Suggest that you switch back to your ET-25mm wheels, you will be a bout 1/2" better off
for this type of rubbing.
But - enough better? Hard to guess.
ET-38mm = 1.50" which is how much that wheel moves the entire tire outboard
i.e. the outside tread edge outward (relative to the hub mounting surface, and relative to the OEM landcruiser wheels, which are ET0mm).
Does that explain your rubbing the outside edge of drivers side
front wheel (you meant that right?) when at full lock left? yes?
Likewise, ET-25mm=1.0" outward.
If I had chosen to go to 37s, I would have selected 8" or 8.5" wide wheels and offset either ET0mm or, at most, ET-10mm, which moves the tire 0.4" outward - maybe just enough to reduce inside fender rubbing some, but without threatening to causing the opposite problem like you have.
Although - the wheel width should have no influence on the tread edge position, only partial influence (about 1/2 x) on the actual section width at the widest part of the bulge). Still I see no benefit at all - of a wider wheel than the minimum allowed by most tire manufacturers, which is usually 8".
Wider just pushes the rim out closer to rock damage, right? - with less tire bulge to shield it.
Right now, with this situation, the tread edge is very likely to catch the bottom edge of the fender, bend it up, and slice off tread, too.
You had better re-work that bottom edge, bend it under, away from the tire, and secure it very firmly - that square hole can hold a round-head screw into a sheet metal clip-on nut, something like this, on the sheet metal behind what you see.
I think a sturdy pair of flat-nose pliers, or even a channel-lock plier - bend back a spot, just a little, move over, repeat - a little at a time, until it looks good to you.
37 inch tires is "threading the needle" isn't it? - No margin for error in any direction.
