Some tires are difficult to seat on the rims. Try inflating to 10 psi and then go around the rim and correct any misalignment by pushing/pulling the tire into the correct position. Tires normally have a witness line on them that helps align the bead. Once good, inflate another 10 psi and go through the process again. After a 3-5 rounds of this gradual inflation, you should be able to go full pressure.
Good luck