1997 850 R wagon - 215/45/17 RE 730's on stock Volans.
Stock suspention but with Volvo option strut brace.
Currently running 38 psi up front and 35 out back.
I judge the psi by shoulder edge wear. I run a few chalk lines over the edge of the tread and then go play and see how much I scrub off. Since it's a great mountain road I usually get to about 1/3 to 1/2 the shoulder scrubbed off. I'll probably play with the rear psi to offset a little of the understeer.
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Nathan Valles, Black 855R, MBC, tint, strut brace, RE 730's
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