Rear-end instability at ~110 km/h over a road wave

Near loss of control at 110 km/h over a road wave (July 2026): one owner (Victor 🇷🇺) reported an alarming highway incident: driving at about 110 km/h, the car hit a wave/dip in the road surface, and the rear end "squeezed down and then released," after which the car kept bouncing hard — he had to actively fight the steering wheel for an extended distance to bring it back under control. He suspected general suspension fatigue/wear as the underlying cause ¹.

No such issue reported by another owner still on stock front suspension: replying in the same thread, a second owner (Che Guevara) said this had never happened to him. He specified that his own front suspension is still the original/stock setup, referencing an earlier, separate conversation in which he had told Victor he'd decided against replacing it — and that everything has been fine on his car so far ².

Open question — stock vs. modified suspension: the thread does not establish whether Victor's suspension was stock or already modified at the time of the incident, nor whether any specific worn component (e.g. shocks, bushings, springs) was the cause. Treat this as a reported symptom rather than a diagnosed fault; cross-reference the suspension noise diagnostic checklist and the shock absorbers card for related failure modes (worn dampers, bump-stop wear, cold-weather shock behavior) that could plausibly produce this kind of rear-end instability over a bump at speed.

Related pages

• Rear wheel hub bearing
• Rear springs — other donors, rod sizes, ride height
• Rear spring spacers and lift
• Rear pneumatic bellows — field reports and pressures
• Rear arm bushings — numbers and Mazda fit

Sources

This page is compiled from 2 community messages. Every fact carries a numbered reference to its original author and message.

Last updated: 2026-09-10