Many of the Mobile Suite owners have used Scott at trailertiresandwheels.com including me to upgrade from the 16's to 17.5's. Most folks sold off the original wheels and tires to help defer some of the costs of the new tires and wheels. They either set the old set out in front of the trailer while in a rv park with a sign or used Craig's list, but they sold easily. I did not change the studs but had Scott send me wheels that would fit.
The 'G' tires are able to support 3750 lbs and the H tires 4805 lbs. Many of the trailers were carrying almost the 3750 or close to it on the street side tires, as that is the heavy side of the trailer. Gaining some extra cushion in the load range is helpful. Also I only purchased 4 new tires keeping my 16 inch spare as a spare.
