Aesthetic and technical considerations do not always go hand in hand. Something that is well exemplified by a fashion that has shaken road cycling (and gravel, by extension) in recent years. One in which, often, the choices made do not match the real needs of cyclists. We're talking about road profile wheels, and we're going to explain the advantages and disadvantages of each type, as well as which ones are better in each case.
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The first thing you should know is that the industry differentiates between 3 types of wheels according to the depth of the rim: high, medium and low profile, and what we call 'profile' wheels are usually included in the first two groups. However, sometimes, instead of being the rim itself that gives the measurement, it is a kind of casing that acts as an extension of the rim.
The truth is that there is some confusion about where to draw the line between them (and it seems that the numbers are growing over time, because the high profile is getting higher and higher), but here we will try to give you the tools to identify them correctly and know what each one is good for. The things to take into account? In addition to other more secondary things, two main ones: aerodynamics vs. weight.
Also known as aero, these are the ones that triathlon and time trial bikes usually have on the front or both. And, increasingly, all kinds of road and even gravel frames (see above), because many riders choose them more for purely aesthetic reasons. It's true that they will make you stand out in your group, and that they are the fastest on flat terrain because their profile gives them better aerodynamics. But they are also heavier, so they are harder to climb with, and tend to cause more problems. Despite their recent commercial success, they are, after all, a rather specialised type of wheel.
Somewhere between classic and trendy, they are probably a good match, which is why manufacturers are offering more and more products in this category. They retain some of the aerodynamics of their predecessors, but don't add as much weight as they do. If you do a lot of kilometres on the flat, they might make sense for you; and the visual effect, without being as pronounced, is still very attractive. Let's say they have the best of both worlds, but if your terrain is hilly, with a lot of elevation gain, we don't recommend them either.
The 'all-time' ones. And, frankly, they are still the most suitable for the majority of cyclists, who are not very specialised, because they allow you to tackle routes with quite a few kilometres of elevation. In fact, in mountain biking there is practically no other option. In addition, they will usually save you not only weight, but also a few euros on your bill. Admittedly, if you live in an eminently flat area, you may have to spend a few more watts than your companions to keep up with them, and your photos won't be as impressive...
As is often the case with such discussions, there is no absolute answer that fits everyone. The best ones for you will depend on the type of cycling you do. If you want a compromise, more and more people and brands are opting for medium profiles, although the smartest choice for most is probably still a low profile.
While their impact on riding is not significant, there are fundamental differences between low-profile and high-profile rims. Low-profile rims are those with a rim depth less than 30mm; high-profile rims span more than 50mm. This height variation directly influences aerodynamic performance in addition to the weight of the wheels. Low-profile rims are lighter and perfect for climbing and acceleration; high-profile rims are better suited for high-speed cruising since they offer an aerodynamic advantage. Consequently, choosing the appropriate tools depends on knowing the variations between these two forms.
Low-profile rims' lightweight construction is their most obvious benefit; it provides a big edge for acceleration and climbing. Low-profile rims are surely the finest option if you enjoy mountain biking or need frequent starts and acceleration. Because of their modest weight, cyclists may more easily negotiate steep slopes without burning too much effort from heavy wheels. Low-profile rims are also far more steady in crosswinds. Their decreased surface area to the wind results from their lower rim depth, which lessens the likelihood of riders being blown off course, therefore improving safety—an especially important consideration for cyclists riding in challenging weather.
However, low-profile rims perform less well during high-speed cruising. They cannot offer ideal aerodynamic performance at high speeds because of the reduced rim depth. Thus, riders must exert more force to overcome air resistance, especially on flat routes for extended periods, if they intend to maintain high speeds. Under such conditions, the drawbacks of low-profile rims become clearer. Therefore, if you are a rider who prioritizes speed or if your primary riding routes are predominantly flat, low-profile rims may not be the optimal choice.
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On the other hand, prominent rims present a somewhat different picture. Usually exceeding 50mm, their rim depth provides excellent aerodynamic qualities for high-speed rides on flat terrain. For people who like riding rapidly on level roads, prominent rims are definitely a desirable option. The greater rim depth slashes through the air, therefore lowering drag and enabling you to retain more efficiency at speed. Long-distance flat rides highlight this aerodynamic benefit well. High-profile rims aim to conserve energy during extended rides, thereby facilitating faster speeds and a more stable riding experience.
High-profile rims undoubtedly come with certain drawbacks. First of all, they are heavier, which may cause some strain during climbing. When riding on steep hills or requiring fast acceleration, the additional weight can pose a significant challenge. Moreover, in strong winds, high-profile rims perform less stably than low-profile rims. Their higher surface area in crosswinds results from their height; hence, in windy situations, riders may have to work more to keep stability—an inevitable energy waste.
Ineos Grenadiers rider Michał Kwiatkowski effectively won Stage 13 of the Tour de France with Shimano Dura-Ace C50 high-profile tires. This example clearly demonstrates the significant advantage of prominent rims in high-speed situations. High-profile rims' aerodynamic design obviously helps riders conserve significant energy in races requiring extended stretches of high-speed riding so they may surge ahead at crucial points to win. This is the reason we frequently find riders using high-profile rims for flat and high-speed stages at professional competitions.
How do you decide which rims the typical rider should use? It absolutely relies on your riding requirements. Low-profile rims may be more appropriate if you enjoy gravel bike-style riding; for road bike riders, high-profile rims are more beneficial. Furthermore, if you want custom bike paint, choosing appropriate rims and matching them with a customized paint job can help accentuate the originality of your bike. If you enjoy climbing or your paths usually traverse mountainous terrain, the low-profile rims' lightweight advantage fits better. Their lightweight design lowers energy use and makes climbing simpler. Conversely, if you prefer riding fast on level roads or taking part in triathlons, high-profile rims will help you keep speed more precisely over extended distances. The decision ultimately comes down to your riding technique, the kind of competition, and your own practices. You are the only one who truly understands your objectives, whether your priorities are speed or simply enjoying the journey.
The present market can be a bit bewildering with so many options for both low-profile and high-profile rims. Using the Pie series from ICAN Cycling as an example, they offer several choices in internal width and rim depth to fit varied riding requirements. For individuals requiring a 21mm internal width, their 38/52 Pie Carbon Spoke 21mm rims are especially appropriate since they provide superior stability when cornering and excellent control in difficult road conditions. For riders who choose larger rims, the 36/50 Pie Carbon Spoke 23mm wheels are perfect since they provide more comfort and traction, particularly on uneven ground.
The performance of the rims will directly affect your riding experience regardless of your preferred low-profile or high-profile rims. Many of the riders base their decisions on their riding style and particular requirements. While some individuals want high-profile rims for their efficiency at high speeds, others want lightweight, low-profile rims as they make climbing simpler. The rims you choose immediately impact your riding style and general experience in addition to your performance on various terrain.
Experienced motorcyclists often own multiple sets of rims to cater to various riding purposes. During daily training, low-profile rims may be more frequent since they provide better control and stability; during races, riders might prefer high-profile rims to maximize their aerodynamic qualities and improve speed. Selecting a set of all-around rims suitable for both climbs and flat roads could be a more sensible choice for budget riders.
36/50 Pie Carbon Spoke 23mm
Apart from rim depth, a major determinant of the riding experience is rim material. Today's most high-performance rims are predominantly made from carbon fibre. Carbon fibre rims are lighter and more robust than aluminium rims, so they more directly and efficiently transfer the rider's power. For riders with higher performance expectations, carbon fibre rims may be more expensive than aluminium rims, but they offer a superior fit. Should you be a novice biker, aluminium rims' affordability could be the best fit for you.
Whatever kind of rims you go upon, the correct tools will greatly improve your riding performance. Both low-profile and high-profile rims have special benefits and uses; the decision calls for careful thought of your riding conditions, surroundings, and physical state. Everyone's riding goals and techniques are unique; hence, the rims that fit you will make the largest difference in your ride experience.
38/52 Pie Carbon Spoke 21mm
Those who require lightweight and agile handling, especially during frequent acceleration and climbing, should opt for low-profile rims. Conversely, for cyclists looking for speed, high-profile rims are excellent; they shine on flat ground and high-speed cruising. Choosing rims should be based on your riding style and specific needs, as this will help you find the right tool that will lighten, accelerate, and enhance your enjoyment of every ride.
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