458 GT2 Brake Pressure

I have a problem which I am unable to fully rectify through setup changes and I was wonder if others could also share there experience as this might help me out. These days I am a gpad user so braking on the limit with some of the non ABS cars can be rather tricky and sensitive for me and I can leave allot of time out on the track if I don't get it right. Obviously a part of me would like a brake pressure adjustment however that argument is best left for another day. I also enjoy the challenge of not having such option. What I have noticed with the GT2 cars is when initially driving the default setup i can roughly apply 50% brake pressure until I receive a locked brake. The more I set the car up correctly through things such as brake balance, dampers/weight distribution and alignment I can apply more brake pressure before locking up. This tells me I am heading in the right setup direction. I find the C7R much easier to setup for braking stability and lock ups and when I get the setup right for me I am able to apply 95%-100% brake pressure however for the 458 this is a completely different story. At best I can only apply 75%-80% brake pressure prior to lock up. Now that i have upgraded to a xB1-e controller I have a little more feel with the longer trigger depth however its still tricky to manage. A good test for me is the hard braking into Spa's Les Combes and the final chicane. I also see allot of other drivers locking the 458 brakes so it leads me to the question, can this car ever be setup to apply 100% brake pressure? If so can you please share some wisdom..?

 

Shouldn´t the brakes allways have enough force to block the wheels? That´s how I´d set up my brake. As if I can go to 100% without locking, the car might handle 110% without locking and I am loosing time as I have to brake earlier.

Also important, which tires are you using and for what temperature is your setup?

IIRC I can usually apply full brake at top speed before Les Combes until I slow down. Than, as the downforce reduces, I have to back off, of course.

 

I do use 100% brake pressure in 458 but only in the initial phase of braking after a very long straight (Les Combes, Bus Stop, Monza T1, etc). If I don't ease it up then the front will lock up or the rear will step out (depending on the setup). I never use full pressure after short straights like the one down to Bruxelles or after Pouhon.
When I tried driving C7R after being so used to drive 458GT2 my first impression was that the vette had no brakes. I had to apply much higher brake pressure than for 458 during the entire braking to make the damn car to slow down fast enough.

 

@Mr.Mugel - Thank you. I believe am using the correct tyre. For Spa on a 10 lap race this would be the Soft tyre where I aim for 35 PSI and 5 degrees temperature heat spread from inner to centre. I even tried running allot less front camber to see if this would improve lock ups. It did however only very marginal. I do expect 100% brake force to lock the tyres however I was not expecting this so easily from high speed braking.

@demetri - Thank you also for the feedback. I rate you very highly and you are a very quick driver. I guess I did not fully explain myself in my op. I can also brake for 100% however for only a split second (a very quick squeeze) and then release. I can have some trouble with this brake method on the gpad as sometimes I release too much and miss the apex or other times not enough and lock a brake. It is hard to find the bite point and it can result in me varying brake pressure 2-3 during the brake phase. To be safe I brake at 75% in the initial phase and use the gearbox a little more. I know this is not the best method and I loose time because of it. I am happy that your experiences between the two cars are similar to mine. Maybe my further setup improvement will not aid in this particular area so I guess I just have to work harder at it to improve my braking for this car.

Thanks guys