2025 Forest River XLR Nitro 35DK5 vs 2024 Keystone Carbon 338

Detailed Comparison

The 2025 Forest River XLR Nitro 35DK5 and 2024 Keystone Carbon 338 represent two compelling choices for RV enthusiasts. Let's break down what sets them apart.

The Forest River XLR Nitro 35DK5 measures 39.0 ft in length at 15,800 lbs, compared to the Keystone Carbon 338's 28.0 ft and 15,300 lbs. GVWR ratings sit at 18,200 lbs and 19,800 lbs respectively.

Capacity-wise, expect to sleep 4 in the Forest River XLR Nitro 35DK5 versus 10 in the Keystone Carbon 338. With 0 and 2 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Forest River XLR Nitro 35DK5 carries 96 gal of fresh water, 42 gal gray, and 41 gal black. The Keystone Carbon 338 offers 59 gal fresh, 64 gal gray, and 36 gal black. The Forest River XLR Nitro 35DK5 has the edge for extended dry camping.

Budget-wise, the Forest River XLR Nitro 35DK5 is listed at $70,000 compared to $74,000 for the Keystone Carbon 338.

For family camping trips, the larger floor plan and additional berths make a real difference. For boondocking, the model with superior solar and battery setup will keep you comfortable off the grid longer. If you're going full-time, the larger tanks and more robust build quality matter enormously.

No comparison can replace walking through each unit yourself. Visit a dealer and experience the layouts firsthand.