Good morning, about a year ago I joined the road bike and I discovered a complex world.

I want to change wheels, currently I have the Mavic Aksium, but I'm undecided between low-profile wheels (type R-SYS SLR) or medium/high profile. Beyond the hill performance and/or plain, what interests me most is the behaviour on windy days. I read that the effect of wind on the wheel and consequently on the bike, depends more on the shape of the spoke (flat or round) that the profile of the wheel. In this regard, as well as any advice on wheels with a maximum price around 1,500 Euro or so, I would like an opinion on this topic.

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The sensitivity of a wheel to side wind depends on several factors. The technical development in the field has led to significant progress and now the crosswind may even be favorable for optimal performance. In general the height of the rim and especially its conformation are the main element, follows the shape of the hub and the flange, then the length of the spokes and their arrangement, then their conformation. Up to a height rim of about 35 mm, the cross-wind does not disturb and major problems. So if you do not want to exceed this height, wheels like the Mavic R-SYS SLR, are more than excellent. Above this height you get to see the difference between those who invest in research and who is not ... Great wheels are Mavic CXR as 80, which under certain conditions are benefited by the crosswind. Equally good are the Campagnolo Bullet and Fulcrum Red Wind. DT Swiss Dicut still valid and the new Zipp 202, all-wheel resent that little or nothing of the crosswind. But they are also all-wheel where the rim has been carefully studied, not only in its height, but in its surface, and each wheel is a special case, with its technical solutions, with the pros and cons. The size of the spokes affect, but now have developed flat spokes, which have little or no influence on the behaviour of the wheel with the crosswind. This in contrast to the past where large spokes led to excellent aerodynamic performance, but also an unsatisfactory behaviour in the presence of crosswinds. A wheel also can not be chosen without analyzing the characteristics of the frame where it will be adopted and without an analysis of the characteristics of the athlete that is going to use it. Going back to your question, if you are looking for a good wheel climbs and hilly, rigid and lightweight Mavic R-SYS SLR are more than excellent and do not have equal alternatives, given their technical solutions are not affected by crosswinds extent greater than other products. Obviously they have no outstanding aerodynamics, but wheels are specific to climb uphill and aerodynamics does not count. Remaining between the average profiles, though out of his budget, there are the Zipp 202 and the DT Swiss Dicut 32T and Spline RC38T, the latter two for tubolars.