Since the appearance of the first mountain bikes until a few years ago, all mountain bikers have used a unique diameter of wheels MTB: the 26”. With this wheel diameter, and for nearly 30 years, lots of bikers to achieve many goals.
But since a few years ago they have been appearing new standards of mtb, increasing the diameter of these and adapt, every one, to different uses or disciplines complicated the difficult question of How to choose your mtb wheels. The emergence of these new measures of MTB wheels and different advertising campaigns of the trademarks of the sector, enhance the use of these to the detriment of the 26 “classic.
We can say that new wheel 27.5 “and 29”, including its variants plus, represent a step forward and an improvement of the performance of current bikes. Taking into account these aspects in new MTB wheels diameters are different?
Wheels Mtb 26″
Bicycles with wheels of 26″ characterized by a larger Accelerator, i.e., offer little resistance to acceleration from rest.
In the same way, the smaller size facilitates us maneuvers and agility at the time deal with technical descents with turns closed and where the response time is minimal.
Commit4fitness finds that this kind of wheels have greater difficulty to overcome obstacles and less ability to Tumbleweed.
Wheels Mtb 27, 5″
They are the most versatile wheel, as we are located between agility, acceleration and maneuverability of the 26″ and Tumbleweed ability of the 29″.
Las 27, 5″ substantially improve traction and overcoming obstacles to the 26″. If we compare them to the 29″, shown more manageable, fun and light. In prolonged ascents are faster.
In terms of inertia, once we started with our bike, the wheels 27, 5″ has more difficulty to maintain speed.
Wheels Mtb 29″
Is very rodadoras bicycle which, although since the rest is harder the snatch, since they have less ability to accelerate, when we reach a certain speed it allows us to keep it more easily.
On the other hand, the larger wheel makes obstacles easier, allowing us to have greater traction (sensation of floating when we overcome streams, small cracks…), better absorbing vibrations and imperfections of the terrain, this makes it does not penalise excessively when we were in the Loft.
Variants Plus: Wheel 27.5 + And 29 Wheels+
These two new wheel diameters have, since a couple of years, its variants plus: 27, 5″+ and the 29″+. These new measures have led to the need to adapt the geometry of frames and forks, making them more resistant to accommodate thicker wheels and needing a modification of bushings and shafts of the wheels, it is necessary to have a more lateral rigidity and wide.
In the case of the 29″ + (also known as mini fatbike) they are intended for a very specific user type and, for now, are not available in most catalogs.
The advantages offered by these two new sizes is greater traction on the ground,offering the possibility of enjoying more on bike, provided our goal is not competitive. It must be borne in mind that, aside from a higher weight, using thicker wheels with lower pressures, causes a greater burden, i.e., need a higher energy expenditure to be able to move.
It must be said that overall diameter reaching a 27 wheel, 5″+is equal or very similar to the of a 29″ wheel, the only difference is that having more balloon, traction is larger.
What MTB Wheels Choose?
Depending on the discipline that you practice you orientate on MTB wheels are best suited:
Wheels MTB 26″: All mountain, free style, free ride, Enduro, All Mountain, DH / Downhill / descent.
Wheels MTB 27, 5″: Enduro, XC, All Mountain, DH / Downhill / descent.
Wheels MTB 29″: Marathon, XC, Rally.
Wheels MTB 27. 5″+and 29″+: All Mountain, trail.