Gen 4 Suspension - Help with Wind and Body side to side

I didn't go in depth on the website, I'd remembered H&R bringing them out not long after Gen4 release.

I do use my roof rack a lot so that is not an option to remove it.

I have read that lift could help with stability.

I will be putting some KO2's on so maybe the wider tyres will help.

The main reason why a lift is likely to improve stability is because it is going to use either stiffer springs and or dampers with higher compression and rebound or put another way less compliant suspension which is a band aid for road stability but actively bad for cross country travel. The reason the standard suspension moves about so much is that it is a compromise between road and cross country with a definite bias towards cross country. Fitting a lift is only really necessary to make room for bigger tyres which are the only way to gain more clearance under the axles. A proper lift kit should really have longer springs instead of just stiffer ones that way it maintains articulation and still gives the clearance for the wheels but it won't help with road stability. I think I'm starting to ramble a bit but here is my last point. A Jimny is a narrow vehicle, fitting and using a roof rack raises the centre of gravity on an already high centre of gravity vehicle, setting too and increasing the centre of gravity even more with a lift kit, even a stiff one, is optimism incarnate. What you are really trying to do is improve the roll centre of the car and the only way to do that is to increase the distance between the spring seats on the axles and chassis and the centre line of the car. Everything else is just masking the symptoms.

Steve.

Any lift is not going to help with stability, the net result is to higher the centre of gravity which will make the vehicle more susceptible to body roll and do nothing to improve side wind influence.
As Lambert has indicated most reports of improvement in the way the vehicle feels is purely as a result of a change of springs and damping, nothing to do with the increased height. So if you have no need for extra ground clearance I would look at replacement standard size springs and dampers only, keep the lower stance and it should be even better than the reports associated with lifted vehicles. Better quality dampers will help (read expensive), adjustable Avo, bilstein or Koni would be on my shopping list as they make Jimny specific models. Stiffer springs could also help, but get the dampers first and see how it goes.

After all has been said the Jimny is still a 4x4 and handles just like one, it will never be as stable as a "normal road vehicle", so if you can accept this "feel" it will save you a fortune in modifications.
Have fun
Mike

PS love the look of the roof rack and rear ladder.

I'm always wary of people who make ambitious claims about things they have invested their money in. Cars are lowered to reduce body roll. The same people that claim they have less body roll with lifted suspension will also claim they have better articulation, and you can't have both.
I've also heard people claim that fitting wheel spacers reduced body roll and increased stability. The Jimny has solid axles which remain parallel to the road surface, and the body is suspended from these. The width of the axles has no affect on the movement of the suspension, so these claims are inaccurate.
The Jimny is a relatively tall vehicle on soft suspension. It will roll in corners. It will be affected by side winds. Go with it, don't fight it! You will get used to it. Keeping a relaxed, loose grip on the steering wheel helps as the car is sensitive to sudden steering inputs.