What are the tallest tires able to be run on 3.73 gears with out any problems?

 

According to the gear charts I'm able to find 32" and that puts you at good gas mileage and no pulling power. 4.10 is factory standards with 33". If you do a search and type in Jeep gear ratio you should be able to find the chart I found a few web sites with it. Good luck