I am sure that you can check the TPIS sensor readings on the maintenance EICAS display that is accessed from the Auxiliary panel,on the right hand side of the flight deck,just behind the right hand seat.
Are you sure? I just had a look at the manual for a 767
optioned with tyre pressure indications. The manuals don't show Maintainance Page tyre pressure displays and I don't see any room on the Maintenance pages for tyre pressure indications. All the data seems to be displayed on the Status page.
Irrespective, this aircraft didn't even have brake temp indications on EICAS.