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You didn't say they were LR D before. What was talked about before was a LR E, max 80. All load ranges of tires would have a different recommended pressure. If you had stated yours were a LR D max 65, I would have said 45.
PS - For yours, a TPMS sensor would be set to show low at 38.

http://www.nhtsa.dot.gov/cars/rules/...ule.html?name=

 

must be some editing going on or somethin'

 

after a couple of weeks,it's alot rougher ride at 45psi than 40. I guess I will meet in the middle, 42 it is.