Parts for your 2015 Toyota Bb-Strut mounts

2015 Toyota bB strut mounts: purpose, care, and when to replace

Based on technical references such as Toyota’s factory service data and parts catalogue for the QNC2# bB series (2005–2016), the 2015 Toyota bB runs a MacPherson strut front suspension with an upper support/strut mount. That means strut mounts are absolutely fitted and relevant on this model.

On the 2015 Toyota bB, the strut mounts (often called strut tops) sit at the top of the front struts, tying the suspension to the body. They do two big jobs: they isolate vibration and noise from the cabin with a rubber insulator, and they provide a bearing surface so the strut can rotate smoothly as the wheels steer. In short, they keep the ride quiet and the steering feel tidy, all while handling hefty vertical loads from daily driving on Aussie and Kiwi roads.

Over time, the rubber can harden or crack and the bearing can dry out or develop play. That can lead to clunks over bumps, vague steering, or a groan when turning at low speed. Left too long, worn mounts can speed up strut wear and mess with tyre life.

• Common signs of wear: knocking over speed humps, notchy steering when parking, a spring “twang” as the wheel straightens, front-end vibration, and uneven front tyre wear.
• Visual clues: perished rubber around the top hat, rust staining at the tower, or a misaligned top plate.

As part of routine servicing, the strut mounts on a 2015 bB deserve a look every 10,000–15,000 kilometres or at least once a year. A quick check for rubber condition, bearing smoothness while steering, and any free play at the top of the strut goes a long way.

• Best practice is to replace mounts in pairs (left and right) and fit new bearings where separate.
• Consider renewing related wear items at the same time: dust boots, bump stops, and upper spring insulators.
• A wheel alignment is strongly recommended after any front strut or mount work.
• Use quality OE or reputable aftermarket mounts, torque fasteners to spec and compress springs with proper gear.
• Expect roughly 1.5–2.0 hours per side labour on a clean car, add time if hardware is corroded.

Look after the strut mounts on a 2015 Toyota bB and it’ll repay the favour with quieter, sharper, more confidence-inspiring steering and better tyre life.

FAQs

How long do strut mounts last on a 2015 Toyota bB?

In typical Australian and New Zealand conditions, many see 80,000–150,000 km before they get noisy or loose, but it depends on road quality, climate, and load. If new struts are going in, it’s smart value to replace the mounts at the same time.

Do they need a wheel alignment after replacing strut mounts?

Yes. Any work that disturbs the front struts can shift camber and toe. A proper alignment resets steering centring and protects tyre wear.

Can worn strut mounts cause a WOF or roadworthy fail?

They can. Excess play, knocking, or split rubber that affects steering and suspension integrity may lead to a Warrant of Fitness (NZ) or roadworthy (AUS) failure. If in doubt, have them inspected and replaced before testing.