The 85 TA has vented discs, i have now 30.000 + Km on the clock and they look still ok.
When time arrives for something new i plan EBC grooved black series discs.

the 4x4 models (either engine) have vented discs - 257mm diameter and 22mm thick, replace when worn to 20.2mm (and yes, different calipers too). They have 240mm solid discs at the rear as well.