That's them. The wheels currently on my Z3 are 7x16 5 spokes with 225/50 16 tires.
Originally Posted by greyish
is correct. Stock 17"s on a non-M Z3 have an offset of 41mm on all four wheels.
Assuming that the wheels from your E90 325i sport package are Style 161
The sizes seem close enough for me to at least bolt them up to see how they look. I'll need new tires, partly because the rears I've got are worn out and partly because they're 255/40 17.
Thanks for the link to the calculator.
'04 Volvo C70
'99 Porsche Carrera 4
'87 VW Cabriolet