will 20X8.5 wheels with a 40mm offset fit on my car with no issues?

What size tires? Depending on the tire size you choose, might have rubbing issues in the front when you turn.

245/35 20 would be the tire size

The diameter is virtually the same, as is the tread width. The 15mm (.59") difference in offset should not create any rubbing issues.

Our guide shows a 20x8.5 wheels will fit with an offset range of 41-65mm. Pushing the limit to the low end brings the wheel out, pushing the offset limits to the high end pushes the wheel in more. Any time you are close to the high or the low you are going to want to pay attention to the tire size and the tire brand you choose if you would like to avoid rubbing. In this case a narrower running 245/35-20 (like Falken) would minimize any rubbing that may occur. You may also want to look at the 235/35-20 Tire size for the safest option. (this one would look great if you plan on lowering)

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