Cadillac 1993 Eldorado Owners Literature page 321

When to Check Check your tires once a month or more.
The Eldorado tire pressures are:
0
Front - 28 psi (200 kPa)
Rear
-
26 psi (
179 kPa)
Recommended tire sizes are:
0
XGT4 Touring Design Blackwall or Whitewall (P225/60R16)
The ETC or (4.6L Sport Coupe) tire pressures are:
Front - 29 psi (200 kPa)
Rear - 29 psi (200 kPa)
307