Bonus cars:
Enter one of the following names at the driver creation screen to unlock the corresponding car in any game mode.

Audrey Clark
Benny Parsons (TNT Sports car)
Benny Parsons2 (NBC Sports car)
Buster Auton (pace car)
Cheryl King
Chuck Spicer
Crissy Hillsworth
Daryl Wolfe
Dave Alpern
Dave Nichols
Diane Grubb
Dick Paysor
Jim Hannigan
Joey Joulwan
Josh Neelon
Katrina Goode
Ken Patterson
Kitt Paint (primer car, no decals or paint)
Kristi Jones
Mandy Misiak
Michelle Emser
Rick Edwards
Rick Humphrey
Sasha Soares
Scott Brewer
Tom Renedo
Traci Hultzapple
Troi Hayes

Bonus cars:
Win the points championship in career mode to unlock the following cars and clips.

One time: Greg Biffle's and Shane Hall's Busch car. Note: This also unlocks another clip in the EA Sports section.
Two times: Kevin Grubb's and Randy LaJoie's Busch car.
Three times: Jason Keller's and Jamie McMurray's Busch car.
Four times: Chad Little's and Michael Waltrip's Busch cars.
Five times: Elton Sawyer's and Mike McLaughlin's Busch cars.
Six times: Jay Sauter's and Mike Dillon's Busch cars.
Seven times: James Finch's and Scott Wimmer's cars.
Eight times: Jeff Green's or Tony Raines' car.
Nine times: Tony Raines' car.

FMV sequences:
Successfully complete season mode to unlock a new FMV sequence each time that it is done. To view the Richard Petty Bonus Championship FMV, win eight championships.

Hint: Recommended settings:
Note: If you are playing in career mode, these settings work best with a fully tuned car.

Atlanta	45 p.s.i.	45 Degrees	60 Percent	-3.5 Turns	10
Bristol	45 p.s.i.	69 Degrees	85 Percent	-4.0 Turns	2
California	33 p.s.i.	50 Degrees	75 Percent	-4.0 Turns	6
Chicagoland	45 p.s.i.	65 Degrees	40 Percent	-0.5 Turns	6
Darlington	45 p.s.i.	60 Degrees	51 Percent	-4.0 Turns	5
Daytona	42 p.s.i.	45 Degrees	80 Percent	1.0 Turns	9
Dover	30 p.s.i.	71 Degrees	75 Percent	-2.0 Turns	5
Homestead Miami	30 p.s.i.	74 Degrees	100 Percent	-4.0 Turns	5
Indianapolis	30 p.s.i.	66 Degrees	52 Percent	-4.0 Turns	7
Kansas	35 p.s.i.	65 Degrees	75 Percent	-4.0 Turns	6
Las Vegas	30 p.s.i.	66 Degrees	50 Percent	-4.0 Turns	6
Lowe's	45 p.s.i.	70 Degrees	40 Percent	1.0 Turns	6
Martinsville	30 p.s.i.	75 Degrees	100 Percent	-4.0 Turns	2
Michigan	45 p.s.i.	60 Degrees	40 Percent	-2.0 Turns	6
New Hampshire	30 p.s.i.	70 Degrees	100 Percent	-4.0 Turns	3
North Carolina	45 p.s.i.	70 Degrees	50 Percent	-4.0 Turns	5
Pocono (Qualify)	30 p.s.i.	66 Degrees	70 Percent	-4.0 Turns	6
Pocono	30 p.s.i.	66 Degrees	70 Percent	-4.0 Turns	7
Richmond	30 p.s.i.	70 Degrees	52 Percent	-3.5 Turns	3
Sears Point	30 p.s.i.	74 Degrees	75 Percent	-4.0 Turns	4
Talladega	30 p.s.i.	45 Degrees	44 Percent	-4.0 Turns	8
Texas	30 p.s.i.	60 Degrees	50 Percent	-4.0 Turns	6
Watkins Glen	30 p.s.i.	75 Degrees	100 Percent	-4.0 Turns	4

Hint: Other recommendations:

Bristol
Transmission: Manual
Tire Pressure: 48
Shocks: 100%
Downforce: 7.4
Wedge: 47.6%
Left Bias: 300
Rear Bias: 240
Wheel Lock: 15.0
Gear Ratio: 10.0, 7.20, 5.70, 4.60

California
Transmission: Manual
Tire Pressure: 44
Shocks: 50%
Downforce: 1.0
Wedge: 49.2%
Left Bias: 210
Rear Bias: 0
Wheel Lock: 15.4
Gear Ratios: Default

Charlotte
Transmission: Manual
Tire Pressure: 40
Shocks: 0%
Down Force: 1.0
Wedge: 46.8%
Left Bias: 300
Rear Bias: 180
Wheel Lock: 14.6
Gear Ratios: 7.71, 5.56, 4.00, 3.20

Darlington
Transmission: Manual
Tire Pressure: 40
Shocks: 70%
Downforce: 2.6
Wedge: 49.2%
Left Bias: 300
Rear Bias: 180
Wheel Lock: 14.2
Gear Ratios: 7.71, 6.01, 4.25, 3.20

Daytona and Talladega
Transmission: Manual
Tire Pressure: 48
Shocks: 0%
Downforce: 1.0
Wedge: 49.2%
Left Bias: 300
Rear Bias: 180
Wheel Lock: 13.8
Gear Ratios: Defaults

Dover
Transmission: Manual
Tire Pressure: 44
Shocks: 100%
Downforce: 3.4
Wedge: 48.4%
Left Bias: 300
Rear Bias: 180
Wheel Lock: 15.0
Gear Ratios: 7.61, 5.81, 4.20, 3.20

Homestead Raceway
Transmission: Manual
Tire Pressure: 48
Shocks: 40%
Downforce: 1.0
Wedge: 48.4%
Left Bias: +300
Rear Bias: 0
Wheel Lock: 15.4 degrees
Gear Ratios: 7.61, 5.51, 3.70, 3.00

Indianapolis
Transmission: Manual
Tire Pressure: 40
Shocks: 80%
Downforce: 1.0
Wedge: 48.4%
Left Bias: 300
Rear Bias: 180
Wheel Lock: 14.6
Gear Ratio: 7.06, 5.21, 3.70, 3.00

Phoenix
Transmission: Manual
Tire Pressure: 44
Shocks: 100%
Downforce: 4.2
Wedge: 49.2%
Left Bias: 300
Rear Bias: 180
Wheel Lock: 14.6
Gear Ratio: 9.50, 6.40, 4.00, 3.20

Pocono
Transmission: Manual
Tire Pressure: 36
Shocks: 60%
Downforce: 1.0
Wedge: 49.2%
Left Bias: 180
Rear Bias: 180
Wheel Lock: 13.8
Gear Ratios: 7.56, 5.56, 3.70, 3.00

Richmond
Transmission: Manual
Tire Pressure: 52
Shocks: 100%
Downforce: 5.0
Wedge: 48.4%
Left Bias: 300
Rear Bias: 180
Wheel Lock: 14.2
Gear Ratio: 9.16, 7.20, 5.70, 4.36

Sears Point
Transmission: Manual
Tire Pressure: 28
Shocks: 100%
Downforce: 8.2
Wedge: 49.2%
Left Bias: 0
Rear Bias: 180
Wheel Lock: 15.0
Gear Ratios: 10.00, 7.80, 5.80, 4.25

Texas Motor Speedway
Transmission: Manual
Tire Pressure: 52 PSI
Suspension: 100%
Down Force: 1.0
Wedge: 46.0
Left Bias: +300
Rear Bias: +120
Wheel Lock: 15.8
Gear Ratios: 8.31, 6.06, 4.00, 3.20

Watkins Glen
Transmission: Manual
Tire Pressure: 40
Shocks: 100%
Downforce: 7.4
Wedge: 49.2%
Left Bias: 0
Rear Bias: 180
Wheel Lock: 14.6
Gear Ratio: 10.0, 7.30, 5.70, 4.30

Hint: Ramming cars:
Get the car you want ram directly besides. Keep him beside your car on the left side. When you are coming around a corner, press Analog-stick Left to send him straight into the wall. You can also keep him along your left side and wait for the pit entrance get near. Then, press Analog-stick Left to send him into the pits. Some cars can regain control before they go in, so get as close as you can.

Glitch: Immovable car:
Drive the wrong way into the pits and hit the pace car. It will not move.