# Shocks, Struts and Suspension Repair

> Bouncing, clunks or nose dive when braking? We inspect shocks, struts and suspension parts, show you photos, and road-test the fix. Book a check.

Source: https://goodyearelitetireupland.com/services/suspension-shocks-struts/  
Last updated: 2026-09-22  
Business: Goodyear Elite Tire Upland, 1775 W Foothill Blvd, Upland, CA 91786, (909) 608-7699

**TL;DR:** Worn **shocks and struts** let the car bounce, dive and wear tires unevenly. We inspect every **suspension joint**, show photos, and follow repairs with an **alignment check**.

Shocks and struts control how the body moves over bumps and during braking and turning. When they wear, the car bounces, dips, sways and wears tires in patches. We inspect shocks, struts, mounts, bushings, ball joints, tie rods and sway bar links, photograph the worn parts, and check alignment after any repair that changes it.

## How do you know if your shocks or struts are worn?

Worn shocks and struts show up as extra bouncing after bumps, nose dive under braking, body lean in turns, and a floaty feel at highway speed. You may also see oil on the shock body or cupped patches on the tires. The change is gradual, which is why many manufacturers suggest an inspection around 50,000 miles rather than waiting for a symptom.

Common signs:
- The car keeps bouncing after a dip or speed bump
- The front end dives hard when you brake
- The rear squats when you accelerate or carry weight
- The body leans or sways on freeway ramps
- Oil or fluid on the outside of a shock or strut
- Cupped or scalloped [tire wear](https://goodyearelitetireupland.com/tires/tire-wear-patterns/)
- A clunk or knock over bumps

Worn dampers also make stopping distances and emergency maneuvers less stable, because the tires do not stay pressed to the road as well.

## What is the difference between shocks and struts?

Both control spring motion, but a strut is also a structural part of the suspension. It holds the spring and supports the steering knuckle, so replacing it changes alignment angles. A shock only damps motion and does not support the vehicle's weight. Many cars have struts in front and shocks in back; many trucks use shocks at all four corners.

| | Shock absorber | Strut |
|---|---|---|
| Damps spring motion | Yes | Yes |
| Supports weight and locates the wheel | No | Yes |
| Affects alignment when replaced | Rarely | Usually |
| Common on | Truck and many rear suspensions | Front of most cars and crossovers |

Many struts are sold as complete assemblies with the spring and mount already installed, which saves labor and replaces worn mounts at the same time. We explain the choice on the estimate.

## What causes clunks and knocks over bumps?

Clunks usually come from worn joints and links rather than the shocks themselves. Sway bar links, control arm bushings, ball joints, tie rod ends and strut mounts all wear and develop play. We check each one with the vehicle raised and loaded, because some play only shows under weight. A loose ball joint or tie rod is a safety item.

What we inspect:
- **Sway bar links and bushings:** the most common source of a light clunk
- **Control arm bushings:** cracked rubber lets the arm shift under braking
- **Ball joints:** play here can let the wheel wander, a need item
- **Tie rod ends:** loose steering, uneven wear, wandering on the freeway
- **Strut mounts and bearings:** noise when turning the wheel at low speed
- **Springs:** broken coils or sagging ride height

Some noises that sound like suspension come from a [wheel bearing](https://goodyearelitetireupland.com/services/wheel-bearing-service/) or a CV axle, so we road-test to confirm before quoting.

## Should shocks and struts be replaced in pairs?

Yes, on the same axle. Replacing only one side leaves the car with different damping left to right, which affects handling and braking stability. Both fronts or both rears is the normal recommendation. All four is only needed when all four are worn, and the estimate shows the condition of each corner with photos.

After strut replacement or any work on steering and suspension joints, alignment angles change. We check alignment and correct it so your tires do not wear unevenly. The [wheel alignment](https://goodyearelitetireupland.com/tires/wheel-alignment/) page explains the printout you receive.

If you tow or carry heavy loads, ask about heavy-duty or load-assist options. They are a want, not a need, unless the vehicle sags below its normal ride height.

## Do suspension changes affect driver assistance systems?

They can. Lane-keeping cameras and radar-based cruise systems rely on the vehicle sitting at its designed height and angle. Replacing struts with standard parts at stock height usually keeps things in range, but lift kits, lowering springs or sagging springs can shift the sensors' view. We tell you when a vehicle may need a calibration check after suspension work.

If your vehicle needs a calibration we cannot perform in-house, we say so before you approve the job, so you are not surprised afterward.

## What does a suspension inspection check, and why?

A suspension inspection checks every part that holds the wheel in place or controls how it moves, because a worn part in one spot wears out the parts around it. We look for leaks, play, cracked rubber and sagging, and we check with the weight on the wheels and off them. Here is what each check is for.

| What we check | How we check it | Why it matters |
|---|---|---|
| Shocks and struts | Bounce test, leak check, road feel; many makers suggest a look at about 50,000 miles | Tire contact, braking stability |
| Strut mounts | Turn the wheel, listen and watch the mount | Noise, steering feel, alignment |
| Ball joints | Pry for play with the load set correctly | A failed joint can let the wheel separate |
| Tie rod ends | Check for play at the wheel | Steering precision and toe wear |
| Control arm bushings | Look for cracks and movement | Stability under braking |
| Sway bar links | Check for looseness and clunks | Body roll and noise |
| Coil and leaf springs | Ride height measured against the maker figure, plus cracks and broken coils | Load capacity and alignment |
| Tire wear | Tread depth in 32nds at three points across each tire | Tells us which parts are wearing |

Tire wear is part of the evidence. Cupping and scalloping point to dampers, inner or outer edge wear points to alignment or joints, and our [tire wear patterns](https://goodyearelitetireupland.com/tires/tire-wear-patterns/) page shows what each looks like.

## How do local roads and loads wear out suspension?

Suspension wears fastest on vehicles that see lots of dips, speed humps, driveway aprons and heavy loads. Around here, that means stop-and-go traffic on Foothill Blvd, freeway expansion joints on the 10 and the 210, and pickups and vans that carry tools, gear or a trailer most days. Heat also hardens rubber bushings over time.

Where the wear comes from:
- **Stop-and-go traffic:** each hard stop pitches the nose forward and loads the front struts.
- **Speed humps and driveway dips:** repeated sharp hits wear strut mounts and sway bar links.
- **Freeway joints:** steady impacts at speed work ball joints and tie rod ends.
- **Loaded beds and cargo areas:** constant weight sags springs and tires out rear shocks. Our [work trucks](https://goodyearelitetireupland.com/vehicles/work-trucks/) page covers this in more detail.
- **Towing:** tongue weight pushes the rear down and lightens the front, which changes steering feel. Pair a suspension check with a [hitch and tow package inspection](https://goodyearelitetireupland.com/services/hitch-tow-package-inspection/) before a trip.

### Common mistakes
- Replacing shocks but leaving loose sway bar links, so the clunk stays.
- Skipping the alignment after strut work, then wearing out new tires.
- Adding air bags or spacers to hide sagging springs instead of fixing them.

## Needed now versus can wait

### Needed now
- Ball joint or tie rod with play beyond the maker allowance, which is measured in thousandths of an inch
- Broken coil spring
- Strut or shock leaking heavily
- Suspension noise paired with wandering steering

### Can wait
- Tired shocks with no leaks and mild bounce
- Sway bar links with slight noise but no play
- Upgraded heavy-duty shocks for occasional towing
- Strut mounts with minor noise at parking speed

## Our process

1. **Road test:** We drive the car to hear and feel the bounce, clunk or wander you described.
2. **Lift inspection:** We check shocks, struts, mounts, bushings, joints and links for leaks and play.
3. **Photos and estimate:** You see photos of the worn parts and a written estimate by axle, need and want marked.
4. **Repair:** Approved parts replaced in axle pairs and torqued to the vehicle foot-pound specs with the suspension at ride height.
5. **Alignment check:** We check and set alignment when the repair affects it and give you the printout.
6. **Final road test:** We confirm the noise is gone and the car tracks straight before returning it.

## What's included

- Road test before and after
- Shock and strut leak and bounce check
- Ball joint, tie rod and bushing inspection
- Sway bar link and mount check
- Photo inspection
- Written estimate by axle
- Alignment check in degrees against the maker range after strut or steering work

## Frequently asked questions

### How do I know if my shocks are worn?

Look for extra bouncing after bumps, nose dive under braking, sway on ramps, fluid on the shock body, or cupped tire wear. A road test and lift inspection confirm it. We show you photos of any leaks or damaged parts before quoting.

### Do I need an alignment after new struts?

Usually, yes. Struts locate the wheel, so replacing them moves camber and toe, both measured in degrees. We check alignment after strut work and reset it inside the maker range so your tires wear evenly and the car tracks straight.

### What is that clunk when I go over bumps?

Often a worn sway bar link, but control arm bushings, ball joints, strut mounts and tie rods can also clunk. We inspect each part with the vehicle raised and loaded, and road-test to separate suspension noise from wheel bearing or axle noise.

### Can I replace just one shock?

We recommend replacing shocks and struts in pairs on the same axle so both sides damp equally. Different damping side to side affects handling and braking. You only need all four when all four are worn.

### Are worn shocks a safety problem or just a comfort problem?

Both. Worn shocks and struts let the tires lose firm contact over bumps, which can lengthen stopping distances and make emergency swerves less stable. They also wear tires faster. Mild wear with no leaks can often wait a little; heavy leaks or wandering steering should not.

### Can worn suspension make my new tires wear out early?

Yes. Worn dampers cause cupping, and loose joints or bushings change alignment angles as you drive, which wears edges. We check suspension parts before an alignment so the new settings hold and your tires last as long as they should.

## Related pages

- https://goodyearelitetireupland.com/tires/wheel-alignment/
- https://goodyearelitetireupland.com/tires/tire-wear-patterns/
- https://goodyearelitetireupland.com/about/resources/guides/suspension-alignment/
- https://goodyearelitetireupland.com/services/power-steering/
- https://goodyearelitetireupland.com/contact/book-appointment/

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Call (909) 608-7699 or book at https://goodyearelitetireupland.com/contact/book-appointment/