1993 Cadillac DeVille Owner's Manual - Page 320
1993 Cadillac DeVille Manual
Page 320 highlights
When to Check Check your tires once a month more. Your tire or pressure shouldbe: 30 psi (210 kPa) (Front and Rear) 35 psi (241 kPa) (Coachbuilder Package - Front and Rear) 32 psi (220 kPa) (H.D. Livery - Front and Rear) 32 psi (220 kPa) (Touring Sedan - Front) 30 psi (210 kPa) (Touring Sedan - Rear) Recommended tiresizes are: P205/70R15 (Front and Rear) P215/75R15 (Coachbuilder - Front and Rear) 0 P215/60R16 Goodyear GA (Touring Sedan) 0 T125/70D15 (Compact Spare) T125/70R15 (Touring Sedan - Compact Spare) Don't forget your compact spare tire. Itshould be at 60 psi (420 kPa).