Outer Limits 4x4 Board

as above i have the shakes around 60 to 80 area

i have

6inch lift
adj panhard rods with gen nissan bushes
drop boxes
radius arm bushes pretty much new gen nissan
tough dot rtc
cheezy drag link and tie rod both with new tie rod ends
braced diff with new bearings etc
35 simex just put in 2 bags of auto balance today

all this has been done over the last year

i have read countless posts

the reason i put in the auto balance i borrowed a mates 36 simex ext beadlocks that had auto balance installed there was no shakes at all

bolted my wheels back on to drive home shakes still there

put auto balance in today and
i have took it for a drive and the shaking is no different

any thoughts / ideas would be great

Bent or buckled rims?
And have you checked the pre load on the swivel hub bearings?

Cheers Damo

not sure how to check pre load the swivel bearings were replaced about 6 months ago



im leaning to wheel / tyres

as there was no shakes when i borrowed a set 3 days ago

As I have said on patrol forum your answer is clearly rims/tyres if problem was not there when using other rims and tyres in very similar size

clearly ur wheel combo, get them spun up at a tyre shop and theyll tell ya. I have the same prob with my 35s cos they are buckled.

tyres.....has to be

Probably would have worse shaking but have you checked for chassie cracks around panard mount?

I would say wheels and tyres without a doubt. I have been told those simex's are hard to balance well at the best of times and if your playing with tyre pressures and bashing it stuffs up balance anyway. I would suggest to put up with it or get a set of road tyres orietated tyres. (at's) Even my 33" muddies do it after a few offroad trips.

Simex's typically shake until the flatspot is gone after you have been parked for a while, but usually sorts itself out in 5 to 10k's
I would say your rims have more offset than your mates, adding extra leverage on the steering components thus starting the shake and it gets worse at around the speed you are talking....

I recon 99% of shaking on moded trucks is due to moving the rim further away from the centre line of the swivel box axis....
If the rim sat directly over the swivel axis....you would rarely see shudder, but the further the rim is moved away from that point, the more likely shudder becomes.....
Solution......not much other than fitting a steering dampener, or rims with less offset

thanks harb, that didnt even cross my mind .... good point

rim offset would not change a thing i ha the same problem so i used my mates tyres and rims and it fixed it we both have exact same rims and exact same tyres we even put my tyres on his car and it made his car shit house put his own back on his car problem fixed so i went down and did a wheel balance put them back on still had a problem took the whole car down and did an oncar balance so far so good and that was 1 month and 3 4be trips ago