I have a 2013 GT- 6 sp man and my only option is a 3.73 rear. I have added some mods -LT Headers, one piece driveshaft, JLT CAI and a good tune. Not a DD. Will not see a track.

I am trying to avoid getting new rims and new tires if possible. I was trying to get feedback if just two new rear tires would work.

If I went with Nitto 555 or Nitto 555R or maybe Mickey Thompson in just the rear. I have stock 18X8 rims. 235/50 are stock tires. The largest recommended tire is a 255.

Is this tire enough to improve straight ahead grip significantly?

Need your thoughts.

 

Yes a semi-slick tire would provide a lot more grip. The Nitto NT01 is very good too, more of a road circuit tire but extremely grippy.

 

The Mickey Thompson street comp is a nice tire. In my experience, the 235/50/18 size is too narrow for good take off traction on a stock GT.

 

I agree with both comments above.

The standard advice around here seems to be Michelin Pilot Supersports...

But to really take advantage of even a stock Coyote, 235s or 255s aren't really up to the job.

Who did your tune? Are they aware of the risks of messing with AFR and knock sensor parameters? Quite a few early Coyotes ate their #8 pistons in the learning process.

 

I have had good luck with 255-45-18 nitto's at the strip