Vehicle	Model Year	Drivetrain	Source	Wheelbase (in)	Data Reduction*	Understeer Gradient (deg/g)	Standard Deviation** (deg/g)	95% Confidence Interval**
Table 3B Understeer Gradients for SUV Models with Data Available from Only One Source
Vehicle	Model Year	Drivetrain	Source	Wheelbase (in)	Data Reduction*	Understeer Gradient (deg/g)	Standard Deviation** (deg/g)	Lower Limit	Upper Limit
BMW X5 - 4-Dr.	2001	4X4	Ford			1.7
Dodge Durango - 4-Dr.	2001	4X4	Ford			2.3
Chevrolet TrailBlazer - 4-Dr.	2002	4X2	Ford			2.6
Mercedes-Benz ML430 - 4-Dr.	1999	4X4	Ford			2.6
Jeep Liberty - 4-Dr.	2002	4X4	Ford			2.8
Isuzu Amigo - 2-Dr.	1999	4X4	Ford			2.8
Honda CRV - 4-Dr.	2001	4X2	Ford			3.0
Toyota 4Runner - 4-Dr.	1994	4X2	Ford			3.2
Chevrolet Tracker - 2-Dr.	1998	4X4	VRTC	85.6		3.34	0.16	3.34	3.34
Nissan Pathfinder - 4-Dr.	2001	4X4	Ford			3.4
Honda CRV - 4-Dr.	2000	4X4	Ford			3.4
Lexus RX300 - 4-Dr.	1999	4X2	Ford			3.5
Lexus RX300 - 4-Dr.	2000	4X2	Ford			3.5
Nissan Pathfinder - 4 Dr.	1992	4X2	Guenther			3.56
Lexus RX300 - 4-Dr.	2001	4X4	Ford			3.6
Acura MDX - 4-Dr.	2001	4X4	Ford			3.7
Dodge Durango - 4-Dr.	1998	4X4	Ford			4.3
Jeep Grand Cherokee - 4 Dr.	1996	4X2	Guenther			4.42
Chevrolet Tahoe - 4-Dr.	1998	4X4	VRTC	117.2		4.67	0.60	4.67	4.67
Nissan Xterra - 4-Dr.	2000	4X4	Ford			4.9
Jeep Cherokee - 4-Dr.	2001	4X2	Guenther			4.94
Jeep Cherokee - 4-Dr.	2001	4X2	Guenther		VRTC	5.26	0.35	4.89	5.63
Jeep Cherokee - 4-Dr.	2001	4X2	Guenther		Ford	4.56
Jeep Grand Cherokee - 4-Dr.	1998	4X4	Ford			5.4
Chevrolet Blazer - 4-Dr.	2000	4X4	Ford	107.0		5.5
Jeep Grand Cherokee - 4-Dr.	2000	4X4	Ford			6.1
Jeep Grand Cherokee - 4-Dr.	1999	4X4	Ford			6.5

* Firestone provided a copy of the raw test data for the vehicles tested prior to May 31, 2001, VRTC staff analyzed this data using the same data reduction techniques used for the tests performed by VRTC, and Ford staff analyzed the data for the Chevrolet Blazer and Jeep Cherokee using the same data reduction techniques used for the tests performed by Ford.

** The Standard Deviation and the 95% Confidence Interval indicates the statistical variability that results from the different results obtained during individual test runs performed during one series of tests. In the case of the VRTC tests, there were three test runs in the clockwise direction and three test runs in the counter-clockwise direction. In the case of the Guenther tests, the number of runs upon which these numbers are based are shown in parantheses after the Standard Deviation value.