although your tires are rated for more weight, you arent actually carrying any more weight are you?

If thats the case, you can go lower with your pressure. 29 psi means every square inch of tire exerts 29 pounds of pressure on anything that contacts it. Your tires contact with the road is around 3-4 inches x the width of your tire.

Your new tires are 10mm (about 1/3 inch)wider than stock so your contact patch becomes larger and less pressure is needed to achieve the same force exerted on the rosd.