White16valver said:
Grooved discs are designed to reduce pad glaze rather than absorb less heat - I think the composition of the disc itself has more bearing on heat absorption than whether it has grooves or drilled holes or not. (though I may be wrong!)
Mine seem to bite well in the wet as well, so I assume that the grooves enable to water to be taken away from between the pad and disc better than plain discs. (again, I might be wrong... lol)
Not sure about that - I imagine so as I don't think the mounting points are different. Will they fit in 15" wheels?
They bitew well int eh wet as teh discs are hot and water evaporates lol, your discs dont' get very wet anyways unless you drive through floods lol.
Grooved discs increase pad wear, they slightly increase the intial bite, but IMO aren;'t necessary, unless you like ragging it and then sitting for 10 mins with you foot ont eh brake to glaze the pads over. The groves function to remove any glaze on teh discs as well as dispersing any build up or hot gasses and dust etc.
I run std discs and pagid fast road pads, and was just about startign to get them to fade slightly on teh one long straight, after a few corners heavy braking, but apart from that they ahve been spot on round anglesey, donnington, bruntingthorpe and cadwell, same set of pads and discs round all of them, plus about 15k road miles, pads have about 30-40% meat on them still
Hubs from williams and valver are identical, mounting for brakes on all the mk1 clios are identical, and i'm 99% sure all teh R5's had the same hubs, since the RSi runs the R5 GTT brake set up.
Doubt 300mm will fit in 15's, IIRC the 280mm ones Northy has just fit in 15's, think there are some 15's that a std 280mm big brake kit won't fit, turbines iirc.