Does anyone know if it's possible (or if available) for me to replace the rear 2-piston calipers for 4-piston calipers on my 2013 IPL G37? Several people have told me that the larger calipers will not fit the rear.....please help me out with this issue.....before I finally have to powder coat what I have and find out later that larger ones would have fit!!

Thanks,
Leon

 

Curious about the same, I'm looking to upgrade my brakes a little, 6 piston fronts and move the 4 pistons to the rear, don't know what will fit and what won't.

 

If you don't change the fronts to an even larger caliper your brake biasing will be way off, having the same size on front & rear won't be compatible, although there may be a way to change the master cylinder biasing but have know idea how

 

No, they're not a direct fit. You'd need to fabricate mounting brackets and lines. They'll fit if you get appropriately sized wheels with the correct offsets. They are not plug and play.

Even if you are tracking the car, you do not need any larger brakes in the rear.

 

I purchased a G37 IPL converible (as stated above) and just had the Dealership install my big brake kit last weekend (AP Racing). Now, we're running into an issue with vibration at speeds between 60-70mph. Has anyone had similar issues with their upgraded brake system? The master techs, along with AP RACING techs, are completely stumped at this point on why this is happening. By the way,the vibration is more prominent when the top is down. Also, there is no vibration when I apply the brakes at that speed....even letting go of the steering wheel....the car stays straight. ****please help!! Any suggestions? *****

 

I just have one question, Why do you want 4 piston calipers in the rear?

You doing any circuit racing?

 

No...I just like the look of a big brake system and the fact that the red calipers match the interior. **just for looks, basically**

But if the wear-in period of 250miles doesn't fix the vibration issue, then I will definitely re-install the OE brakes and call it a day!

 

Possibly a sticking piston on one or both of the rears?

 

Would it be in the rear or possibly front pistons as well?