If your talking about the M wheels off the sport model they are made by Enkei and I have them on my 97' Q45. They do NOT fit without a spacer installed. Trust me I had my mechanic try it, the rears would fit but the fronts wouldn't clear the strut due to the offset of those rims.
If you choose to go the spacer route (the only way these will fit) I highly recommend that you find a set of high quality aluminum ones. I got ones that were like 1 1/4" which was the size that they told me I need based on the offset of the stock rims and the offset of the replacement ones. You can find cheaper ones but if you really want to do it you gotta do it right. I spent nearly $300 on them.
Once you get the spacers the look is awesome. Moves the rims out to the edge of the fenders.I also lowered my car with Tein springs and KYB SR Special replacement shocks/struts. the car handles aweseome. I put Bridgestone Potenza 050A Pole Postion 245/35 19 tires. I will change to 40 sereies when I replace the tires as i was worried they wouldn't fit but the will. BTW, no rubbing EVER and no bottoming out EVER. Love the setup, but with the 35 series tires expansion joints and other sharp bumps hit hard.
Mail me if you want some pictures of
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