I initially thought the tow mirrors would be required for most towing needs but as it turns out my Limited power mirrors are just fine. The power-retract feature has saved me several times, including once when I went through a drive-in touchless carwash. The spray mechanism moves back and forth over your entire vehicle and even with my non-tow mirrors the Tundra was too wide and the mechanism would have hit my mirrors on both sides. Luckily I spotted the problem and punched the retract button quickly before the mirrors were dinged up. Which brings up the question: what happens if your mirrors are hit while they are extended? Does it break the power retract feature or are they designed to be manually moved as well?