Rollovers are statistically rare and disproportionately deadly. According to NHTSA and the Insurance Institute for Highway Safety, rollovers account for roughly two percent of all crashes but produce nearly a third of passenger-vehicle occupant fatalities. The risk is not evenly distributed across the fleet. SUVs and pickups, particularly older platforms with narrow track widths and high centers of gravity, roll over at rates several times those of passenger cars.
Stability and rollover cases are crashworthiness cases at their most physical. The defect is rooted in geometry—the relationship between a vehicle’s track width and the height of its center of gravity—and is compounded in many cases by the manufacturer’s failure to install electronic stability control. Cronauer Law has handled stability and rollover cases involving narrow-track SUVs, fifteen-passenger vans, and light trucks.
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NHTSA uses the Static Stability Factor (SSF) as its primary indicator of rollover propensity. SSF is the ratio of half the track width of the vehicle’s axle to the height of the vehicle’s center of gravity above the ground. Higher numbers mean more stability; lower numbers mean more rollover risk.
Historic examples illustrate the principle. Many early Ford Explorer platforms had SSF values in the 1.04–1.07 range; a typical mid-size sedan is closer to 1.4. The difference in real-world rollover rate is dramatic.
The Bronco II, Explorer’s predecessor, was so unstable in development that it rolled over at 30 miles per hour on the test track. Ford engineers recommended widening the track. Internal documents in the AIEG archive show that the recommendation was rejected because of the production-schedule and tooling impact. In other markets—where regulatory pressure was different—Ford modified the suspension geometry, including outboard shock placement, to improve stability. The U.S. market did not see those changes until later platforms.
The defense in a stability case will spend significant resources arguing that the loss of control or the rollover initiated off-road, on grass or gravel, where consumer expectations are different and where the physics of tripping are inherently more aggressive. The plaintiff’s burden is to establish that the loss of control or, in many cases, the actual roll itself, began on the roadway.
The proof is reconstruction-driven. Yaw marks, scuff marks, gouge marks, debris fields, and final-rest positions, supported by EDR data and eyewitness testimony, place the vehicle in pre-roll dynamics on the asphalt. Where the manufacturer has tried to convert an on-road yaw and roll into an off-road “tripped” event, careful documentation routinely defeats the argument.
Electronic stability control monitors driver steering input, vehicle yaw rate, and lateral acceleration; if the vehicle is not following the path the driver is steering toward, ESC selectively applies individual wheel brakes and modulates engine torque to bring the vehicle back on track. ESC reduces single-vehicle, run-off-road and rollover crashes by a wide margin in real-world data.
FMVSS 126 has required ESC on light vehicles since model year 2012. Many manufacturers, however, made ESC available years earlier. Vehicles built between roughly 2003 and 2011 without ESC—especially SUVs and trucks—are strong failure-to-equip candidates.
Beyond geometry and electronics, certain stability cases involve specific chassis and suspension defects. Rear suspension instability in fifteen-passenger vans, for instance, has been documented for decades. NHTSA has issued repeated consumer advisories warning of fifteen-passenger van rollover risk under loaded conditions, particularly with rear-seated passengers. Other cases involve sway bar configurations, tire-and-wheel mismatches, or load-distribution decisions that materially affect rollover propensity.
Rollover stability cases routinely produce catastrophic outcomes: traumatic brain injury, cervical and thoracic spinal cord injury, multiple fractures, and death. The damages presentation typically includes life-care planning, vocational economics, and claims for past and future pain, suffering, and loss of enjoyment of life. Where punitive damages are recoverable, the documentary history of rejected stability fixes—particularly in the SUV cases—can be devastating.
Possibly. The defense will argue that off-road rollover is outside the manufacturer’s reasonable expectation. Plaintiffs respond by showing that the loss of stability initiated on-road and that the off-road excursion was the consequence, not the cause. We work this issue carefully on a fact-by-fact basis.
No. Modern SUVs with adequate track width, lower centers of gravity, and ESC are about as safe as comparable sedans. The cases we evaluate are typically older platforms—particularly 1990s and early-2000s narrow-track designs—that combined geometric instability with the absence of ESC.
The Static Stability Factor is one-half the vehicle’s track width divided by the height of its center of gravity. SSF is a single-number predictor of rollover propensity in untripped maneuvers. Lower numbers correlate with higher rollover rates.
Because widening the track would have required redesigning the assembly line and delaying production. Internal engineering records, available through the AIEG archive, show the trade-off being made explicitly. Ford eventually widened the platform—after years of rollover litigation.
It has been required on light vehicles since model year 2012 under FMVSS 126. Vehicles built before that date without ESC are evaluated for failure-to-equip claims based on what was feasible and standard at the time.
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If you were injured in any way–medically, emotionally, physically, in a car, at work, on the street–then you may have a case. Employers, companies, and individuals have a “duty of care.” This term refers to each person’s obligation to avoid actions or situations that endanger other people.
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