Any gain from 996 GT2 rear wheels on 996 Turbo?

[tracer.smart]

Anyone out there running the 18” rims, 12” wide GT2 rear wheels on a 996 Turbo?

I am considering whether to add stock 17mm spacers to my 11” wide wheels or swap the wheels to the wider GT2 spec.

If I did, would I notice the difference?

[tracer.smart]

Thanks for the responses.

I have fitted Oz Challenge wheels, still 18”, but the offsets on the rears are different to the original wheels by 17mm. After trying a few sets of hub centric spacers, I settled on 18mm which are just right from Jasmine Porsche.

Alternative was to go with 12” wheels with Turbo offset, but I think the clearerance wouldn’t be there on the inside.

This is not my car, but these are the new wheels: