Wheel Studs / Tires / Rims

sc3283 wrote:
mapguy a lugnut with too long of a shank will bottom out on the drum before pulling the wheel tight to the drum...this will allow the wheel to remain loose..the wheel wobbles on the stud ans shank of the lug nut...the stud breaks.

It does NOT take much movement at all from a loose wheel to work a lug stud to the point of breakage

while none of this is rocket science...it is easily overlooked and even easier of a person doesn't deal with mechanics on a daily basis.

I don't think shank length should be an issue since AFAIK all trailer wheels will have the conical seats and as long as you are using the conical seat lug nuts as mentioned about the only two things to cause stud failure is over torquing or torque too loose and my bets would be on the former since with the conical fastening system you can prevent most wheel slippage that can cause stud failure.

The flat two piece washer and the conical seat fastening system are not directly related to whether a wheel system is lug or hub centric. However all flat washer fastening systems will be found only on hub centric systems and wheel with oversized hub pilots and which are commonly referred to as "LUG CENTRIC" will have the conical fastening system. HOWEVER, you will find the conical fastening system used on some HUB CENTRIC wheel systems.

BTW you will only find HUB CENTRIC wheel systems on factory OEM motorized vehicles. Trailers and unmanned towed vehicles don't really require the precision of a HUB CENTRIC wheel system because minor NVH issues are not a problem like they are in manned vehicles. Thus I think you will find ALL TRAILERS and towed vehicle wheel and wheel systems will use the conical fastening system or at least an extremely large percentage of them.


Larry