Itchyb is right you are looking at the 235 class wheels.
For traction rubber foam tyres are far better than traditional tyres only time id say it would the other way around is on dusty ,sandy surfaces where radial tyres work well.
casterracing EX-1 Pro, SP Silver Arrow
TOP Racing Scythe, SP 17.5, SP GT Pro 2.0
TOP Racing Scythe, SP 4.5 V2, Hobbywing Xerun 120SD 2.0
TOP Racing Scythe, SP 13.5, Hobbywing Xerun 120SD 2.0