Understeer (Model Year)

TEST FACILITY	Firestone/ Dr. Guenther*	VRTC	Ford
Table 2 Comparison of Understeer Gradients Measured at Different Facilities
Understeer (Model Year)
VEHICLE MODEL
Ford Explorer
w/SLA Front Suspension:
4-Dr./4X2:
w/Firestone OE Tires	2.04 ('96) & 2.20 ('00)		2.9 ('96), 3.1 ('97), & 2.2 ('98)
w/Goodyear OE Tires	1.84 ('96)
w/Goodyear non-OE Tires	1.97 ('96)
4-Dr./4X4:
w/Firestone OE Tires	2.59 ('97)**	2.58 ('98)**	2.5 ('96)* & 2.8 ('98)
2-Dr./4X2:
w/Firestone OE Tires	1.86 ('99)		2.2 ('97)
w/Twin I-Beam Suspension:
4-Dr./4X2:
w/Firestone OE Tires	3.26 ('93)		4.1 ('93)
4-Dr./4X4:
w/Firestone OE Tires	5.13 ('93)

Chevrolet Blazer
4-Dr./4X2	4.29 ('96)		4.3 ('96)

Jeep Cherokee
4-Dr./4X2	4.94 ('01)

Jeep Grand Cherokee
4-Dr./4X2	4.42 ('96)

Nissan Pathfinder
4-Dr./4X2	3.56 ('92)		2.66 ('95)

* The understeer values in the table are the average of those measured in the clockwise and counter-clockwise directions. Also, Dr. Guenther tested the '96 model year, 2-wheel drive, four-door Ford Explorer with both Firestone and Goodyear tires, and separate entries are included in the table.

** Vehicle equipped with "Command Trac" 4-wheel-drive system that was set in "4X4 Auto" (automatic 4-wheel-drive - normally in 2-wheel-drive (rear), but when slipping is detected at the rear wheels, the center differential engages to begin to apply drive torque to the front wheels) position.

*** Vehicle equipped with "Command Trac" 4 wheel-drive system that was set in "4X2" (2 wheel-drive) position.

Table 2