Originally Posted by Damon
Correct, four stud wheels and four pot calipers. Pads and calipers are the same, (just a different colour and logo on the caliper) Disc castings are the same but drilled differently.
As coupe discs are unavailable here I have had the GTV/GTA 305mm discs redrilled to 4 stud which works fine.......
Hadn't seen the post on the coupe forum but i'm sure its possible. Coupe has curb weight of 1310kg, certainly feels as if any of the weight loss is in the front end- feels less nose heavy than any of the V6 FWD alfas...
I can't specify year or model.. but i am quite sure there is some differences in both pad thickness and disk size on some of the Coupe and GTV/Spiders....Not all has 305mm disks. I think some GTV's runs with 310mm disks, and some Coupe 315mm disks. Some disks are wider then others, so this is also a factor.. The Caliper is always the same though.
Also pad thickness vary from 14mm to 17.5mm(17.5mm being the standard thickness of the 305mm GTA system)
I've gone through 6 sets of pads this year,(2 cars) bought them from 5 different vendors, and none of the vendors seems to know which equipment fits where.. It really is a big mess IMO..
For now i settled for the OMP pads for the Original 305mm 4 pots i have on the Twinny. These are 17.5mm and relative inexpensive at £30-40.
They won't work with the aftermarked 4 pot brembos which max takes 14mm pads. Cheapest pads i could find for this system was £100.
With 3 sets of pads/year i save £210 in switching to the Original 305mm system system. It cost me a pretty penny to convert the Twinny to accept the GTA suspension uprights( not as simple as some think!) but in the end it should pay off in pads alone!. Also MOT wise the original brakes are easier to clear.
On the V6 i have the 330mm system, i use standard disks and standard pads. This system brakes about as hard as the 305mm, the difference being no fading on the 330mm
Initially i had a the 305mm on the V6, but fading was a major problem on this car.Switching to 330 completely eliminated fading during stints. ( i usuall drive around 15-20 min stints)
I haven't had much chance to test the original 305mm brakes on the twinny, but with the Red Dot 305mm i had on it before, i never had any problems with fading. So i am hoping the original 305mm won´t fade on the Twinny either.