iirc the weight distribution on a rex is 58:42, so pretty far from ideal. Am currently also running standard shocks and springs, so the nose dives a fair bit under braking. Suffice to say, that one day (17 laps) at ring took away most of front (standard) pads, while the rear were barely touched.
Make no mistake, the front is doing all the work on a rex. Contrary to popular opinion, the brakes on imprezas are nothing to shout about as standard and six pot conversions AP 355 mm brake conversions are very popular. Even the standard 330mm Brembos fitted to STi's are generally found wanting for track work.
Edited: as I verified my failing memory on teh weight distribution
Originally Posted by Cuore_Sportivo_155
the wrx wouldn't need the same size front brakes as the gta, since the weight is distributed more evenly between the front and the rear axle. I'm sure the rear brakes are bigger than the ones on the GTA.
Take a look at beemers also, they get relatively large rear brakes also (compared to FWD cars) due to the near 50/50 weight distribution.