I just got my first jeep an have a couple questions.
1) will 31x9.50 15 fit under it without rubbing. The jeep is all stock.
2) it sometimes dies like when I start it it will run but if i let off the gas it will die it has only done it a couple times. Any help will be appreciated.

 

you can fit 31's under a stock jeep, but they will rub the lower control arms and the end caps on the bumper.

Check your IAC valve and give the throttle body a good cleaning.

 

How bad will the tires rub?

 

If you wheel it without trimming they will rub fairly bad. I would do 30x9.50s if you don't plan on doing some trimming.

 

This is just a work truck not going to be off road much and nit anywhere bad.

 

Ya I would go with the 30" tires and do a little trimming and the idling problem u shoul def check ur IAC Sensor