I use Cateez wheels for our Hobies and have three sets.
I have replaced my old orange Roleez wheels with 4 grey 42 cm wheeleez wheels on my first Cateez.(WZ1-42UC)
These are 1" (25 cm) with 176 lbs carrying capacity. I use this set for my Hobie 20 and my son's 14 at regattas and
used them at the Round TI regatta last weekend in Alameda, CA.
http://www.wheeleez.com/beach-wheel-specs.phpI have a newer second Cateez for my Hobie 18 in Santa Cruz that uses only 2 of the 49 cm wheels.
I have an older 4 wheel third Cateez that I bought used from Rafi that I have up at Calling Lake Alberta
This third set had smaller orange tires that what I had on my first set.
I have put the larger older orange tires on this set (which seem to be close to the grey 42 cm)
Bottom line, I would go for four 42cm grey tires
- Dwight