The R14 compound was engineered for endurance racing with lighter weight, lower horsepower cars in mind. R14 has solid initial bite, a little less modulation than the R10 or R12. R14 has great fade resistance with a temperature range of 210°F to 1400°F (98°C to 760°C). R14 is as rotor friendly as our R12 compound. G-LOC™ does NOT recommended R14 for daily use on the street due to elevated levels of dust and noise.