Cost and performance are the primary considerations when choosing between steel and aluminum for an enclosed travel. Steel trailers generally cost less than aluminum trailers. While steel trailers weigh more than aluminum trailers, the exact weight difference depends on the brand and design of the trailer. Any increased weight can affect fuel efficiency and towing requirements. Aluminum is generally favored for its corrosion resistance but still requires regular maintenance and inspection for cracking. Steel is more resistant to cracking, and with modern paint innovations, it can achieve durability similar to aluminum’s.