I have made the wider axles mod, but the only issue they have now is that the rear axle will twist and snap the driveshaft. I have tried editing values in the leaf springs with the anti-wrap nodes as well as the axle itself, but have had no luck. In order to prevent the wheels from popping off, I had to change the beamSpring on the wheel to axle from 11.2 million to 7.5 and the beamDeform to 100k. Otherwise, I only strengthened the links between the wheels to keep them from flopping over and stretched the hubs out.