You refer to “tire dealer” and “dealer”. Are these the same person or is “dealer” the Honda dealer? Did the tire dealer’s recommendation come from a chart that matches your tires to your model vehicle or was it a generic recommendation for the tire only?
I would consider the vehicle manufacturer recommendations as a minimum. Since you can expect to lose about 1 psi per month, then add that amount for each month you normally go between checks, not to exceed 6. If you do a lot of highway driving, you can also fell free to add a couple of psi, again not to exceed 6 over the mfg recommended, or in your case 36 psi.
Your answer is here. This web site is sponsored by Bridgestone, which manufactures and owns Firestone. I think your tire dealer needs to watch the video at this site also as it appears that he maybe violating company policy. Watch the video and enjoy