On my 164 I had 205/55/R16 91W, and the pressure was 2.5 bar (handbook), but
for long travels @ maximum speed there was written to increase the pressure
of 0.5 bar. Mine were about 2.8 bar.
Bye

--
Jacopo
Bolzano, Italia
--
Sportwagon 2.5 V6 24V Distinctive