255/30/20 and 295/25/20

I am thinking of running this size on my Z, in the P Zero Nero tires.

I have 20x9.5 and 20x11 JL lines, currenty they have 245/40/20 and 275/35/20 but they are way bigger overal diamter than stock and with my new suspension rub alot, questions is do you think i would be able to fit this 295 on there with a 25 sidewall? I have already modified the fender here are some pics with the current tires which are YOKOHAMA AVS Sports

 

you can see your reflection on the centercaps!!

Yeah you should be able to run that.

 

295/25/20 should do.