The spider assemblies welded to rim of the wheels of certain vehicles may be subject to failure, either by bending of the inside disc (spider) or by circumferential fatigue cracking of the hat section of the spider.
Vehicle description: trailers with a gvwr of 7500 lbs. Equipped with weldwheelwheels.system: wheels; disc, spider.consequences of defect: bending or cracking of the spider in the hat sectionmay cause loss of vehicle control and an accident.