I have 36k miles...The fronts have 6mm left and the rears have 3mm. I do get an intermittent squeal when braking hard and high speeds.

Anyway. I am definitely replacing the rears, however, i'm not sure if I should just do the fronts at the same time....6mm seems like its about time...

I'll be doing rotors and pads...

What do you think?

 

6 mm is a lot of friction surface left. You don't need to replace them but you could.

I think you're the second guy to mention that your rears are wearing out faster than the front. It seems odd to me. I have 68K. I replaced the front pads a while back when I upgraded to the Racing Brake 2 piece rotors but the rears are still fine.

 

Rears wearing faster = lots of VDC intervention

 

Mine also, at 30 000 miles i changed the rear, the front rotors seems a bit wrapped but pad are ok. You mentionned VDC, and it's true, here in canada with snow the system works a lot

 

I had my car in a couple of months ago to have them checked for brake judder. They ended up replacing the pads in the rear but not the front. The rear pads were at 3mm while the front were at 5mm. The service advisor said it was due to the design of the Gs braking.

 

My G has about 13000 KMs on it but the rear pads has about 60% left due to the VDC kicking in in the snowy weather whereas the fronts have 80% left.

 

This exact same thread came up on the G8 board at the exact same time, lol, and the exact same things were said about VDC. The guys who drove hard, and the guys who lived in crappy weather areas were experiencing rear brakes failing sooner than front.