Je vous mets ici un article intéressant sur le 303 xplr, notamment ce passage intitulé "Perils of the pioneer"
Close up of gravel bike tyreLizzie Crabb
However, it isn’t just the rim walls that the design puts into the firing line, but tyre sidewalls too. The aerofoil shape may help smooth airflow, but creating a more traditional lightbulb cross-section with narrower rims and bigger tyres means the tyre tread shields the sidewalls much more effectively. It's one reason why mountain bike rims aren’t this wide.
Another is that rim walls being this far apart increases the chances of the force of square-edge hits being taken all on one side, rather than spread across both, making pinch punctures far more likely even with the 303 XPLRs blunt, wide rim edges. This was borne out on my first ride: an off-centre rock strike at speed, tyre sidewall irreparably ripped on one side, tyre booted to limp home, new tyre required.
Reading the reports of other tech writers’ experiences with the wheels, this occurrence has been alarmingly common. Gravel is often similar to cross-country mountain bike conditions, and though this is an MTB-width rim with a tyre run at MTB pressures, the tyre is comparatively very narrow, so while it may suck up small bumps well, any truly rough or rocky ground blows straight through its volume and it’s only a matter of time before the tyre is done for.
Pour ceux que ça intéresse l’article complet ici
https://www.cyclist.co.uk/reviews/zipp- ... els-review