I got wheel spacers on mine. I reckon they're a better idea than using wheels with an increased offset. Yes, you're gonna knock out the bearings quicker with bothe, but with increased offset on the wheel your more likely to fracture a rim because the stresses are in the wrong place.
With regard to turning circle, they do make the steering quicker thus decreasing the turning circle. If I could be bothered, I could do you a nice essay on pitch circle diameters but I won't, just take it as read - they work.