Guys I need your help. I have found a really nice looking set of 19/8.5's for Z's made by a company called adr. The wheels are m-sports and the problem is they are not staggered. Most of you guys are going with a 19/8.5 front and 19/9.5 or 10.5 rear. Does anyone run same size rims all the way around? My stock 17's are the same all the way around aren't they? What's the purpose of having the offset. I figure it will make rotation much easier and cost less. Tire size if these rims are ok? 245/35/19 front and 275/35/19 rear... Wheels are 5x114.3 bolt pattern and 35mm offset.

It really comes down to cost the 8.5's all around are 799 and the staggered set is 1099.... is it worth it?????

 

8.5 is too thin to fit a 275 tire. the most is 255.

 

Tons of people have or have had the Adr m sports. I was going to get them myself a while back. To answer a couple of your questions:
yes there are people who run the same size wheel all around and most of them also run the same size tire all around or a very similar tire (maybe 245 front, 255 rear).
Your stock 17's are staggered, i think 7.5 front and 8 rear, something like that.
Like mgl said, 275 is too big for 8.5 wheel.

I would recommend spending the extra money if you have it to get the staggered setup, it looks good on sportscars. If you want the same size wheel all around, get the same tires all around or something like 245f, 255r.

Hopefully some msport people will reply and might have better answers to your questions.

You can try pming Bertg on here, he has those wheels staggered.