I have a problem where both front tires on my 1989 Toyota truck are wearing out the inner tread at an abnormal rate. So much so in fact that steel belt broke through on the drivers side tire and I had to replace it. The passenger side front tire has significant inner tread wear as well. All tires (rear and front) were installed together new less than 2 years ago, so there is a serious problem.
I try to perform all my own repairs, or at least diagnose the problems myself and buy the parts needed and take to my buddy's garage for the labor to install. I watched youtube videos on alignment and followed the preliminary diagnostic steps. The truck does not veer to either direction when steering wheel is released in straight driving. The visual inspection did not show any serious toe, camber, or caster alignment problems, at least not to the extend that would cause such abnormal inner tire wear. The shocks are shot on both sides however. I can really feel the potholes. Could the bad shocks be mainly responsible for the abnormally excessive inner front tire wear?
The rear tires are still good with no abnormal wear. Breaking system is fine.