18x11's??
 

OK, I know this has been beaten to death, but if I went with 18x11 R and 18x9 F what offest and tire size would I need. I'm looking for the widest I can go without rolling my fenders, with no rubbing. Even if I were to drop my car a little bit. Can anybody help me??

depends on the offset but...

275's front
315's rear

... are a good combo

^ can you go wider for the rims? like 10" Front and 12" or 13" Rear

12s are max and youll need a lil bit of work....................maybe a 13 if you go Wide body

Use one of the offset calculators above and compare the new wheels to your current ones. Then check the car with a tape to see if you will have any clearance problems.

what offset calculators??

Now 11" is certainly doable wit the right offsets :)

For an 11" in the rear you're looking at about a +25-28 offset with no rubbing issues. Even with 295-305 tires. Some fender rolling would be smart thing to do.