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tire pressure

  1. Pressure for smaller than OEM sizes

    Focus ST Tires & Rims
    I noticed on the sticker on Jay's car that it listed a different pressure recommendation, 44 psi vs 36 psi, for the 215 55 16 spare vs the 235 40 18 tires. I'm planning to go to either the 215 50 17 or 215 55 16 for winter tires. This would seem to indicate to me I'll need to run higher pressure...