NHTSA to Investigate Valve Stem in 2007 US Ford Models
In the US, the National Highway Transportation Safety Administration (NHTSA) has disclosed it is investigating the Ford Motor Company’s use of potentially defective valve stems on more than one million vehicles built during the 2007 model year. The component, if defective, can crack, causing air pressure in a tyre to suddenly decrease. Investigators suspect a cracked valve stem was a causal factor in an accident that killed a 31-year old man last year.