I just bought a loadrite trailer that carries a 1500 lb. 18 ft. boat and has st205/75d-14 tires.<br />The tires give a max. pressure on the side wall of 50 p.s.i. cold.<br />What should the tire pressure be kept at for high way travel? <br />Also how should the safety chains be attached to the trailer? The trailer I bought has no chains on it.<br />Bill