Extreme Tyres VR2 265/35 R18 93W NK-Series

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Recommended tire pressure

Extreme tires generally require a higher operating temperature than comparable tires of other brands. The tire pressure should never be below 1.80 bar, regardless of the size and type of vehicle. Failure to comply with this requirement may result in damage to the tire construction and dangerous situations, including accidents.

Cars with front-wheel drive (FWD)

these are by far the most difficult vehicles for tires. The combination of cornering, braking and accelerating with only the front wheels and the higher weight of the front part of the vehicle create a very difficult environment for the tires. Also, the suspension design of FWD vehicles often limits the ability to achieve camber and other adjustments. All these factors mean that the pressure required to provide the tire with the correct working conditions may be even higher than indicated in the table above. In extreme cases, it may be necessary to apply pressures of up to 3.50 bar or higher. For front-wheel drive vehicles, it should also be noted that different pressures may be required between the front and rear axles. In most cases, a lower hot rear axle is used, but this depends on the specifics of the vehicle, the setup and the driver's preferences.

Vehicles with rear engine

it is very important that the rear tires are not smaller than those specified by the manufacturer. Due to the weight distribution, using smaller ones will lead to overheating and may damage the tires. It is also necessary that you The tire pressure must be approx. 0.20 bar higher for the rear tires than for those on the front axle.

Vehicles with aero packages

equipped with elements to increase downforce, higher “cold” pressures should be used. pressures should be used. The aero packages generate more downforce, which increases the load on the tires and can damage them if the pressure is not increased.

Autocross/short stages

for very short stages, it is recommended to start the first run with a pressure only 0.05-0.10 bar below the recommended “hot” pressure and check the gauge after each run. If the cabin remains hot on each subsequent run, it is advisable to start with the hot pressure.

Attention!

Due to the internal construction, the above table only applies to the VR1, VR2 and VR3 models. It does NOT apply to the VRC models, where a 10-20% lower tire pressure can be used when hot.

Tire pressure is one of the most important factors affecting both safety and tire performance. To ensure safe and trouble-free driving, it must be observed, checked frequently with approved pressure gauges and set to the correct values.

Failure to maintain the tire pressure recommended by Extreme may result in increased tire wear and damage to the internal structure, which may result in damage to the vehicle, accidents, injury or even death. Uneven wear can be an indication that the tire pressure is correct.

Excessive wear on the outer shoulder of the tire or even signs of wear on the sidewall indicate insufficient pressure.

Pressure that causes excessive load and deformation of the tire structure during cornering. In extreme cases, with heavy and powerful front-engined vehicles, the correct tire pressure in the front tires, which in most cases leads to deformation of the tire structure, is not sufficient.

In extreme cases, for heavy and powerful front-engined vehicles, the correct pressure in the front tires that protects the structure and creates acceptable conditions for the tire is not sufficient. that protects the structure and creates an acceptable environment for the tire can reach up to 3.50 bar. However, please bear in mind that these are only general recommendations and do not contradict the vehicle manufacturer's recommendations, i.e. if the manufacturer recommends an even higher pressure than indicated in the table above, then a higher pressure should be used.

Remember not to lower the pressure to the “cold” value after the session is finished. During the break, the tire temperature drops considerably, which also lowers the pressure. The pressure should be checked and adjusted as close as possible to the start of the next session/stage.