RWD isn't dangerous, just acts differently to FWD when the driven wheels lose traction.
Not making any comment on your driving and/or experience with RWD - just fair to say that many people now only have experience with FWD, hence the 'RWD is dangerous' comments people state.
You are correct, poor tyres won't help - but if you have come from FWD cars, you'll still have some new skills to find
As said, not meant as any comment about your driving experience - for all I know, you could be the worlds best driver
Not at all the world best driver but yes have came from FWD car, Then a BMW that was RWD and now the MV6 but yeah new skills needed ASAP lol!!! the new skills being body work!!!
On your question about tyres I mostly have had Goodyears or firestone tyres on my cars ( mostly rwd ) So I would say try Goodyears.
On your other comment about expirience, do you have a skid track near you?, or you could do it as I did (about 24 years ago) wait till it snows then find a
Empty Car park and Driving slowly, use you gas pedal and get the car controlled to breakout, drive slow as on snow/ice its hard to stop and you dont want to damage your car again. when the car breaks out stear into the slide ( ie backend goes left stear left) not to much though, it takes a bit of time to get used to but does make a lot of fun and you learn how to keep your car under controll.
But till then if the backend breaks out, Foot from gas and dont break.