On August 24, Tadeusz Mazowiecki, a Solidarity representative, was elected Prime Minister of Poland, who became the first non-communist prime minister in Eastern Europe for almost four decades. By the end of the month, a Solidarity-led coalition government was formed. In December 1990, Walesa was elected president.
Wheel Offset. Wheel offset (abbreviated ET) is the distance from the mounting surface of the hub (M) to the wheelâs centerline (C). Offset can be positive or negative and is typically measured in millimeters. Wheel Backspacing. This is the distance created between the plane of the inner rim and the mounting surface of the hub (M).
With the wheel facedown, rest a ruler horizontally along both edges (beads) of the wheel. Now take a tape measure and measure the distance from the ruler to the mounting pad of the wheel. That figure is your backspacing. Calculating a wheel's offset is even easier. Measure the wheel's overall width, subtract its backspace and divide by two. Wheel spacers are simply an inexpensive way to create clearance between a wheel/tire and items like steering components and brakes.