Driving speed "wobble" any ideas

[squamish_chief]

OK, so ... Anyone have any ideas what may cause a serious "wobble" - not just through the steering wheel... through the vehicle so that you feel the shakes.... Highway speeds beetween 80-100km???. There is no noticable wobble below 80, or over 100km??? The tires are fresh, they have just been mounted, balanced, and checked. It is def. not a balance or alignment problem... . There seems to be no noise to possible be bearing related... so.... Any ideas please???
Thanks
Jeff

[thelazybrownfox]

Hey Chief
Wow did you open up a big question.
First questions. How old are the tires? How many miles/ kilometres on the tires? Are they all from one set and type? Were they removed from the rims recently? Are they summer or winter tread tires? What temp are you using them in? Did you rotate the tires when you reinstalled the tires? Did you check the tread for rocks? or a raised patch from delamination? Check the air pressure in all the tires and pressure specs from the delica.

i've had similar problems with numerous sets of tires. Sometimes its the tires (delamination, tread separation ,cord breakage or flat repair damage), road, CV joints, transmission. rock stuck in the tread and sometimes was there before but rotating from the back to the front showed up the problem. If its only apparent after tire reinstallation that eliminates some of the questions.
You could take it back to your tire shop for a recheck. The may check carefully knowing you're going to buy a new set of tires from them.
Wayne

[EricN]

Check your u-joints, both front and rear driveshaft. Also, any chance you have spent any time 4x4ing with it? Look for a bent driveshaft while doing the test below.
Put the rear up on jacks and drive the truck on the jack stands while looking for out of round tires or bent rims, though they usually show up more at lower speeds.

[john clem]

check wheel nut tightness also, however that would show at lower speeds and be suicidal at 100.

[Green1]

I have experienced that issue twice, both times it turned out to be a tire de-laminating (and both times the tires were relatively new) so it's worth checking...
other possibilities include bent rim, or warped brake rotors... or the afforementioned bearings, or even a bent axle...

[ccautos]

Erm - I think its got bent rims .

[squamish_chief]

As ccauto said... Bent rim... problem solved, thanks everyone!! On a side note... Has anyone in Canada started to build a custom lift for the Delica?? So many seen on the auction blocks with big lifts... I am thinking about a smaller one.. 2-3" just to run a slightly larger tire!
Thanks
Jeff

[Green1]

just to run a slightly larger tire!

how "slightly" are you talking? you can get up to 30" with no mods at all, 31" sometimes requires minor modification, but you don't need a lift until above that, considering stock size, that's a couple inches without any lift at all...

if you really do want to lift, Mystery Machine makes 2" blocks for the back, and you can just crank the front torsion bars up a bit to level it out without any new parts in the front.