total agreement with vespbretta.
Winter 2018 I had Baotian retro 50 scooter with origina Duro wheels, age six years. Drove few times nearby when watersnow on the road, because of disliking buses, and no damage at all when top speed was like 20 kmh
No angles, but upright only
On those trips, no tramway at all
Tire pressures are 2.0 and 2.5, easy to know if less, because takes more gas and slows the speed, not much but do.
Rode today +20 km at the city, +6 c, to load the battery etc. But of course, half on my way back from fish store started rain, so business as usual
Safe rides and stay warm, everybody wit or without masks