Wheel spacers - reduced turning circle

Struggling to get my head round this. Intuitively I think a wider track should help offroad. I don’t want to compromise on steering, but the width would help counter the lift in banked situations 

I think a wider track will help the steering as well, if at the cost of increased scrub 

No expert on this, but isn't a wider track " helping off road" dependant upon the situation in which you find yourself. For example the further you move the wheels apart the more chance you have of bottoming out on "humps" etc.
Also in reality the distance change with spacers is so small it's makes little difference "off road", so why do it unless your tyres rub? 
Just adding to the confusion, can't get my head around it also. 

I agree with Scimike on the difference a spacer will make off road. And, in my head, wider track = reduced turning circle?
Cheers

Turning circle is dictated by the angle of the front wheels and their distance from the rear wheels. So given that the spacers don't change either of these the inside turning circle should be the same. The outside turning circle will be wider due to the increased track width. The only thing that might affect this is the wider track will put the Ackerman angle (difference between inside and outside front wheel) slightly out, but that's fairly minimal.

In terms of improvements off-road, the Jimnys biggest downfall is lack of ground clearance and it's biggest strength is it's narrow width. Fitting spacers diminishes the width advantage and makes you more likely to get stuck in deep ruts. Keeping a narrow track makes it easier to keep one wheel out of ruts, or to climb out of them if you do fall in. And what Scimike says about clearance over humps also applies.

the Trailmaster 50mm spring lift TUV -approval recommends to increase the track width. Not sure if i remember correctly but I think it was OK with ET-20.
I would not have anymore either, it adds wear to the components.

i have had ET-28 (approx) and 325 tires on my SJ. approx 10cm wider than original each side. Just as bad turning radius, but not worse. (the tires on my profile picture -not drivable on a jimny)

Mine is like a 70's pram tall and narrow 
Turning circle is good 
Regularly have it at 45 degree angle 
Not fell over yet ET0 wheels 7.50 16 tyres