2002 Silverado HD Tire Conversion

[RoarinRow]

After seeing different threads on recommended PSI, I just remembered that I haven't done my own conversion on PSI from stock to aftermarket wheels/tires.

I contacted Toyo Tires at 800-442-8696 (US) and got a hold of someone from their Customer Relations Market. I explained my situation and they manually calculated what my new PSI should be on the new 35" tires.

For my 02 Silverado 2500 HD LS model:
- GVWR (according to door jam sticker) = 4173KG (9200LB)
- Stock tires front and rear were LT245/75R16E
- Rim 16x6.5J
- Tire PSI Cold
- Front 55 PSI
- Rear 80 PSI

I gave them this new information:
- Toyo Open Country A/T II - 35x12.5x17
- New rim width - 10.5"

Toyo's Recommendation:
- Front 34 PSI
- Rear 54 PSI
Based on 65 PSI Max rating

So I guess I have some adjusting tomorrow morning before I start driving her around.

Question - what kind of adjustments should I make to Toyo's recommendation for the following conditions:
- Winter or Snow driving conditions
- Trail riding (I currently have my deflators kit set at 28 PSI)
- Camper shell always on
- Bed of truck always loaded with gear
- Hitch has Wilco steel tire carrier installed with 35" spare tire and aftermarket rim

Any advice is appreciated.