You can put a standard full size spare in a 95. The stock size was 225/15 and mine came with a full size spare. You should be able to go up to 235 with no issues.
If your Jeep is equipped with the standard wheel nuts, they are actually 18 millimeter steel nuts with a stainless jacket. When they rust or the jacket is damaged, the original 19 mm or 3/4 inch socket will not fit. If you can afford it, you'd do well to get a whole set of new nuts, but if not, make sure you have an 18 mm. wrench and maybe a small chisel on hand so that you can get off the nuts when they're damaged.