I since 22''s typically have such low sidewall, I run them a little higher than my oem 17's. I typically set pressure to be about 33-34 psi.

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Dear Mr. F-150,
I may only have 225 hp but I sure owned you back when it snowed.
Regards,
X5 3.0i Bellevue, WA

p.s. with Toyo Proxy s/t's on