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2010 Buick LaCrosse CXS to receive new HiPer Strut suspension [Video]

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2010 Buick LaCrosse CXS to receive new HiPer Strut suspension [Video]

03/26/2010, 1:39 PMBY MARK KLEIS

Buick just released an all-new LaCrosse for 2009, but that isn’t stopping the automaker from adding noteworthy upgrades to its attractive new sedan. For 2010, Buick adds a new suspension system known as HiPer Strut to the range-topping CXS – intended to greatly reduce torque steer and improve ride quality.

The all-new GM-developed “High Performance Strut,” or HiPer Strut system, is partnered with conventional dampers for the 2010 LaCrosse CXS and promises to reduce torque steer, improve vehicle sensitivity to wheel imbalances, improve linear steering feel and aids in impact isolation on rough roads.

“HiPer Strut helps reduce torque steer and maintain negative camber during cornering,” said Jim Federico, chief engineer for Buick LaCrosse. “That improves ultimate grip levels in dry and wet conditions, as well as improves the direct feel of the road, while isolating undesirable feedback. Behind the wheel the driver experiences reduced torque steer, improved grip and increased cornering power, along with crisper handling, steering precision and feedback.”

(More after video)

Buick’s HiPer system is based on MacPherson strut front suspension design and utilizes dual-path top mountings that help to separate the transfer of loads to the body. Typically, the steering knuckle and strut carriers would be separated, but the HiPer Strut system places them in a unique combined design. Buick points out that this design also allows for the use of a limited-slip differential, providing for even better traction. Incidentally, the system also provides for improved ride quality with heavier and larger-diameter wheels, like the standard 18-inch and optional 19-inch wheels on the LaCrosse CXS.

Although not directly part of the HiPer system, Buick does also utilize a rigid body structure that utilizes high-strength steel in key locations. This is found across all trim levels of the LaCrosse, despite HiPer being limited to the CXS. The LaCrosse CX, CXL and CXS all utilize a four-link design which is mounted to four points in the rear. In order to accommodate the optional 19-inch wheels, Buick actually changes to a unique H-arm design which uses the same attachment points as the four-link system, but uses a cross member attached with isolated mounts.

link with video:


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