While the compressor takes approximately 3 minutes for a bar, but to fill each about 0.5 bar total for a winter to summer tires change the device is fine and will not really warm. One must note that the removable pressure-meter measures differences must first be electrically connected and only after the compressor is screwed onto the tire valve and not vice versa, because as a kitchen scale otherwise 0 bar or 0 grams appears when first screwed and thus to be measured tire pressure is applied or that is to be weighed already placed on the scale and then only then electrically switched. One must note the pressure value when switched compressor pump and about 0.05 bar more to build the pressure (smallest measurement accuracy), because that goes back about lost when unscrewing the compressor.
