Kart Tires Pressure - Technical and Solutions to get the most out of your kart in practice and race


Kart Tires Pressure - Technical and Solutions to obtain the best pressure of the tires of your kart
Riuscire To be able to obtain the best performance from the tires is fundmental to be winner in all the categories of the motorsport, and the kart in this doesn't exception!

The aspects that affect the performance of the kart tire are pressure and temperature.

The pressure in fact affects the footprint that the tire offers depending from the load to which it is subject, while the temperature affects the level of adhesion that the tire compound generates on the ground.

The temperature that the tire reaches depends from the loads to which it is subjected, from the grip that the tire itself is able to supply, and from the air and ground temperatures, therefore on a certain track with certain atmospheric and grip conditions, the level of the temperature that each wheel reaches is consequently determined.

Acting on the setup of the chassis of the kart however you can change, even if slightly, the loads acting on the wheels, and also sli angle and slip ratio of the tire, so to work on the setup of the kart is the only way to change the temperatures that the tires reach.

However in kart the compounds used are not as sensitive to temperatures as it happens for the tires of other categories of motorsport (formula 1, motogp, etc.), therefore the window of temperatures with which the kart tire offers a good level of grip is enough wide, so the temperatures that the tire reaches are not so important for maximum adhesion.

The pressure of the kart tire, on the other hand, is obviously linked to the cold inflation pressure of the tire, and then increases during the laps in function of the tire temperature.

On the pressure of the kart tire you can therefore intervene directly by modifying the initial inflation pressure, so let's understand on what bases its value should be defined to get the maximum efficiency of the tire lap after lap.


As we have seen, the pressure influences the tire footprint in function to the load on the wheel, so the value of the pressure that must be used is primarily linked to the weight of the kart, to its balancing, and to the load transfer that there is under braking, acceleration and corner.

So depending on the characteristics of the kart, of the track and of the ground conditions, on each wheel, at each point of the track, there will be a different load, so ideally the pressure should change continuously to allow the tire to always have the maximum performance, of course this it is not possible, but it is possible to identify the pressure that each tire must have in relation to the average load acting on each wheel during the lap, and which consequently guarantees averagely the maximum footprint and grip at each point of the track.

It is therefore clear that for each track, and for each grip condition, it is necessary to use different pressures to get the maximum performance from the tire, but the discussion does not end here, so far we have talked about the cold pressures that allows the maximum performance of the tire in function of the loads to which it is subjected, but lap by lap the pressures change due to the increase in temperature of each wheel, so the situation that was initially optimal is modified, and therefore this aspect must also be taken into account.

For example, in the kart world in a completely empirical way the mechanics to compensate the increase of temperature and therefore of pressure are used to keep at a lower pressure the tires that at the end of the run have recorded a higher temperature, but this allows to take account only of a part of the problem, in fact if the tires have a higher temperature is also because they are more loaded, then instead to be deflated, they should be more inflated to offer the maximum footprint on the ground, so the result is that for all the first laps the tire works badly, and only after that the temperature increasing has returned the pressure to the right values, the tire begin work properly.

As you can see the variables involved are many, and often they are in opposition, therefore to work only with the experience, or to use more or less correct empirical methods, it is not sufficient to find the optimal pressures to be used in the differents situations, but it is necessary to take advantage of the help of tools and software that allow to find the optimal compromise each time not only in function of the characteristics of the track, and of the atmospheric and ground conditions, but also in relation to the number of laps that you must carry out.

Continuing the reading you can start thinking of putting a important step for the growth technique of your team and of your job.

Solution to have the best tire pressure of your kart on qualify and on race

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Kart Tires Pressure - Technical and Solutions to obtain the best pressure of the tires of your kart