Fresh out of my second track session at Knockhill in the F56 MCS and I thought I'd share some reflections again.
Some on-board footage
As you can tell from the picture below, it was a gloriously sunny day (rare in Scotland). Track temp was high 30s and air temp approaching 20c.
Last time I was on stock rotors with EBC yellowstuff pads, this time I was on EBC's grooved/dimpled rotors and bluestuff pads and I have to say it was night and day difference. I had a lot more confidence on the brakes and experienced very little in the way of fade, even after 10 or so consecutive laps.
One thing I haven't entirely got my head around though is the brake balance. Coming back to the pits the rear brakes never felt like they were getting to higher temps that I saw last time. I'm not sure if it's because the front brakes are now in relative terms too
good, or whether the stock suspension is too soft up front, but under heavy braking it almost felt like the car was almost entirely on the front brakes (perhaps with the rears becoming unloaded?). It's less of a problem as the front brakes are obviously the ones designed to deal with majority of braking load and have the cooling vanes and vents from the front of the car, but ideally i'd like to try dial backwards the bbal but I have no idea how easy that is to implement on a road car.
Rubber wise, the relatively warm temps meant the tyres were screaming bloody murder and this was easily the limiting factor in terms of lap time. I was on PS4s up front and Pirelli Cinturato on the rear - both about mid-way through their tread. I dialled up the rear pressure a bit to help with turn in and felt that was a better balance than I had last time. Cold pressures were about 38psi front and 35 rear. Front left is the one that takes the abuse and that was getting towards 47 psi hot pressure which got me a little worried at times.
Tonnes of fun even if there was a lot of very
exotic cars on track.