Drivers door sticker shows it is 205/75 R15
I have a P205/75R14
in the oil pan you have drain radiator and tranny fluids first
215/70/15
205/70/15
205/70/15
What size engine?
The correct tire size for a convertible 1972 Oldsmobile Delta 88 Royale is 225/75 R15.
The 1993 Oldsmobile 88 original equipment tire size is listed on the driver's door post and in your owner's manual. In case the placard has been removed and you do not have an owner's manual, the correct size tire for this car is 205/70-15. You need to get you an owner's manual. Dealer, salvage yard, and on-line are sources.
No they are not. But 88 to 99 will work.
It should take P205/75R/15. If that's not the size that's on it then call a local tire dealer to be sure. My wife has a 90 Olds 88 and they should be the same.
FYI Popular Science May 1967 page 88-89 Fact sheet shows 1967 model with tire size 7.35 x 15.
Look at the sticker on the drivers door frame.......225, 75 R15