The short answer is, "No."
The longer answer is:
The Load Limit of your P275/60R20 tires at 35/36psi is 2,601 pounds. Also the Maximum Load Limit for those tires. The maximum inflation pressure for these tires is 44psi, but the Load Limit does not increase above 35psi.
The Load Limit for your LT285/55R20E tires at 35psi (the Minimum recommended inflation pressure for these tires!) is only 1,850 pounds. Even allowing for the 10% difference between P-rated and LT-rated tires, the Load Limit for these tires should be set to around 2,365 pounds to adequately support the vehicle and attain the same contact patch as the P-rated tires at 35psi. The Tire Pressure required to achieve the 2,365 pound Load Limit is actually around 49psi
To check if you are using the proper inflation for the P-rated tires, two times the Load Limit (2,601 pounds x 2 = 5,202 pounds) should be approximately 115% of your GAWR (Gross Axle Weight Rating) found on the sticker on your door jamb.
I suspect that 35psi is a little high for your application.
