Pay to play, I guess. Tires, pads, and rotors are all consumables when driving that hard and vehicle mass multiplies the effects.

I'd wear that consumption like a badge of honor. It's obvious you push hard on track!

 

What pads will you be using with the new rotors?

 

The pads in the photo above are EBC RP1, and I installed those again, since their performance is great and they're ok-ish on the street, so I don't have to keep swapping pads.

 

Imagine the stresses on a tracked Camaro or Mustang at 700-800 pounds more again.

 

I've tracked long enough to see many brake pads crack, as long as they work and don't fall apart, I'm ok with it. These lasted close to the end of their useful thickness, so good enough for me.

I tried EBC SR11's too - sintered metal pads. They handle heat much better, but for the size of the brakes in the Emira, they have way too much friction, and it makes the initial bite way too strong (it breaks tires loose), and they're hard to modulate.

 

I've got 5 track days on my brake rotors, and 4 on the pads below. Rotors have about 75% thickness left, but have too many cracks to keep tracking, and the brake pads have about 60% left in front, and 40% left in rear, but they're also cracking due to heat. I've never experienced such issues when I had my Elise.

@shinoo's rotors with the gold hats kinda go with my car. Neat!

Getting the caliper bolts out was quite a chore, though, since they had an enormous amount of cooked thread lock compound in them. I had to blow torch the hubs to expand them enough to be able to turn the screws. Once I cleaned everything up, they went back in very easily.

View attachment 1398511
Most cracks above are surface cracks, but the ones coming out around the drill holes go all the way through.


View attachment 1398512
Pad is crumbling. Front and rear are the same.

View attachment 1398513

Stock Lotus rotors will notoriously die quickly on track. My 2011S stock rotors cracked in 2?3 days. It doesn't take that much to do that even with stock pads. THose pads don't bother me btw. Confused as to why rears are more worn???? Sport mode relying on TC?? Those pads from EBC you have are their best effort to date but.......Drilled rotors are just plain stupid things...oh but they look cool hehe........Next set buy Pagid RSL29s. Bullet proof durable and even better..My go to pad for the past 20 years.
Think I got ~30 days out of my Ultradiscs......
The hats match up nicely but you cook them, they will change colors. What you are seeing is why I keep harping about weight. Pull the seats , battery and battery and you can easily drop 100lbs......balance improves too.

 

Next set buy Pagid RSL29s. Bullet proof durable and even better..My go to pad for the past 20 years.

Are the RSL29s streetable?

 

Those rotors were going to fail one day because they're drilled and they all do, but they were still 100% absolutely OK to use. Keep using drilled rotors until a crack you can catch your nail in reaches the edge, or is 50% of the swept area in size.

 

Been using them for YEARS. If they get noisy, just stand on them once or twice to remove any glazing. They come to life real easy too.

 

Thanks. I think I'm starting to see where DS2500s fall off.

 

Marcin,

Thanks for posting the info and pix. We've heard from other clients as well who have suffered similar life. That amount of cracking is OK. When the cracks reach the edge or another hole - then they are definitely done.

You'll be pleased with our ULTRAdiscs - which we also have with Silver (see below) or Black hats. Your gold hats looks sweet!

I've found the DS2500 are good on the street but not aggressive enough for me on track.

 

DS2500s are are a damn good pad ....till you kill them which takes effort and prolonged heat cycling.

 

The weight isn't really the issue. Cross drilled rotors are well known to crack for most applications. I experienced similar cracks when I had cross drilled rotors on my Corrado which weighs 2800lbs (likely less at this point) during track days. I've completely moved away from cross drilled rotors and never saw cracking again. There is some thought that the way the cross drilling is made impacts crack resistance, but I've never personally tested that hypothesis.

 

I've always been a fan of Cobalt pads. But...pads are like holes. We all got a favorite one.