What size rotors do I have? What suggestions might you for after market rotors or what brand if I were looking to replace? After how many miles should the stock rotors be replaced? I feel like a vibration in my break pedal.

 

You've got the sport rotors. There are only two sizes, sport and non sport; I forget the exact dimensions.

I recommend Stoptech if you want something midrange, centric if you're on a budget, and AP racing, or Z1 two piece rotors if you've got money to burn.

I would say to replace your rotors as necessary, probably every other brake pad replacement, 30,000 miles perhaps, depending on your driving style.

Inspect your rotors, touch them ONCE THEY ARE COOLED DOWN, and see if they feel like a ruffles potato chip. They should be smooth.

 

Welcome to the site, the Sport rotors are 355mm Front 350mm rear.

 

What type of brakes does the g37s have stock (brembo)?

 

The last Infiniti to have brakes manufactured by Brembo was 2004. Since then, the big brake kits have been manufactured by Akebono