Tires

what is the maximum size tire that can fit onto a stock 93' Grand Cherokee with NO LIFT? I want to buy some BF Goodrich All Terrain's 30x9.5. Will these fit?

No I doubt they will fit, with a 3" lift you can add up to 31's. so stock these tires would be too big.

I've read that with a 3" lift you can fit up to 32" tires. If i put a 2" spacer on all the springs would i be able to fit these tires?

i take that back... four 1 3/4inch spacers on all the springs....? fit?

You can run 31s with 2 in spacers. So the 1 3/4 spacers should be just fine for the 30s. You can probably run 31s if you want. They may rub a bit under heavy flexing. But you won't run into that kind of trouble on the street. Leave in the stock rubber isolators and you will be close to 2". Any way you shouldn't have any problems fitting a 30" tire.
ByronP