KTM Two years later in 1962, Hans Trunkenpolz also died of a heart attack. His son "Erich Trunkenpolz" took charge of the company's management. As the company continued to expand, the workforce totaled 400 in 1971, and forty years after it was founded, KTM was offering 42 different models. Besides, KTM was able to produce motorcycles for the racing industry. During the 1970s and 80s, KTM also started to develop and produce motors and radiators. Radiators sold to European car manufacturers constituted a sizable part of the company's business in the 1980s. In 1978, US subsidiary "KTM North America Inc." was
U Should've Known Better song entered the "Billboard" Hot 100 chart, where it debuted at number 67 in the week of June 6, 2004, the second-highest debut of the week. "U Should've Known Better" remained twenty weeks on the chart, reaching its peak position of number 19 in its ninth week. It marked the second single from "After the Storm" to reach the top twenty on the Hot 100chart and, as the album's final single, would remain its second highest-charting offering behind leading single "So Gone." Although never released on a CD single or CD maxi single format, "U Should've Known Better" was also