3, Does anyone know the normal road conditions for Sage creek rd and Hells backbone rd? (eg. is it enough with a ”normal” car or is it neccessary with 4x4 and/or high clearance?)
If a road is unpaved, you are not allowed to drive any rental vehicle on it, even if it's a high clearance 4x4, unless it's a local rental that gives you specific permission to drive it "off road". Both those roads are unpaved.