How to Check Your Car's Suspension

how-to-check-your-car-s-suspension

You can check your suspension yourself in about 10–15 minutes using a bounce test, a wheel-height comparison, and a visual check of your shocks, bushings, and tie rods. Here’s how to do each step, what the results mean, and the warning signs that tell you it’s already time to book an inspection.

How Your Car's Suspension Actually Works (60-Second Explainer)

It sounds more complicated than it is.

Your springs compress to soak up the impact when you hit a bump. The shock absorbers (or struts, depending on the car) control the rebound — so you settle back down instead of bouncing along the road for the next hundred metres.

And your control arms and linkages hold the wheels in the right position through all of that movement. That’s what keeps your alignment and handling consistent.

Once one of these starts to wear out, the whole system stops doing its job. That’s exactly what the test below is built to catch, before it turns into something more expensive.

How to Check Your Suspension Yourself: 5 Steps

At Mark Jackson Automotive, we always believe in safety first.

Check your manual for the correct jack points before lifting the car. Lifting a car in the wrong spot can damage it, and it’s not safe to work under.

The Bounce Test

Push down hard on each corner of the car.

Bonnet first, then the boot, and let go. On a suspension that’s in good shape, the car settles back down after one bounce. If it keeps bobbing for two or three cycles after you let go, your shocks or struts have had it and aren’t controlling the rebound as they should. 

That rebound is what keeps your tyres planted on the road. So a worn shock isn’t just a comfort issue — it affects how well the car handles and stops.

Compare Your Ride Height

Park on level ground. Measure the distance between the top of each tyre and the guard.

If one side sits more than about 2.5cm lower than the other, you’re probably looking at a sagging spring or a worn component on that side. Springs weaken gradually over years, so it’s easy to miss unless you’re actually measuring. Also, check which side it is — since that’s where you’ll want to focus the rest of the check. 

While you’re down there, it’s worth glancing at the tyre on that side too (since uneven ride height often means uneven wear).

Check for Leaks or Damage on the Shocks/Struts

Have a look at where each shock or strut mounts to the car, and run your eye over the body of the unit itself.

Any oily film or residue means the seal’s gone. Once that happens, the shock can’t do its job properly anymore — it’s a replacement, not a repair. 

Leaks tend to start small and get worse the longer they’re left, so catching one early can save you from a bigger job down the track.

Inspect the Rubber Bushings

Bushings are the rubber pieces cushioning the joints between your suspension’s metal parts.

Going grey with age is fine. Cracking or tearing isn’t. A cracked bushing means that joint’s no longer cushioned, and you’ll hear it before you feel it — extra noise, a rougher ride. 

If one’s torn through or missing entirely, don’t drive on it. Get it looked at first.

Check the Tie Rod Ends (and Take It for a Short Test Drive)

Worn tie rod ends feel like vague, sloppy steering — a dead spot where the wheel doesn’t quite respond.

With the car still up, grab each front tyre top and bottom and rock it in and out. Any clunking or looseness points to a worn tie rod end. Back on the ground, take it for a short drive. Pulling to one side, wandering on straight roads, steering that feels loose — all worth getting checked.

Not sure what you’re looking at after all this? Bring it in for a suspension repair on the Gold Coast, and we’ll take a look.

What Your Results Mean — and How Urgent It Is

What you noticed

Likely cause

How soon to act

Bounces more than once or twice

Worn shocks or struts

Book an inspection soon

One side sits noticeably lower

Sagging or broken spring

Get it checked promptly

Oily residue on shocks/struts

Fluid seal failure

Needs replacing — don’t delay

Cracked/torn bushings

Worn suspension bushings

Book now — a missing bushing means stop driving

Vague or “dead” steering feel

Worn tie rod ends

Get it checked promptly — affects control

Nose-dives hard under braking

Worn front shocks/springs

Book soon — affects stopping distance

Signs Your Suspension Needs Attention (Even If You Haven't Tested It Yet)

Even if your test came back clean, keep an eye out for these over time:

  • Tyres wearing unevenly — often shows up by around 10,000km if something’s out of alignment or worn. Check the tread across the whole tyre, not just the middle. Wear on one edge usually means alignment. Wear that’s patchy or cupped points more toward the shocks or struts themselves.
  • The car pulling to one side on a flat, straight road — take your hands off the wheel briefly (only if it’s safe to) and see which way it drifts. A consistent pull, especially after hitting a pothole or kerb recently, is worth getting checked sooner rather than later.
  • More bounce than usual after speed bumps, which tends to creep in once shocks or struts pass roughly 50,000km. It happens gradually, so most people don’t notice until it’s fairly obvious. If the car feels like it’s still moving after the bump’s well behind you, that’s your shocks losing control of the rebound.
  • Clunks, rattles, or knocking over bumps — usually bushings or a loose joint somewhere. These noises tend to get worse over time rather than go away on their own, so it’s worth getting them looked at before something wears through completely.
  • Diving hard under brakes (this also wears your pads and discs unevenly over time). If the front of the car dips noticeably every time you brake, worn shocks are often the reason. Left unchecked, it puts extra strain on your brakes too, so you end up paying for two problems instead of one.
  • Vibration through the steering wheel above about 60km/h — more often tie rods, ball joints, or wheel bearings, but worth checking the whole front end together. Vibration that gets worse the faster you go is a good clue it’s suspension or steering related, rather than something like an unbalanced tyre.

Why Gold Coast Roads Wear Suspension Faster

Southport and the rest of the Gold Coast aren’t exactly gentle on a car’s suspension. 

There’s a speed hump outside just about every shopping centre now. Sometimes two or three before you’ve even left the car park. Every one of them means your suspension compresses and rebounds. 

On its own, no drama. Over months and years, it wears bushings and shocks down quicker than most people realise.

Head towards the beach, and it’s a different problem. A lot of the access roads down near the sand aren’t sealed — rutted, uneven, sometimes just packed sand and loose gravel. Every dip sends a jolt through your springs and shocks. Sand also gets into places it shouldn’t, bushings and seals included, which speeds things up even more.

Then there’s the hinterland. Tamborine, Springbrook, the winding roads through the hills — gorgeous to drive, but hard on a car. Tight corners, constant elevation changes, roads that camber and shift your weight side to side. Your suspension’s working overtime just to keep things planted through all of it.

Individually, none of it seems like much. It’s only once you add it all together that the wear really shows. And it’s exactly why the checks above matter more if you’re driving around here than they might somewhere flatter and more built-up.

As a leading mechanic on the Gold Coast, the team at MJ Auto routinely checks for the specific wear and tear caused by local roads.

Simple Ways to Make Your Suspension Last Longer

  • Keep your tyres at the right pressure — running low puts extra strain on everything else
  • Don’t overload the car past its rated capacity
  • Ease off over speed humps and potholes instead of powering through them
  • Get it checked as part of your regular service, not just when something starts to feel off
  • Stay on top of wheel alignment and balancing
  • Don’t wait to replace damaged parts — if you see a problem, fix it right away before it gets worse.

What a DIY Check Can't Tell You

Quite honestly, these checks will catch the obvious stuff — but they’ve got limits. 

Things like precise alignment angles, wear inside the shock valve, or bushings degrading slowly rather than obviously cracked — you’re not going to catch those from a driveway in fifteen minutes.

A proper suspension inspection at Mark Jackson Automotive covers all of that: 

  • A full visual check
  • A road test, hands-on testing of the components
  • A written report so you know exactly what’s going on.


If your car failed any part of the test above, or you’re just not sure,
book a suspension inspection on the Gold Coast rather than guessing.

FAQs

Bouncing excessively after bumps, uneven tyre wear, pulling to one side, or a ride that’s noticeably rougher and noisier than it used to be. The test above will catch most of it.

Depends on what’s causing it. A bit of noise from ageing bushings usually isn’t urgent. A bouncy ride, a pull to one side, or a torn bushing is a different story — get that looked at before your next drive.

Team MJ Auto recommends at least once a year as part of a routine service, or more often if you’re regularly on rough or unsealed roads.

Yes. Worn shocks let the car’s weight shift more than it should under braking. That means less even grip and a longer stopping distance.

Yes. The bounce test, ride height comparison, and test drive don’t need a jack at all. You’ll only need to lift it if you want a closer look at the shocks, struts, or bushings, and if you do, use the jack points in your owner’s manual.

Depends on the vehicle and what needs checking, so the easiest way to get a real number is to book one in — book a suspension check with Mark Jackson Automotive, and we’ll give you a clear quote upfront.