I was recommended this place I hope someone helps me I have a G37 2012 coupe, but I bought the caliper set of a G37 Sport 2010 I needed to know what size of wheels I need because the ones I have do not fit help please

 

Welcome to the site! What wheels do you currently have? If you have the original Infiniti 18" coupe wheels you should be able to clear the big brakes without a spacer, or possibly just a real small one (like 5mm or less). If you have aftermarket wheels you'd need to use these templates on your current wheels to see how much spacing you'd need.
https://www.myg37.com/forums/brakes-...templates.html

 

thanks I have after market wheels 20 on my G37

 

Maybe a small spacer will get you there if you have room to go out without any fender issues.