There's a fourth spec you need to match, offset. For the stock wheel, a 17x7 H2 +55mm:
- diameter: 17"
- width: 7"
- bolt pattern 5x108, as you note
- offset: +55mm
Note that offset will have to change as you change rim width or the wheel moves inboard or outboard. The difference is half the rim width change. A 6.5" rim (1/2" or 12.7mm narrower) with the same wheel location will be 55-(12.5/2) = 49mm offset, like the 16x6.5" steel wheels on my snows.
Edited by fbov, 04 July 2018 - 11:58 AM.