Re: What was the OEM tire size on a '93 YJ?
 

1993 YJ S models came with 15 X 6 wheels with 205/75R15 tires, or 15 X 7 wheels
with 215/75R15 or optional 225/75R15 tires. Tires were Goodyear Wrangler
Radials OWL.

FYI. The Goodyear Wrangler Radials come in 235/75R15. They fit great, give a
wonderful ride, and look stock.

I have the 235's on my Jeep
see them here.
http://members.aol.com/mark12211/moreinfo.html

There are pictures with 205 and 235s on my web site.