How many miles do you need to drive before a G37 is considered broken-in and can be driven hard? What procedure should be followed to break it in?

Thanks

 

stoxbonds.....I say this with sincerity since I was a newbie here too at one point. You're about to really get harassed on here for asking that question. There are a million threads on here for engine break-in. Please do a SEARCH or consult your owners manual.

 

If you're leasing --> whats a break in?

otherwise, for the first thousand miles keep your rpms below 5k

 

It is in the owner's manual, but the official listing is 1200 miles, and they say to keep it under 4,000 RPM.

 

Just drive it as normal for the 1st 1k, just don't use cruise control so you'll be going through the rpm range rather than having it locked in a certain rpm for an extended period. No need to keep it below 4k rpm, just don't be redlining it. Up to 6k rpm for a brief pass or two won't hurt a ting.
Enjoy your new G! I'd also recommend changing the oil right after your 1k break in. Then change it at 5k and resume your normal oil change schedule.

 

+10000

Around 700 miles on my '10 G37xS, yes she is being driven hard but just avoiding the redline

Once you have owned one of these before, you start to appreciate how hard they want it

 

True!