Lexus IS Rear Springs: Specs, Fitment & Common Faults
Hybrid and non-hybrid versions carry genuinely different weight, and the rear spring rate reflects that.
Illustration for editorial purposes
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A Part That Fails Quietly, Then Suddenly
On the Lexus IS, rear spring sag tends to creep in gradually over months, with little more than a slightly lower ride height to show for it, before ending suddenly at the coil's end with an audible clunk — worth remembering if one rear corner starts sitting noticeably lower than the other.
Lexus IS Rear Springs: OEM Part Number
| Petrol/non-hybrid, standard rate | Genuinely a different spring from the hybrid version below — confirm powertrain and side before ordering |
|---|---|
| Hybrid | A genuinely different spring rate from the non-hybrid version, reflecting the different weight distribution of the hybrid drivetrain |
| F Sport, where fitted | A genuinely different, stiffer spring from standard trims |
The Lexus IS's rear springs should always go in as a pair — fitting one new spring alongside an old, sagged one on the opposite side leaves the car sitting unevenly and biases how it handles.
Lexus IS Rear Springs: What It Does
On the Lexus IS, supporting the rear end's weight and absorbing the first impact of a bump is the rear coil spring's job, working alongside the shock absorber rather than doing its job for it. A sagged or broken spring drops ride height, can throw off headlight aim, and in serious cases fails an MOT outright.
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Lexus IS Rear Springs: Warning Signs, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Rear Springs Guide for symptoms of a failing spring, confirming fitment against your VIN, and OEM vs aftermarket guidance.
More Lexus Rear Springs
The same part, covered across other Lexus models.