Hi, very good questions indeed. We like to be challenged with technical questions as we see a real interest in bike industry innovations. The speed of 45 km/h in the wind tunnel is where we usually test and we are trying to make results comparable within a test session and over different sessions and categories. With gravel cycling getting popular, we also went down with the speeds to 30 km/h, that´s the minimum you are able to measure reliable results. With the experience of lower speeds in reality, we made also measurements with the WTS in these speeds. There, we figured out that the combination of apparent wind direction and riding speed not only led to more extreme yaw-angles but that the AERO 111 increased the sailing effect at this speed. Thus, the tire increases the aero performance significantly if you are riding in the flat with e.g. strong cross winds. In contrast to this, increasing speeds and cross winds reduce the yaw-angle and the system is stronger affected by the base drag (within -10° to +10° Yaw). The calculation of yaw-angles is a vector calculation and you will find examples in the internet to make your personal calculation. Therefore, your mentioned speed and wind conditions lead to well-known results in terms of aerodynamic and handling properties. One important take away from the tire for high speed riding is a stable and foreseeable steering behavior - especially in these downhills you can ride with confidence without being surprised. Best, Ralf - DT Swiss

2nd question replied separately: The tire widths of 26 and 29 mm are according the latest ISO norm and related to the rim innerwidth. The widest/still safe tire/rim combination for 26 mm AERO 111 is 22 mm (ERC/ER/E wheels), with the AERO 111 in 29 mm, the maximum allowance for a safe fit is 24 mm (up to GRC/GR/G wheels). We must admit that the AERO 111 tires have been developed to work with our wheels/rims, therefore we cannot comment on other wheels (or external rim width) of other wheels/brands. In general, the less wide the tire the better are the aerodynamics of the WTS. You will get excellent results when combining 26 mm with our ARC wheels, combining the same tire width with the ERC wheels might lead to even better aerodynamics in this category. On the other hand, the designated plus in comfort for rougher road surfaces will be sacrificed. Putting a wider 29 mm AERO 111 on the ARC wheels might enhance the steering performance and the comfort but on the other hand the weighted aero gains of the ideal 26 mm tire will be decreased. Our wheel manual will guide you through best tire/rim combinations. But please respect also the max. tire pressures for tires and rims. If these tire pressures do not match 100 %, the "lowest" maximum tire pressure of one of the components has to be respected (see hookless rims)! Best, Ralf - DT Swiss

@@dtswiss Ralf thank you so much for such detailed answers.

Hi, thanks for your question. You will achieve the best aero performance if you install the 26 mm wide tire. Up to internal 22 mm rim width, you are able to run safe on 26 mm AERO 111 tires in the front. However, if you use the AERO 111 in 29 mm, a characteristic like comfort can be improved (by a lower tire pressure), but the aero performance will be decreased. In general, a wider external rim will contribute positively to the aerodynamics of a front wheel. Best, Ralf - DT Swiss

Hello and thank you for your question. The second bike is a prototype from Lean Cycles. Best regards, Arnaud, DT Swiss

Hi, the wheels are ready for the installation with a Thru Axle, which is supplied by the bike manufacturer. If you want to convert the wheels to QR, this endcap kit is not included and will need to be purchased separately. For the right parts number of GR 1600 SPLINE, just access to our support tool and select the wheel to arrive at various conversion options, incl. those for QR 5/100 mm and 5/135 mm, e.g. www.dtswiss.com/en/support/product-support?matnr=WGR1600NIDISO21281. Best, Ralf - DT Swiss

Hi and thank you for your message. You're right that a bearing press would be the perfect tool, which we use when we have a single hub to do a rebuild. With a complete wheel, it is hard to find such a big press to get the job done🤔 As well as in general most of the people doing service on their bicycles do not own a bearing press. Enjoy wrenching on your Bicycle, Friso "DT Swiss".

L’équipe AG2R est très contente du pneu et l’utilise sur la plupart des courses depuis le Tour de France 2024. Ben O Connor prend d’ailleurs la seconde place au championnat du monde de Zurich sur ces pneus. Attention, le 111 ne se monte qu’à l’avant, là où il permet un gain aérodynamique. Il est adapté à beaucoup d’utilisations, dont le Triathlon, offrant un gain de watts à vitesse équivalente et plus de stabilité au pilotage dans les zones techniques ou venteuses. À noter aussi que plus la jante est basse, plus le gain aéro est important. Il est donc particulièrement adapté pour ceux qui veulent bénéficier des avantages d’une jante basse en montée, sans faire une croix sur l’aérodynamique dans les zones plus plates et les descentes. C’est pourquoi il est souvent combiné avec nos ARC 38mm. En espèrent avoir pu vous donner toutes les informations dont vous aviez besoin, bonne journée, Pour en savoir plus : www.dtswiss.com/en/innovations/a-perfected-storm

Hi and thank you for your message. We never used any plastic in our hubs. One exception is the hubshell seal, which is made our of rubber😇 Enjoy riding the trails, Friso "DT Swiss".

@@dtswiss I just order my 350 today. I hesitated with hope pro 5. what made my choise is that the 350 has less small parts, the hub is easier to open for service, and less noise too :p