Guys. is there possibly an 18 inch wheel and tire that I could get to have for winter? My sport coupe does have the bigger calipers and brakes!

 

Yes there are quite a few. If you go to tire rack you can look for 18" wheels that will clear your Akebono's.

 

how will I know if the wheel will clear the brakes?? just by putting in 2013 g37 coupe in the search? would like to simply have the 225 -50-18..the standard size on the other models for winter. possible right?

 

For 18s you need to enter sedan w/ sport pkg. Here's all those 18s and they will all clear your coupe w/Akebonos, I'd try to find ones w/ the least positive offsets since sedans are more conservative (more positive) with the offsets and you'd want the wheels a bit further out if possible~
https://www.tirerack.com/wheels/resu...oModClar=Sport

 

You don't even have to select sedan to get 18". Search tire rack "WINTER / SNOW TIRE & WHEEL PACKAGES". Then you put in what car you have and you can select 18" tires.

 

They ask for your sub-model/trim too so if you select the sport package they will know you have they BBK.

Also, if you want Nissan family wheels, these are 18" and fit over the BBKs:

350Z 5-spoke: https://i.imgur.com/rk6bf.jpg
G37 sedan sport "duck feet" wheels: https://g35driver.com/forums/attachm...06-sedan-2.jpg

I personally run the 350Z ones