I have a 1995 Jeep Grand Cherokee Laredo. I'm planning to put 2" spacers on to lift the body just a bit. Does anyone know what are the biggest tires I can get on my Jeep with this small mod? I have the stock 15" wheels. I currently have 30x9.50's on it, and would like to go up to 31x10.50. Can I fit those with the 2" lift???

I had a 95' Grand Cherokee two years ago with a 2" spacer lift on it. I was able to fit 31x11.5's with minimal rubbing. It also depends how much sag is in your coils, I replaced mine with newer springs and it held up fine, I good way to tell what you can fit is bust out the tape measure and measure how much distance you have from the fender add 1" and then measure how much spring rate you have before bottoming out, if you have less space in your fender than your spring rate then there will be rubbing.

Also, which kind of 15" wheels are you running, there are the 15x8's and the 15x7's on the x8's you can run a 31x11.5

You should be fine with the 31 10.50s. A little trimming may be necessary, but can be done very easy will some hand snips.