News On 13 Rims
When it comes to wheels one can find lots of technical terms that he didn’t even know he must be aware of. For example, the balance factor also known as OS or “offset” is a very important dimension and specification always engraved on 13 rims. Unlike other parameters such as distance between dowel pins or the rim diameter, the balance factor is lesser known and taken into consideration. But it might be the most important factor in choosing a new set of wheels. The balance factor influences the fact how a wheel looks like encased at a car. Also it influences how much it infiltrates behind the wheel and if the tire will touch or not the car body and suspensions.
The balance factor is measured between the central imaginary line which crosses the 13 rims on the lateral through the middle and the mounting surface of the 13 rims where there is a contact with the axle pin. This particular distance is being measured in millimeters and it is always engraved on the rim next to “ET” which means “Einpress Tieffe1”: balance factor in German. Rims have two ways of alignment on the axle pin: either by the central hole, either by the dowel pins. The central line is situated in the middle of a rim seen from profile. The central line is only a measurement factor according to which different dimensions of the rim will be determined. The vulva hole is an orifice through which is set the pumping vulva of the tire. Usually rims come together with a set of vulvae specific to the rim. There are also hidden vulvae which do not come into prominence in order to maintain the wheel design. For this, along with the rims, there is also a special ventil which allows pumping the tires.