2025 Grand Design Solitude 345GK vs 2024 Grand Design Solitude 375RES

Detailed Comparison

Before committing to the 2025 Grand Design Solitude 345GK or the 2024 Grand Design Solitude 375RES, it pays to understand exactly where each one shines and where it falls short.

Dimensionally, you're looking at 37.0 ft for the Grand Design Solitude 345GK and 31.5 ft for the Grand Design Solitude 375RES. The Grand Design Solitude 375RES carries an extra 4,700 lbs, which affects tow vehicle requirements and fuel economy.

The Grand Design Solitude 345GK sleeps 4 while the Grand Design Solitude 375RES accommodates 7. Slide-outs play a role in livability: the Grand Design Solitude 345GK has 1 and the Grand Design Solitude 375RES has 4.

For boondocking enthusiasts, tank sizes matter. Fresh water capacity goes to the Grand Design Solitude 375RES at 71 gallons versus 56 gallons. Solar-wise, you get 200W on the Grand Design Solitude 345GK and 550W on the Grand Design Solitude 375RES. Battery banks are 150 Ah and 250 Ah.

At $162,000 MSRP for the Grand Design Solitude 345GK and $143,000 for the Grand Design Solitude 375RES, the Grand Design Solitude 375RES saves you $19,000. With only a 13% price difference, the choice comes down to features rather than cost.

If you're traveling with a family, look for the model with more sleeping positions and better storage. Boondockers: look at the fresh water capacity and solar/battery systems — they determine how long you can stay out. For the full-time RV lifestyle, every gallon of tank capacity and every inch of counter space counts.

Remember, the perfect RV is the one you'll actually use. Pick the one that excites you most and hit the road.