I had a few dead sets of R4s in a row, and had to stop using them. I couldn't figure out what was going on, and neither could Porterfield. I switched to Hawk DTC70s in the front, mostly because I can order them overnight and they're here the next day from summit. Have not had an issue since.

You guys have me thinking about my rears now. I usually run a lot of rear brake bias with the crappy pads, might try a higher friction pad and run less rear brake on the adjuster.

- Josh