I have a 92' camaro stock p245 50 R16 tires. I lowered the car back in 2004. I never had any tire rubbing until 2018 after returning to wisconsin from a trip out west. I took it to a local alignment shop. I was told the strut bolts were loose. They said they tightened the bolts and did an alignment. After the alignment the car's front tires still rub on the inner fender plastics and the ground effects. My question is how to move the tire location so it wont rub? Would shimming the arm's forward would that help? Please any help would be appreciated.

 

These cars often do that. The outside edge of the inside tire of a turn (the left on a left turn & vice-versa) rubs where the inner liner meets the rocker GFX.

No you can't "shim" the control arms. They have bolts that go through their bushings whose location can't be changed.

Keep in mind, the stock "spec" for caster, is very near 0. Extremely STOOOOOPID: if you align one of these cars per the manual, you end up with a very vague center or even wandering, a "dead" or "limp" feel to the steering, and it EATS the outside edge of the tires. These "specs" however locate the tire roughly centered in the wheel well. A better alignment setting is, all the positive caster (top of strut) moved rearwards as far as possible, with perhaps a half degree or so higher on the right, if the roads where you drive have a high center crown. Most cars you can get maybe 4 degrees or so, maybe even 5, before you hit the end of the slots. I would consider 4 as the absolute minimum for a good street setup. Sounds like when you had it aligned, they did a good job, and set it up somewhat as I just described.

However, this obviously moves the tire rearwards in the fender well. Can't be helped, it's simple geometry. If you align the car for best performance, it's GOING TO rub. No way around it, except to avoid the conditions that make it rub.

Tires that are on the larger side of the range that the "trade" size covers, or that have tread corners that are more square, aggravate it further.

Just gotta learn to deal with it.

 

I've owned one or more of these cars since 1991 and have worked on many of them, and I've never seen one that didn't have some sign of rubbing in the front wheel well...