2010 rs se5 bought from insurance

Only test drove my spyder around the neighborhood to test drive my fixes. I was planning on a longer drive after I changed the oil, however my local can am shop talked me into buying the oil kit. So glad I trusted them....not. gave me the wrong trans filter.

Anyway reading threads on tires.. I seem to have the stock tires and even though at first glance all are good. The back tires seems worn in the center. Soooo. I decided to ck the pressure. 35 psi front 40 psi rear. Wtf

So I lowered to 22 in the front.. even though my manual says 17. What do you think. Should i start with suggested pressure or..
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Phil