The 220RK is the smallest and lightest 5th wheel Grand Design RV has ever made and one of the smallest fifth wheels you will see on the road today. Most dealers here on RVtrader list the details incorrectly, so I will list them correctly. Most dealers list the freshwater tank as 52 gallons. This is wrong, it is actually 40 gallons. They also list the empty weight wrong, it is actually 6995 lbs. It only has a 2,000 cargo weight so fully (legally) loaded it weighs 8,995 lbs. This trailer and a few others are classified in as "Half-ton towable" but this is simply a marketing ploy and most experienced RV'ers recommend atleast a 3/4 ton to tow a 9,000 lb. trailer. I tow it with a 3/4 Superduty diesel which weighs almost as much as the trailer so it tows really well with zero sway even in high winds. Grand Design only sold about 300 of these trailers so they only produced them for 2 years, 2018 and 2019. 99% of them come with single-paned windows and the chaise couch which is terribly uncomfortable unless you're a tiny person. We ordered our 220RK in November of 2017. We custom ordered it with dual-paned windows and the optional "theatre seating" which is basically a triple recliner/couch with heat and massage and built-in cupholders. We also installed quite a few upgrades including solar, lithium batteries, a large inverter, a water softener, cell booster to name a few. We also changed out the Westlake "China bomb" tires and had a set of Goodyear Endurance tires installed. We have been traveling fulltime in this trailer (our home now) for the past 18 months and the only mechanical issue we've had is the water heater control board went bad, however Grand Design paid for a new one and we replaced the unit ourselves in about 5 minutes.
The 220RK is the perfect size for a couple with no kids or large pets. We purposely chose a trailer under 30 feet to ensure we could fit into all national and state parks and most RV parks and campgrounds. We have towed this trailer over 12,000 miles around the US several times over the past year and a half and have always been able to park it in any spot we wanted, while we watch other people with larger RVs get turned away or drive around in circles all day looking for a spot they can fit into. This trailer has a lot of storage and the tanks are basically heated since they are in the same area as the furnace. We dry camp a lot, this means out in the woods with no hookups, and we've camped in temps down to the single digits and have never had any problems with water lines or tanks freezing which like I said is due to the furnace being in the same area as the tanks and the water controls and valves. The only thing I would suggest if you buy one is replace the tires with Goodyear or Sailun (MUCH better quality than what it comes with) and upgrade the piece of junk TCL TV that comes in all the Grand Design trailers. We gave ours away to a park ranger that was super nice and we installed a Samsung 40" with a nice soundbar and subwoofer, which incidentally, fits perfectly behind the couch! Overall we've been very happy with this little fifth wheel and we would buy another Grand Design in the future.