A Texas judge on Thursday gave preliminary approval to a national class-action settlement involving Bridgestone Corp.'s Firestone unit and its August 2000 recall of 6.5 million tyres, Reuters reported. As part of the settlement, Firestone would spend $US15.5 million on a three-year consumer education program focusing on tyre safety and incorporate technology that would improve the high-speed capability of some tyres, the report added.