I haven't measured it to be fair but I would say around 30mm extra width.
Hi mike, yes the kit comes with adjustable top mounts included. I'm getting them from KPM. You should get quite a bit of adjustment to cure your issues with clearance mike just depend how much you want to sacrifice even wear on the road with your tyres.
Ha that is true on the road, however mine is just a track toy now so will have even wear with all the cornering and camber! You want to change from 888 to AO48's mike next time around the tyre wear os a lot better and I find the tyre better all around inho.