and you always answer a question with an informative response, which I greatly appreciate!

 

Below is a link to a P225/75R15 tire. It's not a difficult size to find and will work great. XJ's are light weight so load rating is not an issue and LT (light truck) tires are not necessary unless you plan on going off road. P (passenger car) tires are what was originally installed on all XJ's new and are more than adequate for most uses. There are less expensive options to the tire listed below, however I caution you to not buy off brand tires and stay with major brand tires. Tires are your only connection to the road and not all are created equal, so do your homework.

https://www.tirerack.com/tires/tires...e&autoModClar=

 

I agree with the 235 suggestions (go ahead with). The difference in height is less than .4". The speed difference at 60mph compared to 225's will be 1.3mph. It's negligable. Plus there are a lot more options to choose from. Best of luck!

https://tiresize.com/comparison/