@MavicZack or anyone else for that matter.....
Now regarding the tires.
The reasons for Wheel Tire Systems are several. First and foremost, over the course of testing many, many wheels (always with tires in place, as required), Mavic discovered significant variability in tire quality. Not just normal stuff like compound and casing, but precision of fitment, roundness, clincher bead stretch, and the like. Tolerance issues.
By adding tires to the system, Mavic can control tolerance on this critical aspect of the performance package. Not just grip and shape, but precision of fitment and tolerance for bead diameter, stretch, etc. These are important safety considerations, and Mavic wants to control for them in addition to fundamental performance criteria like weight, grip, puncture resistance and the like.
Aerodynamics were first in the formula for wheels with the CX01 technology (including CXR 80 and more to come ..). With R-Sys and the others, grip and weight were weighted more significantly in the design. The tires on the 2013 WTS wheels mount fairly narrow, so I bet they test better but any gain would be marginal.
Now that I wrote a dang book, please hit me back with questions, comments, or anything else. in public or PM. I'm getting a thicker skin so I won't take criticism personally.
So, by implication, all mavic wheels including Ksyrium Elites / SLS and the like (for those of us on smaller budgets!) will run better with Mavic tyres.
Or am I over-interpreting?
Would like to know before I get some new tyres for this season.....