First of all what year/build date do you have? Only cars built after June 2000 can accept the M3 steering wheel w/ its so-called "smart airbag". If you currently have a 3 spoke sprt wheel w/ a round airbag, but no buttons you should be fine. You'll get cruise control (and the radio controls will work) when you add the M3 steering wheel w/ buttons. If you have a 4 spoke wheel you'll have to buy the new airbag which is expensive. But if your car was built before June of 2000, you don't even have the option of buying a new airbag-- it won't work.
Well, you will have some useless buttons on the right hand side of the wheel, but if the stereo controls would still work (depends on if you still have the OE stereo system), then the M3 steering wheel (I can only speak for E46 models) is a great addition.
A forum community dedicated to BMW owners and enthusiasts. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Bringing the BMW community together.