My front tire is consistently losing pressure. I sprayed down the schrader valve, sidewall/bead, and the full tread with soapy water. I didn't see any bubbles. I didn't experience this last winter with the Bridgestone Battleaxes. I have checked and been as much as 10psi low a day or two after refilling. Do any of you experience the same because of the cold? Tire held pressure just fine over the summer.