Front should be 17X7 with 225x45x17's 5" or 5.5" bs. Depends on your brake set up. Check the tire manufacturers web sites so you can get the dimensions for the tires...they're not all made the same so a 225 x 17 can be shorter or taller than the standard.
Rear will be 17 or 18 x 8" with 255 x 45 max with 5.5" bs. That will set the rim right in the middle of the wheel well.
Anything wider and you wont be able to stuff it under the wheel wells.
I would do some measuring yourself before you buy anything and talk to whomever you are buying them from so you get the best info before you pop.
I learned the hard way....