2024 Keystone Montana 3231CK vs 2025 Keystone Montana 3531RE

Detailed Comparison

Shopping for an RV and torn between the 2024 Keystone Montana 3231CK and the 2025 Keystone Montana 3531RE? We've put together a detailed spec comparison to help you decide.

The Keystone Montana 3231CK measures 36.0 ft in length at 8,100 lbs, compared to the Keystone Montana 3531RE's 35.5 ft and 12,700 lbs. GVWR ratings sit at 10,600 lbs and 16,100 lbs respectively.

Capacity-wise, expect to sleep 9 in the Keystone Montana 3231CK versus 6 in the Keystone Montana 3531RE. With 2 and 3 slide-outs respectively, the parked floor plans differ significantly.

Tank capacities are a key off-grid consideration. The Keystone Montana 3231CK carries 76 gal of fresh water, 47 gal gray, and 35 gal black. The Keystone Montana 3531RE offers 96 gal fresh, 75 gal gray, and 41 gal black. The Keystone Montana 3531RE has the edge for extended dry camping.

Budget-wise, the Keystone Montana 3531RE is listed at $165,000 compared to $165,000 for the Keystone Montana 3231CK.

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.