grinding/scraping noise and violent shaking straight and worse turning
 

In my 2001 blazer lt, i noticed a used tire dealer put on a 235/70/15 instead of the 235/75/15 on my front passenger side and after changing the tire after a week, there was a scraping/grinding noise and shaking which became inoperable after driving to and from work twice. I recently changed the upper ball joint with a mechanic friend, and he forgot to put in the cotter pin, and also left a cable exposed (which may be getting caught in tire), i took care of these issues but its still got the scraping/grinding noise and violent shakes. Anybody have similar issues or an answer would help since the truck has been at my job for 4 days?

check the wheel nuts
that tire size should not matter

Also with the truck lifted on that side. Tire off ground turn wheel and check for the grinding noise. Grab the tire at 12 and 6 oclock and see if you can wiggle it and if there is any play. Also do this at 9 and 3 oclock. Could be a bad wheel hub

I put in in the air on my break, and shook the wheel @ 9 & 3 and 6 & 12, no resistance. it shook a lot both ways. as for the grinding noise I heard it but it was low because I couldn't spin the wheel fast because there was grinding. I just changed a broken upper ball joint and I'm guessing it took another part down with it.

Bad wheel hub, not to hard to change just takes a little while. heres video on how to do it. You didnt wreck it, it was going on its own

I looked underneath to check and see if the lower ball joint was failing, and instead found it broken.

It looks like your lower a arm is cracked !

I think that's just the shadow from the steering stop.


Sounds like you should be replacing lower ball joints and unit bearings as well. It'd be a good idea to look at the rest of the suspension and steering as well.