So here is an update from my side for anyone interested. A guy from an english wheel dealership was so nice as to borrow an RS from a local ford dealer and test fit the wheels I wanted. The Bola B1 (looks identical to the Rota Grid as they are also a "copy" of the TE37) in 18x9.5 (these were in ET42), here are the pictures of the test fitting.
I ordered mine in hyper black and ET44 (should technically fit since in regards to strut clearance, since some people are running 18x9.5 in ET45 successfully without rubbing on stock suspension during auto X)
Calipers are cleared and have a lot of room.
Unlike with the Rota grid that you can only get in ET38 these should have a lot less poke.
I'll upgrade this post once my wheels arrive and I've put some rubber on them and tested the fitment during driving.
If these wheels fit this would be a great option for anyone wanting to run wide wheels since every Bola B1 is machined to your whishes so you can choose the ET you want and they are only 910€ for a set of 4 in 18x9.5