Model S/X: rear toe links and bushings — well-known weak point

Summary

On Model S and X, the rear toe links and the upper camber arm with bushing are a known weak point. With time and mileage the rubber in the bushings hardens and sags, wheels go negative camber and/or toe wanders under load. From the outside this shows as inner-edge tire wear + sometimes clunk/click on launch and regen. The link is hard to access — replacement is complex (often requires lowering the rear cradle or battery), hence the serious dealer prices.

Symptoms / Diagnosis

• Tire chewed from inside with formally-normal alignment on the rack ("normal" under the car's weight ≠ "normal" under traction).
• Slight nose-dive/"pull" under throttle or regen.
• Knock/click on a sharp link reversal (start-stop).
• On the alignment rack the rear camber is out of spec, and doesn't get into spec with normal adjustment — factory link travel is ±3.5 mm.
• The front edge of rear tires is more worn than the rear edge — typical sign of toe drift.

What to do

1) Diagnosis.

• Alignment rack with printout.
• On the lift, rock with a pry bar at the toe link and camber arm mounts — see/hear play in the bushings.
• Also check the upper camber arms (camber arms) — on pre-refresh they're non-adjustable, sag, and wheels go "house-shape" over time (see chat).

2) Replacement options.

In chat one owner (#152083): "Model S chews tires from inside in the rear. Upper camber arm isn't adjustable. Wheels gradually go house-shape due to sagging bushings. Either replace the camber arms — they're cheap, $50, or install adjustables".

3) AliExpress lottery. Bushings for S/X can be found at $10–30 each — but quality varies. Brands CTR/RBI/Febest — usually OK, unbranded — may or may not work. On full arms look at the part number with revision letter (-A, -B, -C) — Tesla had revisions.

Belarus budget

Parts:

• One bushing (aftermarket): $10–30.
• Full bushing kit per axle (polyurethane): $120–200.
• OEM toe link assembly: $80–180 each.
• Adjustable n2itive TSX-2 links: ~$300–400 kit.

Labor (Minsk, ~$50/h):

• Toe link replacement without subframe drop (via cut/bolt workaround): 2–3 h/side → ~$100–150.
• Bushing replacement with press: 1–2 h per unit → ~$50–100.
• With rear cradle/battery drop: 5–8 h → ~$250–400 (plus materials).
• Alignment after: $40–70.

Total range:

• Budget (one bushing + labor): ~$80–150 per corner.
• Mid-range (pair of arm assemblies + labor): ~$300–500.
• Full rear suspension overhaul (bushing + camber + toe link, both sides): ~$500–700.

DIY notes

• Disconnect HV and 12V before any work near the rear cradle.
• On S/X, the toe link bolt sometimes hits the subframe — there's a trick of cutting the bolt with a hacksaw and installing a new one from the other side (see TMC). Without it, many shops quote prices "as if subframe-drop."
• Compress polyurethane/press the bushing — need a press or a good clamp with the right mandrels.
• After any work on the rear links alignment is mandatory — Tesla without exact angles starts to chew rubber fast.
• On pre-refresh Model S, the upper arm is non-adjustable — if camber has drifted, either install new arms, or install adjustables.

Links / Sources

• TMC — defective rear toe link, 2013 P85: https://teslamotorsclub.com/tmc/threads/2013-p85-defective-rear-toe-link.238990/
• TMC — rear knuckle bearings/bushings replacement: https://teslamotorsclub.com/tmc/threads/rear-knuckle-bearings-bushings-replacement.349071/
• TMC — adjustable camber bushings group buy: https://teslamotorsclub.com/tmc/threads/rear-adjustable-camber-bushings-for-model-s-x-group-buy.110881/
• Tesla Service Manual — Toe Link Assembly Rear (Palladium): https://service.tesla.com/docs/ModelS/ServiceManual/Palladium/en-us/GUID-4E3BC26C-8661-4CE3-BF25-BCBD3F0C1228.html
• n2itive TSX-2 adjustable rear toe arms: https://n2itive.me/product/n2itive-tsx-2-rear-toe-link-arms-for-tesla-model-s-x/
• YouTube — In-Depth Review Tesla Model S Rear Toe Link: https://www.youtube.com/watch?v=Rz-DF1U5IJE

Community experience

From the TESLA owner's group BELARUS chat: on inner-edge rear tire wear on S and the non-adjustable upper arm — several confirmations.

Additional observations:

1. Inner-edge wear on S without visible camber on the rack — almost always sagging bushings in the upper arm; on Palladium the arm is already adjustable (#152083, #152084).
2. On pre-refresh there are no adjustable arms, but tuning with adjustment has appeared — recommended for the next car right away (#152083).
3. The bushing topic on S/X is close to that on M3/Y — "floating bushings" in the rear knuckles/links break and leak like a grease syringe; in chat there are part numbers for M3, for S/X it's safer to go from the arm-as-an-assembly direction.