> My 8 is also my everyday car, so I would like to
> know if I should change tyres or not.
Eric, if you cannot rely on another vehicle for a possible snowy day, I'd advise you to get a set of winter rubber for your RX8. However, did you get any snow last year in your area? If you didn't, summer tyres with good rain behaviour should be enough. But cold RE040s are ABSOLUTELY USELESS in the snow, even with traction control and DSC on or off!
Another point, it strongly depends were you live too. If your house is in a city and is cleaned rapidly, again, you won't need winter tyres. But if like me, you live in the countryside, where they come to clean the roads 2 or 3 days too late, and there is no tarmac on the street you live on, then winter tyres are a must. Also, my area is where the famous Rallye du Condroz takes place. It is renowned in Europe for being very slippery. Indeed it takes place in November, well before the first snow, but during beetroot harvesting. Roads are then wet, muddy with the odd smashed beetroot waiting for your summer tyre to completely loose traction.
I bought these alloys for 80 Eur only each as it's out of production now. I'll fit some winter times left from my wife's previous car (Boxster). So I'll get away with it quite cheap!!