2021 Newmar Supreme Aire 4573, At just over 6,400 miles, this Supreme Aire has barely been used and with an original MSRP north of $574,000, it's one of the most capable Super C coaches on our lot. The 4573 is a full 44.9 feet with three slideouts, giving it a living space that genuinely feels residential rather than just "spacious for an RV." Newmar's reputation for interior fit and finish shows here the cabinetry, surfaces, and overall execution are a cut above what you'll find in most Class C builds. The **three-slide** layout opens up the main living area dramatically, and the **full bath** is sized to match the rest of the coach. As a Super C, it pairs the structural strength and towing capacity of a heavy-duty truck chassis with Newmar's luxury interior a combination that makes long-haul travel genuinely comfortable rather than just functional. At this mileage, it's essentially a new coach at a significant step down from new-coach pricing.