2025 Thor Rize 18M vs 2024 Thor Rize 18G

Detailed Comparison

Choosing between the 2025 Thor Rize 18M and the 2024 Thor Rize 18G? Both are excellent options in the RV world, but they cater to different priorities.

Dimensionally, you're looking at 19.0 ft for the Thor Rize 18M and 18.5 ft for the Thor Rize 18G. They're remarkably close in weight, both hovering around 6,500 lbs.

For sleeping arrangements, the Thor Rize 18M offers room for 3 and the Thor Rize 18G can handle 2.

Looking at self-sufficiency, the Thor Rize 18M packs 19 gal of fresh water and 250W of solar. The Thor Rize 18G counters with 30 gal fresh water and 400W solar.

Price is often the deciding factor. The Thor Rize 18M starts at $170,000 MSRP, while the Thor Rize 18G commands $176,000 — a $6,000 gap.

Couples who value intimacy and easy handling should lean toward the more compact option. 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.

Whichever you choose, you'll be getting a capable rig. Just make sure to inspect one in person before signing.

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 19 gallons in the 2025 Thor Rize 18M, providing an extra 11 gallons for longer boondocking stays. Gray water capacity favors the 2024 Thor Rize 18G at 24 gallons versus 13 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 5 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 Thor Rize 18M's 250W setup, offering better energy independence away from hookups. Battery storage gives the edge to the 2025 Thor Rize 18M with 350Ah 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 1500W 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 Thor Rize 18M, which sleeps up to 3 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 Thor Rize 18M at $170,000 MSRP represents a $6,000 savings over the 2024 Thor Rize 18G at $176,000, a 4% price difference. Breaking it down per sleeping position, the 2025 Thor Rize 18M costs roughly $56,667 per berth while the 2024 Thor Rize 18G comes in at $88,000 per berth. On a cost-per-foot basis, the 2025 Thor Rize 18M runs about $8,947 per linear foot versus $9,514 for the 2024 Thor Rize 18G, which helps contextualize the value each unit delivers for its size. Since both models come from Thor, buyers can expect consistent build quality, a shared dealer network, and comparable warranty coverage, which simplifies the after-purchase ownership experience.