Lowering,Tyre choice,deeper dish

Hello all
Just need a bit of advice 
My car is lowered on bilstein eibach springs 
I've got some bbs rs  et 25
with 7 lips front 7.5 rear 
What is my best tyre options
And could I go wider on the rears with no fouling

Thank you 

I had 15x7 et 25  all round with 195 45 R15 tyres on mine with the same suspension set up, I had the tyres rubbing on the arches at all speeds when going over bumpy bits of road, but I would assume it would be ok if you were to roll the arches. I had the same wheels and tyres on with coilovers and it sat a touch lower but it didn't rub on the arches with those tyres. 

Would I be better of with narrower tyres 
Or is it the offset that's wrong 

Yeah, normal et is 38 so you are already 13mm sticking out without the extra width.  I used to run et 35   7 x 15 with 195-50 tyres on 25 mm lowered springs.  No rubbing anywhere (never 4 up) with plenty of clearance on the rear..

Mine is lowered by  35/40 front 30/35 rear
Would the best option be run 185 45 

Perhaps machining could be an option 

I couldn't say weather a 185 45 would be ok as I've not tried them but I'd say it would help, if it were me I'd look at changing the offset though, or roll / cut the arches