i have a 37 coupe non s and planning on getting some rims pretty soon..
rims are
19x8.5 35et or 15 et
19x9.5 40et or 15et

im lowerd on the tein s-tech...
i wanna go with a flush type set up or something close to it... will add spacers if needed when i have more funds....

 

The 15 offset will be aggressive, so you're probably better off with the 35 and 40 and some spacers. With those offsets and wheel sizes, you have a few options. I'd think about a 265/35 rear, 245/40 front set-up.

 

245/35 with 35+ offset n front
275/30 with 40+ offset n rear

 

A 245/40 and 285/35 combo offers a lot of different options.