Ive done I40 both East & West with my FR3 33DS in April 2020.
Hwy 40 is more than adequate to handle your 30DS. Easy ride. Now if snowing, park it, wait for a clear road. 7 Miles East of Albuquerque New Mexico was the only place I encounter a freak snowstorm. So I headed back to Albuquerque for the night.
As for I-17 in Arizona, concern would be to watch the weather. it can snow on any of those roads also including i-40 and i-17
I have not driven I-17 so Arizona experts here would be best to listen to.
2019 FR3 33DS Motorhome
650 Watts Solar, 400Ah LIFEPO4, 2000 Watt Inverter, 40A DC/DC Charger, SumoSprings, Roadmaster Steering Stabilizer, BlueOx Trac Bar, Truma AquaGo WH, NVIDIA Shield TV
2019 57:2020 20:2021 30 [/B]