Originally Posted by
Cross Creek
You could have a machinist make little shims to fit at the top of your drop out slots. There would be no real force on them, so they could be glued in place with JB Weld or something similar. Depending on how deep the slots are, you might gain as much as 3mm that way (make sure your skewer heads will clear the lawyer tabs). Your brakes should have that much room for adjustment, I would think. Reset your B screw and check RD adjustment too.
That would give one vertical adjustment, but the problem is horizontal, seat tube clearance. So your benefit would be very minimal. And, if the dropouts are angled forward, one might even loose space.
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It is a new bike. Either find tires you like, or return the bike. Don't try to cobble a fix together that the manufacture should have done in production.