G-LOC Mazdaspeed3 FRONT Brake Pads

R12/R10 combo

I have the R12 on the front and R10 on the rear of my track Speed 3. These are a necessity for a car that makes some power on a track day tire. Takes the heat and stops the car!

G-LOC R16 brake pads for the win!

I bought a stock 2013 Mazdaspeed 3 two years ago, as my daily driver but also as a track toy. My first upgrade was Motul RBF 600 brake fluid followed quickly by better brake pads, but at least at Laguna Seca the car devoured brakes. In January, at Damond's recommendation, I upgraded to G-LOC pads (R12 front, R10 rear). They survived with flying colors! After three successful track days I finally made some modest engine tweaks (also using parts from Damond), bumping up the stock 263-horsepower by 10-15% but more importantly making a broader power band. My next day at Laguna Seca incinerated the R12 front brakes (and melted off wheel weights). In a little over two hours on track, I went from ~90% of the brake pads to about 10%. A big brake kit (BBK) and brake cooling ducts are in my winter plans but I wanted to squeeze in a Black Friday track day at Laguna Seca as it would be my 50th time on track, and I couldn't think of a better place to mark such a milestone. That meant a patch for the brakes to get me through the day. Damond's suggestion was G-LOC R16 pads (and Motul RBF 660 fluid). I was hesitant since the car is also my daily driver and I'm too lazy to change pads before and after track days, but was assured that the R16 pads are similar to the R12 pads for street use: squeaky but adequate, just not at their full performance. The R16 pads performed admirably, with minimal wear and no sign of significant heat damage. I was super happy! (I didn't manage to beat my previous-best lap time but came close; the shortfall was because even with RBF 660 I boiled the fluid. The G-LOC R16 pads performed well, easily exceeding my hopes.)