Installed the 18" Wheels on the Duster

You may want to back some of that camber out. Typically around -1* you start to see tire wear on account of the camber. If it's used mostly for spirited driving in corners it probably won't be an issue, but if it just gets cruised around most of the time you may see some camber wear at -1.5*.

Not worried about tire wear honestly. I can also rotate them front to rear. 1.5 isn't out of the realm of what I have seen factory on some BMWs. I have the same tires (Continental Extreme Contact DW) on my 04 Colorado and they are 5 years old and have over 25k on them and are still about 1/3 left before the wear indicators.

The Duster gets driven about 1500 miles per year. I'm sure they'll probably dry rot before they wear out. This is a fun car :D. Also been all summer (1k miles on the 15" BFGs with that setup and I can't even tell)