Owner reviews for brake discs

So I got the black drilled and slotted rotors and pad replacements from them a while back, brakes are great. No dust, no squeak, fit like oem, and although not truly black anymore their still darker finish looking rotors so they look good behind the wheels.

I went with Zimmerman rotors and oem pads on my M340i. Perfectly happy with the cost savings over the oem rotors.

I just ordered pads, rotors and sensors for my 16 M235i. Cost out the door was $1000 for BMW OEM parts. Rotors are each unless it's bought in a kit. ($177 each) Rotors are likely smaller on the rear wheels.

I've also got a Type R and Rock Auto does sell one-piece blanks for our cars. They're made by Dynamic Friction. I had a pair of two-piece Paragon front rotors that I bought used but sold them to keep consumables cost down. They did well on track. Haven't tracked the blanks yet, but am registered for an event in August.

You mention cost but not weight differential of the rotors, many people move to girodisks because it reduces the weight at each corner. With regards to blanks vs drilled, I have had no issues running drilled (Zimmerman) on my previous Audi TTs and my current 718. I run a dedicated set for track with Carbotech XP12s, no fade, no issues. 718 is in roughly the same weight category, 3k ish.

S2000 1 piece oem rotors last 2 weekends

Girodisc s2000 oem size 2 piece rotors lasted me almost 2 years of heavy tracking. They only died because my hawk er1 pads took a chunk out of one. They still had plenty of thickness

My local shop recommended trying Galfer rotors which is what they run with Maguras and it’s made a difference on my front brake which is the only one I have had rub issues with. Galfer rotor with new pads took about a week to break in with no rub.

I went with: Brembo rotors all around 288mm front and 232mm rear Tyrol Sport Front Brake Stiffening kit DFC track pads(similar to Hawk HP) I still need to do SS lines and a fluid change, but my car stops very well for street driving. I will be swapping my pads for Hawk Performance Ceramic's though only due to brake dust.

A few thousand miles later and I started to noticed a some shaking in the steering wheel when braking in the higher speeds (60-80mph). I called a few shops in my area that were highly recommend on both here Reddit, yelp, and the forums. Most pointed to warped rotors. One shop says to have the rotors machined and another says to have the completely replaced. What are your guy’s thoughts on having them machined?

I pumped the pedal 100 times but they were still spongy. My worn-out original brakes were better.