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Your tire wear looks just about perfect, I wouldn't touch it unless you have pyrometer readings across the tread. And even then the pyrometer readings will tell you more about your alignment settings than what you should be running for tire pressure.
The reason why your wheels are hitting the struts is because you're running wheels that are too wide or with too much offset. Once you shim you can easily run wider wheels/tires with LESS offset. I can cram 9" wide rims with ET30 with 2 shim washers. If I have to guess...That's a 9" wide front wheel? 35mm offset?
You have 2 choices. Either go big or go home. Run 245mm wide on 8.5" or narrower wheel with no more than 38mm offset, or if you want to run 9" or wider, run it on 25-30mm offset with at least 3º negative camber.
What I've found that works with up to 2 shims:
225-245mm wide on 8" rim, ET38-44. -0.7º to -2.5º camber
245mm wide on 8.5" rim, ET 35mm-40mm -1.5º to -2.5º camber
255-274mm wide on 9" rim, ET 25-30mm -3.0º or more camber
The camber shims allow for a lot of negative camber adjustments without a lot of $$$, but it takes away inner clearance on wheels. Camber plates allows for a lot of negative camber adjustments but cost more $$$, but gives you much better range in inner clearance.
Using a combination of both gives you the best flexibility in inner AND outer clearance, i.e, you can shim 1 washer, and dial in a lot of camber to run super wide (that's what I am doing) up front.
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