Hey bud,
If you are into games that are more simulation then there is Assetto Corsa, and then Project Cars. Project cars was meant to be launched now in November but has been delayed to March next year. These games require you to have a wheel and pedal set though.
I myself am big into online competitive racing and Assetto Corsa and iRacing do this for me. iRacing is for hardcore sim racers, and isnt for everyone. It requires a membership to use the service as well which is not for everyone. But often you may come across some known celebs like Dale Earnhardt and Rubens Barichello racing around as well. It is by far the most realistic experience when it comes to sim racing.
I rate you should google the above mentioned games/sims and decide for yourself if that's what you more into.
If you aren't too fussed about realism and simulation and are happy to use the keyboard then the Need For Speed Shift series is good as well as the Grid series. A nice new one that just came out is a game called The Crew, basically gives you the entire North Americas to drive and race around in. Big open world it looks promising.
Otherwise google it bro. Best racing games 2014 and see what comes up