he has the data points to go back to back to back between DFS / XM / Zen. and possibly memory compare to his former CRW's too.
All very different wheels for different scenarios.
The DFS wheels are my full-on aero set — 60/65mm — and they’ve been great for holding speed and general road feel. In gusty winds (up to 25mph), the front gets a bit twitchy, which is expected at that depth. They handle it reasonably well, but the sidewinds are definitely noticeable.
The XM CarbonSpeed wheels (50/60mm) are more of an all-rounder. They arrived yesterday, and I took them straight out for a 100km ride — around 50km of that was in a chain gang averaging 37.8kph. Not exactly a scientific test, but they definitely felt rapid.
What really stood out was the ride quality — stiff, responsive, and solid under load. They also have a noticeably more premium feel and finish compared to the DFS wheels although both Matte UD Paintless the DFS are shinier and the XMs are more matte.
The build quality just feels that bit more refined and premium on the XMs
CRW rate their wheels to 100kg, while the XM CarbonSpeed set is rated to 120kg — that extra stiffness is noticeable when putting down power. The 24mm internal width on the rear (vs 21mm on the CRWs) adds comfort too.
Overall, really impressed — stable in the wind, fast, and a very nicely put-together wheelset.
Will be interesting like I said to see how the Zens shallower wheel performs