DYNAMICS AND MICKEY Ts

[jimbob]

Hi All,. I am having a real big problem with a vibration with these new wheels and tyres i have brought. They are 16x8 Dynamic steel rims and 285/75 Mickey Tompson ATZ 4 rib. At about 90ks there is a vibration or more like a wobble, you feel it mainly through the body of the car but also through the steering wheel. So far i have had it to 4 different tyre places one of them was Dynamic wheels them selves and still the problem is not fixed!!!!

As you can all inagine this is getting quite frustrating.

Has any one had any experiencices like this at all?

Any thoughts?

Cheers Jim:mad:

[def-90]

Checked your driveshafts and all steering and suspension lunks are tight?

[MacFamily]

Also would not hurt to check your swivel hub pre-loads...

[LowRanger]

One of the problems with the Dynamic rims is the taper for the wheel nuts not being identical to the Defender wheel nuts.If you don't do the wheel up perfectly concentric then the wheel can be mounted slightly off centre and this can induce the symptoms you mention.Every time I fit mine,I do the nuts up with my fingers,then I stick a bar under the tyre and lift the wheel up,doing the nuts up further as I rotate the wheel,lifting and tightening at 4 or 5 different points.Once I am sure that the nuts are done up concentric as far as I can with my fingers,only then will I do the nuts up tight,before dropping it on to the ground and rechecking the wheel nut tension with the vehicle weight on it.Since I have done this,I have had no problems.Prior to doing this,I had the wheels balanced 3 times,and it felt like I had a bent rim.
It sounds like a lot of work,but after you do it a couple of times,it doesn't take that much longer.And I do it with 35x12.5R16's.

Wayne

[cal415]

I have almost the same combo, no issues at all.... 16x8 -25 with Mickey T MTZ 285-75-16s, i have them on my county it hasnt seen much high speed stuff yet, but cruising up to williamtown and back now several times in the 100k zone the only thing i have noticed its they are noisier then my 37s

[Allan]

My Puma did this with Performance 8x16 rims and Toyo m/t's. I had them balanced 3 times with no improvement. Then we found the centre caps pushed in from the hub side of the rim, this was the only contact point when the wheel was tightened. We removed them and re balanced them but they still wobbled a little. I swopped them over to the TD5 90 and no problems with either vehicle since.

Allan

[jimbob]

Thanks all for the input. I do believe it has some thing to do with the size of the centre hole and the hub size. The only thing centering the rim on the hub it the wheel nuts. One tyre centre said to machine up adapters to go in between to ensure the rim sits perfectly centre on the hub.

Funny thing is i had the very same tyres on the original alloy rims and no problem at all. I believe because of a smaller centre hole that locates the rim on the hub.

[clubagreenie]

I'd get some hub-centric rings made. Sounds like as said it's not being centered right and you're bouncing.

[Tombie]

Defenders only centre using wheel nuts.
They dont use the hub


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I am here: http://maps.google.com/maps'll=-33.040080,137.577056

[boofdtl]

Hi were abouts are you if in melb you can come to my work i run a tyrepower in camberwell and i will do a optie balance on the wheels for you free of course to see if i can help...

[T1ASLAV]

Not sure if it helps but mine did the same thing when I fitted my Bighorns/Dynamic Rims, went to all manner of steering/wheel places and no one could figure it out - all sorts of theroiries including a bent axle tube.

In the end the fix was simply the panhard rod bolt on the chassis was loose and the bush had flogged out.

[LowRanger]

I did post quite a lengthy reply the other day,that is now lost in the ether.But it is a known problem with fitting Dynamic rims to Land Rovers.The other problem that people can have,is the wheel nuts coming loose,refer to my earlier post to alleviate any problems.

Wayne

[jimbob]

Hi were abouts are you if in melb you can come to my work i run a tyrepower in camberwell and i will do a optie balance on the wheels for you free of course to see if i can help...

Wow Very generous. I appreciate the offer but i am in Mildura. Just a tad too far.

Not sure what i will do yet. Probably check a few more things and if i cant find any thing then just put the alloys back on and loose some turning circle...

[jimbob]

Not sure if it helps but mine did the same thing when I fitted my Bighorns/Dynamic Rims, went to all manner of steering/wheel places and no one could figure it out - all sorts of theroiries including a bent axle tube.

In the end the fix was simply the panhard rod bolt on the chassis was loose and the bush had flogged out.

Hmmm Will check this as i need to pit a new panhard rod, I seem to have bent the old one. Seperate incident to the wheel wobble though.

Thanks

[jimbob]

I did post quite a lengthy reply the other day,that is now lost in the ether.But it is a known problem with fitting Dynamic rims to Land Rovers.The other problem that people can have,is the wheel nuts coming loose,refer to my earlier post to alleviate any problems.

Wayne

I tried what you had posted previous Wayne, but had no success. I will give it a go again tomorrow maybe i will get better at it with practice.

[jimbob]

Defenders only centre using wheel nuts.
They dont use the hub


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I am here: Google Maps (http://maps.google.com/maps'll=-33.040080,137.577056)

Ah well there goes my theory, maybe my wheels are just ****e then. I will check these other things but i recon the rims can go back..

[jimbob]

Well I just got the old alloy rims put back on and the car has not drivern this good since i took them off. I will just have to adjust the steering bump stops to stop them rubbing. Oh well better than the annoying wobble.

[Allan]

Well I just got the old alloy rims put back on and the car has not drivern this good since i took them off. I will just have to adjust the steering bump stops to stop them rubbing. Oh well better than the annoying wobble.

Same as I did with mine, it just didn't work. I still cant work out how this tyre combo works on the wife's TD5 90 but not the Puma110. It drives like a sports car (almost) same wheels, same tyres, no wobble. Very odd.
Allan

[LowRanger]

Same as I did with mine, it just didn't work. I still cant work out how this tyre combo works on the wife's TD5 90 but not the Puma110. It drives like a sports car (almost) same wheels, same tyres, no wobble. Very odd.
Allan

Obviously if the same wheels and tyres are OK on another vehicle,that tells you that the problem is not with the wheels and tyres as such,but in the fitting.A rotational mass problem.
Whenever I take my Dynamic rims off the vehicle now,I always make sure that I put the rims on exactly the same way they came off,by marking the tops of the studs that correspond to the valve.And then I use the method I described earlier.That is also why,when I had the problem with my wheels,when I took them off after having the problem,I marked where they came off and rotated the wheels when I refitted them.This was all part of a large post I made that was swallowed up by the ether:mad:

Wayne