Ohh Idk :3

Big Rigs: Over the Road Racing

Euro Trucks!

from What I've heard. RFactor.
But bear in mind it's not a game. It's really a simulator so unless you know your way around cars, its really hard.
I play it at my friends house and it's the best but he tunes the cars etc etc..

So real you can break the engine

Two:

1. iRacing - Laser mapped tracks with amazing detail and control over wet/dry, day/night conditions in many cases. It is a true simulator, so be prepared for a semi-steep learning curve. However, this is the primary program the pros use to train. A robust online racing community where you may occasionally be racing pros.

2. RFactor - As Marques said, this is also a great simulator. The tracks aren't as accurate as iRacing, but they are still quite good, and the variety of downloadable mods is staggering. Anything from world-class facilities, down to regional club tracks. Same with vehicles.

Certainly there are others that are fun as well, but these two are king.

Great wheel, BTW. That's the one setup in my office right now. :)

Seriously, GET A RACING SEAT TO GO WITH THIS. That is my wet dream. Well, for me to own such, not you.

I don't know which one is the best. But for real driving simulator, you can try Euro Truck Simulator 2 or City Car Driving.

Steam only? GTR 2, GT Legends & Race 07.

Non-Steam? iRacing, rfactor/rfactor 2 & the upcoming pCARS & Assetto Corsa

SimBin Mega Bundle on Steam.

Free Try:

RaceRoom Racing Experience (on steam)
iRacing (find a 1 month trial somewhere)
Simraceway (didn't tried myself, but heard good about it)
rFactor 1/2 (didn't tried)
LIVE FOR SPEED (really awesome, but left behind with updates)

Gotta Buy:

RACE Injection (from SimBin, probably RRRE mentioned above has better physics)

Coming:

Asseto Corsa
Project Cars

18 Wheels of Steel.

Also, for about the same price as the wheel, I suggest going to a local driving event and doing the real thing!

In the long run, the G27 will be a WAY less expensive habit. But you should definitely do a track day at least once in your life if you have the scratch to do it.

I play Driver: San Francisco with a wheel. It's very fun :)
Not a simulator, though...

My ideal racing experience consists of a Logitech G27, surround sound headphones, a bucket seat, an Oculus Rift, and a great looking racing game, probably Project Cars.

Too bad the G27 is so expensive, but I still hope to get one sometime in the future. I'd probably need to upgrade my computer to get Project Cars running at a stable 60 FPS.

Richard Burns Rally. No idea if they still sell this, though.. the company that made it went bankrupt, but it's the best rally sim ever made.

Race 07, by far. I've been told Grid is also worth purchasing, especially if you intend on using a racing wheel.

rFactor, Live For Speed, Richard Burns Rally, Race 07.

City Car Driving? It's non-steam game, which happens to be quite costly. However, driving around is fun, and there are tons of mods for it, like this baby. Owners know why! :)

The game is very realistic. For instance, if you're waiting on a red light, in-gear, and you release your clutch, the engine will stall. If you let off the clutch and hit the gas too hard, the engine will stall. If you come to a full stop without holding your clutch, the engine will stall.