We've only towed flatbed trailers with our '96 Tacoma (4x4, 3.4L V6). I still haven't acquired an enclosed 7x16 V-nose trailer yet, so I don't know how well the Tacoma would handle it.

I just bought some slightly narrower (.78") and taller (1.0") tires (Goodyear 245/75x16 vs. the stock Bridgestone 265/70x16) for our Tundra 4x4, 4.7L V8) and noticed an increase of 3MPG so far. That's 78 more miles per tank full

I'm thinking about changing the R&P ratio in the Tundra's diffs to obtain a little bit more fuel economy, but want to retain most of the towing capacity. Stock is 7100# ... 2100# more than the Tacoma.