 to 20, go directly to a tire shop, do not pass go, do not collect $200.00, definitely do not hit the freeway with your family in the car, go directly to a tire shop. Though this can be caused by a severely bent wheel, or severe cupping, the most likely cause is a separated tire. Separated tires are a very serious safety issue, and must be dealt with immediately, since it's just a matter of time before the tire blows. A tire failure of this type almost always causes damage to the vehicle, but that's nothing compared to the many fatalities that are cause by this. Do not put this off!
"

There might be a bit of hyperbole as it was from a tyre supplier, but...

Mike

 

I got online today and think I've found a pretty good set of tires for a fair price. Will order tomorrow. Meanwhile, now if I open top display tells me hood is unlatched. Put top up and error goes away

 

Good luck with the new 'boots'. Do let us know how it works out.

Best to start a new thread on the hood issue. Lots of knowledge on the forum & Gus is the go-to man here.

Days like today I envy you; it's been a glorious 32 degrees. We'll pay for it, mind...

Best wishes,
Mike

 

Got new tires ordered today. Hopefully will be in tomorrow. Will see if that fixes problem and will update from there

 

Happy, Happy. Quite a bit lighter in the pocket but new tires fixed my problem

 

Glad you're sorted Dale.

 

Glad to hear that Dale!

Gotta add on to what Mike said too: I had a '85 BMW 635 that developed a pronounced wobble driving home after being parked at the airport for a few weeks. At first I wrote it off to flat-spotting, but by the time I got home (30 minutes later) it was so much worse, that I set the alarm to be the first person at the tire shop the next morning. That drive, just to the tire shop, at slow speeds, almost shook the car to pieces. I'd had tires go out of round before, but I'd never experienced anything like that. It can be VERY serious.