42 is to high...... 32-35 sounds more like it. Use a gauge to check that DIC reading too.....

 

The DIC pressure is really fairly accurate, and over inflation can cause a vibration. Some Old Fashioned tire shops over-inflate under the assumption that the bead will leak a little bit, and "we told you in the fine print to come back in 100 miles to check the TP and the lug nut torque", and I bet that it actually is somewhere on your service ticket, in the C.Y.A. (not Catholic Youth Ass'n) area, or, posted somewhere around the sales desk.