Fleetwood Palisade 45DS vs Newmar Supreme Aire 4129
2026 Class A comparison · side-by-side specs, verdict, and who each is best for.
Quick verdict
The Fleetwood Palisade 45DS measures 44.67 ft against the Newmar Supreme Aire 4129 at 41.92 ft, a 2.8-foot gap that changes how each Class A parks and maneuvers in tight campgrounds. GVWR breaks 46,000 lb to 41,000 lb, giving Fleetwood Palisade 45DS 5,000 lb of additional rated capacity for cargo, water, and gear.
Freshwater capacity sits at 100 gal versus 150 gal, a 50-gallon edge to Newmar Supreme Aire 4129 for boondocking stretches between water fills. Sleeping count favors the Newmar Supreme Aire 4129, rated for 5 versus 4, which matters for families bringing extra kids or guests. Slide count sits at 3 on the Fleetwood Palisade 45DS and 4 on the Newmar Supreme Aire 4129, affecting how much open floor space each rig delivers at the campsite. On feature checklist, the Newmar Supreme Aire 4129 carries a four-season rating. The Fleetwood Palisade 45DS sits in the Class A Diesel subclass while the Newmar Supreme Aire 4129 targets Diesel Pusher, signaling distinct buyer intent within the Class A category.
Side-by-side specs
| Fleetwood Palisade 45DS | Newmar Supreme Aire 4129 | |
|---|---|---|
| MSRP | $706,848 | $702,852 |
| Length | 44'8" | 41'11" |
| Dry weight | — | 37,000 lbs |
| GVWR | 46,000 lbs | 41,000 lbs |
| Sleeps | 4 | 5 |
| Slides | 3 | 4 |
| Fresh tank | 100 gal | 150 gal |
| Grey tank | 75 gal | 85 gal |
| Black tank | 50 gal | 52 gal |
| LP | — | 0 gal |
| Solar | 100W | — |
| Inverter | 2800W | — |
| Generator | 10000W | 12500W |
| Bath | — | full |
| Bed | king | king |
| 4-season | No | Yes |
| Off-road | No | No |
| Outdoor kitchen | No | No |
| Washer/dryer | yes | prep |
| Residential fridge | Yes | Yes |
Where Fleetwood Palisade 45DS wins
- Longer floorplan at 44.67 ft vs 41.92 ft (2.8 ft more living space)
- GVWR rated 5,000 lb higher (46,000 vs 41,000 lb)
- 100W solar standard
- 2,800W inverter included
- Washer/dryer included
Where Newmar Supreme Aire 4129 wins
- Shorter 41.92-ft footprint vs 44.67 ft for easier parking
- Larger freshwater tank at 150 gal vs 100 gal
- Bigger grey tank (85 vs 75 gal)
- Sleeps 5 vs 4
- 4 slide-outs vs 3
Pick the Fleetwood Palisade 45DS if…
Choose the Fleetwood Palisade 45DS if a 44.7-ft long-stay layout matters more than maneuverability in tight spots, the higher 46,000 lb GVWR gives you headroom for water, gear, and tow loads, the 100W solar setup matters for extended off-grid stays without shore power, or an in-coach washer/dryer keeps long trips self-sufficient. At $706,848 MSRP, it slots in as a Class A for buyers who prioritize the spec differences above over the Newmar Supreme Aire 4129's alternative trade-offs. Empty-nesters, weekend warriors, and full-time travelers all evaluate this rig differently, so match the spec gaps to your actual annual usage pattern before signing.
Pick the Newmar Supreme Aire 4129 if…
Choose the Newmar Supreme Aire 4129 if you want a tighter 41.9-ft footprint for navigating compact state parks and city campgrounds, the 150-gal freshwater tank stretches your off-grid days before refilling, you regularly travel with 5 people aboard, the 12,500W onboard generator earns its keep at boondock sites, or four-season insulation is non-negotiable for shoulder-season and cold-weather trips. At $702,852 MSRP, it slots in as a Class A for buyers who prioritize the spec differences above over the Fleetwood Palisade 45DS's alternative trade-offs. Empty-nesters, weekend warriors, and full-time travelers all evaluate this rig differently, so match the spec gaps to your actual annual usage pattern before signing.
Frequently asked
How much longer is the Fleetwood Palisade 45DS than the Newmar Supreme Aire 4129?
The Fleetwood Palisade 45DS measures 44.67 ft against the Newmar Supreme Aire 4129's 41.92 ft, a difference of 2.8 ft that affects parking and turning radius in tighter campgrounds.
How many people does the Fleetwood Palisade 45DS sleep compared to the Newmar Supreme Aire 4129?
The Fleetwood Palisade 45DS sleeps 4 and the Newmar Supreme Aire 4129 sleeps 5. That makes the Newmar Supreme Aire 4129 better for larger groups.
What is the price difference between the Fleetwood Palisade 45DS and Newmar Supreme Aire 4129?
MSRP is $706,848 for the Fleetwood Palisade 45DS and $702,852 for the Newmar Supreme Aire 4129, leaving Newmar Supreme Aire 4129 $3,996 below Fleetwood Palisade 45DS. Dealer pricing typically lands several thousand below MSRP for both.