Hi all,

Over the last couple of months, I have had an issue with the braking ability on my patrol and am my wits end as to the cause. I have a 06 GU IV wagon with a 6.5l ICTD V8 with a chevy auto as well. I am currently running 33in tires. When I brake, the patrol pulls up eventually but nowhere near where it should. It slows up a lot quicker under 60km/h.

This is what has been done so far...
Replaced all brake lines with braided brake lines (for ABS)
Replaced all pads
Replaced master cylinder with OEM
Replaced all brake fluid and bled lines
I haven't replaced the rotors as they are in good condition
Calipers are working correctly

I took it in the the local Nissan dealer and they had a look at it and then said that, in order to analyse it, it would cost a lot due to the amount of time need to find the problem, so I should take it to a brake specialist. (to be fair to Nissan, they looked at it for a couple of days and didn't charge me for it)

Potential problems:
Air lock in the ABS unit
ABS unit not working
O-rings on calipers rolled in
Vacuum pump not working properly (it is not a constant vacuum, more like an intermittent vacuum)

My mechanic spoke to a brake specialist, who made the comment that patrols have craps brakes! Is this the case? I am pretty sure that my 98 GU stopped pretty damn well.

I have heard that I can upgrade to the brakes on the 4.8l but then also have to change rim size to 17in and really don't want to do this unless absolutely have to.

Is there something I am missing?