Hi guys, this is a reply to a PM question which has been asked to others on the forum. So I would like to voice my take on using these on the road.
Originally Posted by parapaul
Yes I have 314mm grooved Vx discs and red stuff pads. I also recently fitted Vx pads & Vx grooved discs on the rear of my GSi too.
To answer your questions, I had also heared that RedStuff pads were not so good when cold prior to when I bought mine, so I kept my half worn Vx pads to refit after the track days, although they are still in the garage 1 year on, which may say something for the RedStuff pads in it's self.
My opinion of the RedStuff pads is that they will be pretty hard to beat on a track day for not fading as the 3.2 is quite a heavy car to stop at speed and when I took the car to Donnington I was extremely hard on the brakes for long durations, not giving them time to cool, yet they still refrained from fading. Having said that, I did also flush new DOT 5.1 brake fluid all the way through the pipes which I would expect to have helped raised the brakes boiling/overheating point.
There is a difference, but it's mainly with the noise that they make. I can't say that I notice if there is lack of braking performance, but I do notice a noise that sounds similar to when normal pads grind through lack of pad material, which is likely to be caused by the harder pad surface of the RedStuff pads braking against the disc when cold.
The noise goes when warm, but warm is all they need to be, not hot.
How long they take to warm up has no direct answer, so I will say as soon as you have braked hard from motorway speed once, or a couple of minutes of town driving (and this doesn't include being stuck in traffic).
If it's Track Day warm that you want (which will be hot in this case) then the warm up lap usually does the trick
(car in action)