2025 Winnebago Solis 59PX vs 2024 Thor Rize 18G

Detailed Comparison

When it comes to the 2025 Winnebago Solis 59PX versus the 2024 Thor Rize 18G, the right choice depends on your travel style and priorities.

In terms of footprint, the Winnebago Solis 59PX stretches 21.5 ft while the Thor Rize 18G spans 18.5 ft. Weight-wise, the Winnebago Solis 59PX is the lighter rig at 5,700 lbs versus 6,400 lbs.

For sleeping arrangements, the Winnebago Solis 59PX offers room for 4 and the Thor Rize 18G can handle 2.

Looking at self-sufficiency, the Winnebago Solis 59PX packs 18 gal of fresh water and 350W of solar. The Thor Rize 18G counters with 30 gal fresh water and 400W solar.

Price is often the deciding factor. The Winnebago Solis 59PX starts at $171,000 MSRP, while the Thor Rize 18G commands $176,000 — a $5,000 gap.

Off-grid campers should pay close attention to solar wattage, battery capacity, and tank sizes. Weekend warriors will appreciate the easier towing and quicker setup of the lighter model. Solo travelers benefit from the compact footprint and lower operating costs of the smaller unit.

Both options have earned their place in the market. Your trip style and budget should be the final tiebreakers.

When it comes to water management, tank capacity plays a major role in how long you can stay off the grid. The 2024 Thor Rize 18G carries 30 gallons of fresh water versus 18 gallons in the 2025 Winnebago Solis 59PX, providing an extra 12 gallons for longer boondocking stays. Gray water capacity favors the 2024 Thor Rize 18G at 24 gallons versus 15 gallons, which directly affects how often you need to find a dump station. The 2024 Thor Rize 18G also leads in black water capacity with 11 gallons compared to 9 gallons, an important consideration for families or full-time travelers.

Electrical systems are increasingly important as RVers rely on more electronics and appliances. With 400W of solar, the 2024 Thor Rize 18G outpaces the 2025 Winnebago Solis 59PX's 350W setup, offering better energy independence away from hookups. Battery storage gives the edge to the 2025 Winnebago Solis 59PX with 450Ah versus 200Ah, translating to longer run times for lights, fans, and charging devices overnight. The 2024 Thor Rize 18G's 3000W inverter can handle heavier loads than the 1000W inverter in the other unit, which matters if you plan to run a microwave, coffee maker, or hair dryer without shore power.

For solo travelers and couples who value maneuverability, the 2024 Thor Rize 18G with its more compact footprint will be easier to navigate through tight campgrounds and mountain passes. Families with children should lean toward the 2025 Winnebago Solis 59PX, which sleeps up to 4 and provides more flexibility for overnight guests. Full-time RVers who spend extended periods off-grid will benefit most from the 2024 Thor Rize 18G's power setup and the 2024 Thor Rize 18G's water reserves, as these directly impact daily comfort and independence from hookups. Weekend warriors and seasonal campers who primarily stay at full-hookup campgrounds may find that the differences in tank sizes and power systems matter less, allowing them to focus on floor plan preference and overall comfort instead.

From a value perspective, the 2025 Winnebago Solis 59PX at $171,000 MSRP represents a $5,000 savings over the 2024 Thor Rize 18G at $176,000, a 3% price difference. Breaking it down per sleeping position, the 2025 Winnebago Solis 59PX costs roughly $42,750 per berth while the 2024 Thor Rize 18G comes in at $88,000 per berth. On a cost-per-foot basis, the 2025 Winnebago Solis 59PX runs about $7,953 per linear foot versus $9,514 for the 2024 Thor Rize 18G, which helps contextualize the value each unit delivers for its size. It is also worth considering that Winnebago and Thor have different dealer networks and warranty programs, which can significantly impact your long-term ownership experience and resale value down the road.