I've never had problems with traction on my S50, even in soaking wet conditions, but that being said I usually don't drive like a nutcase, and adapt my driving style to conditions (I guess years of driving in Finland has also helped). I've also had proper tyres: got the car with some Avons, now Good Year F1 Asymmetrico 2s. Avoid cheap s**t tyres as they can be very slippery on wet and unpredictable on the limit.
When losing traction on purpose, car's been very predictable and easy to control, although if traction would be lost inadvertently I'm sure the extra second or so to react would make things a bit different! Nevertheless, unless you plan on driving it like you stole it, S50 is fine. And there's always the option of getting an aftermarket traction control (e.g. Racelogic) fitted!
How much are you planning on using the car? What's your budget? If you plan on driving a lot, a reasonable mileage S50 in good condition would be my choice as there are many available, they are relatively cheap, and if you ever sell it you'll probably get your money back. If you won't do many miles and have a bit of extra dosh, trying to find a low(ish) mileage S54 and keeping it in great condition would IMHO be a decent investment.
Have you seen Liam's car (Z3cade, advertised here as well)? Having seen it up close, it's a well-sorted, well-modded, very clean example!
, BMW Z1, BMW M3 CSL, Z4M Coupe
handling, even in a well balanced car.
