265/70/18 tire pressure vs 275/65/18 tire pressure?

I am now running LT265/70/18 Michelin LTX A/T2 Load Range E.
These replaced the stock Michelin P275/65/18 A/T2.

Discount Tire says 40 PSI front and 45 PSI rear for tire pressure for the LT265/70/18.
Stock tires call for 30 PSI front and 35 PSI rear per nameplate data.

Does that seem correct? Any replies are appreciated.

2018 Toyota Tundra SR5 Double Cab TRD Offroad, all stock.

 

42 front 46 rear according to this. You can use chalk test to dial it in from there.

 

Thanks for that. Yes, the chalk test is good advice.

 

You got it bud! Anytime.