Wanders at high speeds

Hello i've just started to learn to drive and when the jimny gets to anything about 45mph it unpredictable veers one way slightly and it takes all my concentration to keep it in a straight line.
We've got a 3" lift and Insa Turbo Sahara Mud Tyres. We currently have caster correction bushes but they're only for a 2" lift.
We wanted to know if buying the 3" radius arms would solve this problem at high speeds or would it be easier to get some smaller less agressive tyres for the time being.
Thanks!

Check your front wheel bearings and kin pins by jacking the wheel up and seeing if there is any play at 3/9 or 12/6 o'clock.

i had this although not that severe fitted a steering damper and it went away cheap easy fix for me.could be worth fitting one if not already fitted but as ga says bearing check first

Also i'd strongly recommend adjustable panhard rods.

Yes, when the panhard rod is not horizontally causes many undesirable effects.

"A Panhard rod can be a simple and economical solution, but it's not a perfect one. To be effective, the Panhard rod and its mountings must be sufficiently rigid. The Panhard rod should be installed level, and usually it should be mounted as low as feasible. The rod itself should be as long as feasible. "

www.britishv8.org/Articles/Suspension-Design.htm

Install panhard relocation brackets...

Success

Gustavo

Also check your tyre pressure , recently had some new ones fitted and the jim tyred to kill me on the way back
45psi :ohmy: dropped em downt to 20 and it was back to normal