Just mounted Yokohama 235/60s - this is rear clearance (wheel offset is 35 - early GoWesty lift kit). Same tire size as before, but with tread at maximum this is a close shave!
There are a couple of issues here.
First, from my understanding GW doesn't really make a lift. They simply stack a second rubber spring isolator....and often only on one side in the EVC. Which is about 1/2" thick.
For a lift to actually allow for bigger tires it's more than just the clearance at the top of the fender. You need to lift it far enough to make the center diameter of the wheel NOT side below the tightest spot in the fender opening.
Secondly, et35 pushes the wheels outward about 15mm(ish....or more depending on which stock wheels your van came with). Moving the tires outward makes them conflict with the fenders more. The ideal is to have the tires sit more inside the fender. So when they travel upwards they move into the large inner opening of the fender and not into the lip like yours appear to do.