will they fit?
i have roll arches and relocated bumper tab
also what size tires to use
245 30 17
225 45 17?

rp03

17x8.5 +30
17x8 +40

 

yes they will just fine.

 

Instead of a 8.5" +30 I would go with a 9" +40 with a 245/40 tire. The tire will have a slight stretch. Are you lowered? You could go with a 255/40 but you'll need to make sure you have the clearance. For the front 8" +40 with a 225/45 is fine but it'll be slightly bigger in diameter when compared to the 245/40 rear. Also are your front fenders rolled? If you're worried about the tires chewing up the front fenders you can go for a 215/45 tire.

There is also an 8" +48 option in the front. It will probably look a little sunken in compared to the rear but you shouldn't worry about the tires grabbing the fenders if you take a hard corner or turning the wheel on a steep incline. A 3mm spacer can help push it out just a tad.

 

17x8 +45 with a 225/45/17 ate up my front fenders. all I did at the time was trim the fender liner and bend the bumper tabs but the width of the tire flipped the lip of the fender out. I switched to a 215/45/17 and then hammered the fenders back in place and now there's plenty of clearance.

 

The wheels are used
17x8.5 +35. 8" +40

 

Ok a 17x8.5 +35 is better than a +30.

215/45 front 245/40 rear (if you don't mind it slightly stretched in the front)
225/45 front 245/40 rear (if you are certain you have clearance in the front but then your diameters are a little off)

or 225/45 front 255/40 rear (if you want to maintain the same diameters and don't mind it being meaty in the back as well as having clearance for it.)

Hope that helps. =)