I rolled the fenders on my 350Z after I installed some 19" Luff's and they rubbed. I'm guessing you'll need to because 295 tires are super wide!

It's pretty easy to roll your fenders if you take it slow. I did it myself using the tool and a heat gun.

 

Would these work on Coupes??

 

Absolutely... the G and Z offsets are the same. I've seen pics floating around the forums of the Enkei's on a G35 coupe.