Tire Pressure Recommendations ?? - 19" Base Wheel and Winter Tire Package

[arijaycomet]

Just picked up my 2014 Tesla S85 (Non-performanced) on Monday. It came with the 21" Turbine Wheels, so I immediately had the local service center install the $2500 19" winter package. This is the base wheel, with the Pirelli 240 Sottozero tires. I'm curious to know what you folks find is an optimal tire pressure to run them at. I've typically run 2-3psi higher on most cars in the past for better rolling resistance, but the Tesla is both new to me, and also one of the heavier cars I've owned.

TIA for any suggestions....