So I just got my Brickyard 03' touring Z. It has the stock 17' rims (stock suspension), but I'm looking to get some 18' SSR's. I plan on doing 18 x 10.5 +15 in the rear and 18 x 9.5 +22 in the front. Will the offset difference look silly or make any difference? I mean I don't think it will since its only 7mm difference. Will I be able to fit a big brake kit? Will I have to get Fenders rolled? Any input would be lovely.

Rims - https://www.z1motorsports.com/ssr/ss...e-p-12657.html

 

Keep in mind that there's a 25.4mm difference in wheel width. The front 9.5s will come out a net 20.7mm, just about perfect to maintain good steering response.

That said, those offsets are fine. Matter of fact, probably the best fitment you can use on a Z. As far as fenders, you may need to roll the rears as +15mm offset puts you right up to the inner lip and depending on whether you're lowered or not (or WILL BE lowered or not) and size/brand tire you use, you may experience little fender gronks on bumps. Slight roll at the middle is all that's needed but if you do roll, might as well do the whole lip, at least 1/2 roll.

The tires you'll want make a diff as well. 245/40 F, 275/40 R is the sweet spot. Diameter maintained and no issues with TCS/VDC if so equipped.

 

Finally a new member that is getting the perfect wheel fitment off the bat....good for you sir