18" Wheel help
Not sure if I want to go that wide of tire up front.
Is the bore size good at 72.6?
Your prerogative, the 18x8.5's should work with a +25 offset and anything up to a 255 tire, a 245 on that wheel would be a pretty easy fit.
The hub bore technically should be good, but it will depend on the design of the rim and what the actual wheel cap diameter is. The Mopar hub diameter on 73+ brakes is ~2.7", so it's less than 70mm even being a little generous with tolerances. The problem is that not all wheels maintain that hub bore straight through to the cap.
Like my Enkei RPF1's, they list a 73.1mm hub bore which is plenty. But, they taper down to a 65mm cap. And because the mopar hub has to go all the way through the RPF1 wheel, well, I needed to have the front wheels machined so they were 73.1 all the way through. So, you could see if you can figure out the wheel cap diameter, but even then it will depend on the thickness of the face of the wheel at the mounting surface. The RPF1's are very thin there, so, the hub has to go through the wheel. Some wheels are much thicker there, so the hub doesn't actually pass through to the outside of the wheel. Just depends on the wheel construction, and even having looked at a lot of wheels it's hard to say without having seen them in person. Even with the RPF's and knowing the cap diameter is 65mm, you have to see the actual rim you want to use to know that the hub is going to protrude all the way to the outside.