fˈɑːloʊɪŋ ðə nˈaɪntiːnhˈʌndɹɪd nˈaɪnti ˈeɪt twˈɛnti fˈoːɹ ˈaʊɚz ʌv lə mˈænz, ɹˈuːlz fɚðə dʒˌiːtˈiː klˈæsᵻz wɜː tʃˈeɪndʒd, mˈoʊstli tʊ ˈɛnd ðə nˈʌmbɚɹ ʌv mˌænjuːfˈæktʃɚɹɚz ɐtˈɛmptɪŋ tə jˈuːz lˈuːphoʊlz.
Following the 1998 24 Hours of Le Mans, rules for the GT classes were changed, mostly to end the number of manufacturers attempting to use loopholes.