OP, I'm kind of in the same situation. I'm running a pretty aggressive offset (I don't know exactly since the manufacturer doesn't release offsets) on a 9.5" wheel upfront. I had originally got a package in which the front wheels came with 275/30/19 tires. No good.
I've swapped out to 245/35/19 in hopes that this should do the trick.
Go to
www.tyrestretch.com
It gives you SOME help in deciding where the tires sit on the wheel.