The Tire pressure would depend on the size and type of tire you have mounted. Tire pressures are molded into the sidewall of the tire. Read the fine print and you'll find the answer you seek for your particular tire.
The correct factory tire size for a 1992 Jeep Wrangler is 215/75R15.
Tire pressure does not depend on what vehicle you have but what tires you have. What size and type of tires do have on your Jeep
The wheel should fit, the tire depends on the wheel.
The correct tire size for a 2014 Jeep Wrangler is P225/75R16.
The correct factory tire size for a 1998 Jeep Wrangler is P215/75R15.
The correct factory tire size for a 1993 Jeep Wrangler is 215/75R15.
The correct factory tire size for a 1997 Jeep Wrangler is P205/75R15.
The correct factory tire size for a 1987 Jeep Wrangler is 215/75R15.
The correct factory tire size for a 2007 Jeep Wrangler is P255/75R17.
The correct factory tire size for a 2014 Jeep Wrangler is 255/75R17.
The correct factory tire size for a 1994 Jeep Wrangler is 215/75R15.
The recommended tire pressure is listed on a sticker on the driver side door jamb.