Re: PBR Upgrade for BA XR8
BossyXR8, I found the 350Z was an excellent drive spoilt by very poor cabin ergonomics - nothing falls to hand. The clutch also had a long travel which I wasn't expecting in a Z. The engine note is to die for though and I really like the way it just got up and boogied! Handling was very predictable and stable. A very competend vehicle.
Back to the brake issue, in my experience which consists of supersprinting, motorkhanas and now racing, brakes are something that needs to be done 100% correctly. That starts with your real requirements. The race pads I use on the race car do not work when cold. By that I mean, it's like touching glass on paper - no friction at all. I drive the whole warm up lap with my foot on the brake (50% travel) to get heat into them. Once hot, they are savage and really throw you thru the windscreen. My XR has the PBRs and slotted rotors and I reckon they stop really well on the street. When I am towing the race car, they still feel OK but make me wonder how much it would really take to get them to fade. The best fluid is a must, I use SRF in my race car and road cars because it really is that good - overkill for the road but I like some insurance with brakes.
The question you need to ask the guy in the GT is, what were they like at the end of the day when he was leaving? A 20 minute session is a good test but 4 x 20 minute sessions is a better test. Good luck with it.