How bad of an idea is using ERW tube for pushrods and a-arms? The seam adds another path for failure, but assuming good quality tubes, are the stresses enough that we need to worry about failure in 5/8" x .049 or .065 ERW tubing? My gut says no. But, then again, this is the first suspension I've ever designed, so I don't feel confident going forward on FEA alone.
Thanks ahead of time for any advice you guys can give.