I have a set of 38in tires and i need 16.5in wheels but i cant get them, i was wondering if it would be better to go to a 17in wheel or a 16in wheel.

 

Look around in you area for Military tires. I just bought a set of 37/12.50/16.5 Goodyear Wrangler MT Military OZ . Paid $150 each ,like brand new, still had the "****" on the sidewalls. They are off of the Humvee's. Some have almost no miles and are 8 or 10 ply with kevlar sidewalls. look awesome and ride nice. I have a 96 F250 XLT Supercab 3" lift and fit perfectly.