Quote:
Originally Posted by bmxr
I am amazed you got SIX days out of stock pads. If you were hard on them, they'd be smeared in a day. I run Carbotech XP10 pads and have no issues with my brakes at all.
The wheels get very, very hot, but are most definitely not deforming at the hub so much that the caps fall out, as someone else suggested. The tabs get soft when they are riding in a 200+ degree wheel.
One thing I did preemptively, based on experience with my WRX, is replace the stock lug nuts. I would get stripped nuts every time I hit the track with that car. Yes, I own a torque wrench. No, I did not cross thread them. They are of terrible quality.
My Primacys are working well and have several weekends on them. Coming to the end of that road, though...
Oil cooler goes on this week, as I would like to see temps stay well below the 270 max I am seeing now.
I really don't expect anything else to fail at this point. I just want 17x9 wheels and stickier rubber 
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Just wanted to chime in on this. Yes, racing pads are a MUST. I have not run a lapping day on stock pads but I can say the four lapping days I've run with Winmax W5's has been incredible. I just did a full day covering approximately 180 miles at Pueblo Motorsports Park today. Between the pads, Castrol SRF React brake fluid and Potenza RE-71R tires, I can stand on the brakes all day long with zero fade. I'm pretty sure the heat has discolored my calipers already, but ironically my center caps are still snug as a bug in a rug (maybe I'm pushing my luck and should remove them).
On the subject of tires, a lot of people say the RE-71R is only good for a quick sprint or one good hot lap before they fall off and I don't know what they're talking about. I was lapping consistently all day, the only variation in time due to driver error. They started to fall off only when I wore the outer shoulder off because I don't have enough front camber yet. I'm on my second set only because I was moving cross country and didn't want to drive 2,000 miles on my first set which is still at ~4/32nds; I'll get another event or three out of them I suspect!
I broke a wheel stud this morning from said terrible lug nuts and am going to break another one tomorrow when I go to swap my pads. Any recommendations on a good set of lug nuts? I was considering getting ARP extended studs eventually, too. Friend of mine has broken his fair share from swapping wheels so many times at the track, too. I was 90% sure I didn't cross thread mine, either!
Oil cooler, yes. My temps are creeping just above 270 and that seems like danger zone territory to me; the temp has stayed consistent with zero power loss or warning signs, thankfully. I run Pennzoil Platinum Euro 5W30 in case anyone cares.
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Current: 2005 Porsche 911 Carrera S 6MT
Previous: 2 BRZ's, 997 C2S, C5 RS6, C4 S6, B8 S4, GDB STi, S30 240Z, FC3S RX-7 TII, AW11/SW20 MR2, E30 318is/325i, etc.