Should 1.5'' be fine?

[CivicSlug]

I am using the same Eibach springs, 1.5" drop. I was told that a camber kit would not be needed. After about a year I noticed the tread; moreso in the rear, was worn out on the inside.
This occured worse when I was running my 17's, not so much on my stock winter tires, but it did occure.

This past spring I installed Bilstein Sport shocks and have been pleased I also installed one of those anchor bolt ones Hondamaniac was talking about, I belive its a Revo

Hondamaniac was right it does squek now and then, but it was cheap and it fixed my camber/alignment problems. Besides, thats what radios were made for...right?