22 September 2026
If your car suddenly feels slower, heavier or less responsive, it is easy to assume there is something wrong with the engine. However, the problem may be much closer to the road.
Underinflated tyres, poor wheel alignment, uneven tyre wear and other wheel-related faults can all create additional resistance. This means your engine must work harder to keep the car moving, potentially making acceleration feel less responsive and affecting your fuel economy.
Before assuming the worst, here are the tyre and wheel issues worth checking first.
“Sluggish” can mean different things to different drivers. You might notice that:
Pay attention to when the problem happens. Does the car feel heavy all the time, only at higher speeds or mainly when accelerating? These details can help identify whether the problem is caused by an issue with the tyres, wheels, brakes or engine.
Low tyre pressure is one of the simplest explanations for a car feeling heavy or slow.
When a tyre is underinflated, more of its surface comes into contact with the road. This increases rolling resistance, meaning the engine must use more energy to move the vehicle. As a result, acceleration can feel less responsive and the car may consume more fuel.
Other signs of low tyre pressure include:
Check your tyre pressure when the tyres are cold and adjust them according to the vehicle manufacturer’s recommendations. You can usually find the recommended tyre pressure information printed inside the driver’s door, inside the fuel flap or in the vehicle handbook.
If a tyre repeatedly loses pressure, it may have a puncture, damaged valve or poor seal and should be professionally inspected.
Tyres do not always wear evenly. Problems with alignment, suspension or inflation can cause certain sections of the tread to wear faster than others.
Unevenly worn tyres can affect grip, steering response and how smoothly the car travels. You may also notice increased road noise, vibration or a general feeling that the car is not as responsive as usual.
Check the whole tyre for:
The UK legal minimum tread depth is 1.6 mm across the central three-quarters of the tyre and around its entire circumference. However, you should not wait until your tyres reach the legal limit if their condition is already affecting the vehicle’s performance.
Never drive on a tyre with a bulge, exposed cords or serious structural damage. Have it checked and replaced as soon as possible. Need new tyres? You can buy tyres online by entering your tyre size here.
Wheel alignment determines the angle at which your wheels meet the road. Driving over potholes, clipping kerbs and general wear can affect the angle of alignment.
When the wheels are misaligned, friction known as rolling resistance is increased. This can make the car feel less responsive. Possible signs of misalignment include:
Correcting the alignment can improve handling while helping to prevent unnecessary tyre wear. If the car has started pulling to one side or feels different after hitting a pothole, it is worth arranging an alignment check.
Wheel balancing ensures that weight is distributed evenly around each wheel and tyre. Even a small imbalance can become noticeable once the wheels begin rotating at speed.
Common wheel balancing symptoms include:
If you notice the steering wheel shaking when driving, particularly at motorway speeds, an imbalanced front wheel could be responsible. Vibration felt mainly through the seat may point towards an issue with one of the rear wheels.
An imbalance may not directly cause a major loss of engine power, but the resulting vibration and reduced smoothness can make the car feel less stable and responsive. You can read our guide to why your car vibrates while driving for more information about vibration-related faults.
Sometimes, the resistance is not coming from the tyres themselves. A sticking brake calliper can prevent a brake pad from releasing fully from the disc, creating constant friction while you drive.
This can make the car feel as though it is being held back. You might also notice:
Binding brakes can become extremely hot and may damage other components. If you notice a burning smell, smoke or excessive heat from a wheel, stop somewhere safe and seek professional assistance.
Wheel bearings allow the wheels to rotate smoothly. As a bearing begins to wear, it can create friction and affect the way the car feels on the road.
A failing wheel bearing often causes a humming, rumbling or grinding sound that changes with the vehicle’s speed. You may also notice looseness in the steering or vibration through the vehicle.
Wheel-bearing problems should not be ignored. The symptoms can become progressively worse and may eventually affect the safety and stability of the car.
If there are no issues with tyre pressure tread, wheel alignment or balancing then another mechanical component must be responsible for causing your vehicle to feel unsafe or unresponsive.
Possible causes include:
An engine-related problem is more likely if the car struggles to accelerate, runs unevenly while stationary, displays a dashboard warning light or produces unusual noises.
A diagnostic check can help identify the fault instead of relying on guesswork.
Yes. Underinflated tyres, misaligned wheels and binding brakes can all increase rolling resistance. The engine then needs to use more fuel to maintain the same speed.
If you are using more fuel but your usual journeys have not changed, checking tyre pressure and tyre condition is a sensible place to start.
That depends on the symptoms and their severity.
Arrange an inspection promptly if the car feels noticeably different but remains stable and no warning lights are showing. However, you should stop driving when it is safe to do so if:
Continuing to drive could worsen the problem or put you and other road users at risk.
Setyres can inspect your tyres and wheels, identify signs of damage or irregular wear and recommend the appropriate next steps. If your tyres need replacing, you can buy tyres online by entering your registration or tyre size.
Find your nearest Setyres centre and arrange a professional check to help your car feel smooth, responsive and comfortable again.
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Typical wheel balancing symptoms include steering-wheel vibration, shaking that worsens at higher speeds, uneven tyre wear and vibration felt through the seats or floor.
Unevenly worn or damaged tyres can reduce grip and affect braking and handling. Although they may not reduce the engine’s actual output, they can make the vehicle feel less responsive and stable.
Not every tyre, wheel or mechanical problem triggers a dashboard warning light. Incorrect tyre pressure, misalignment, wheel imbalance and binding brakes can all affect how the car drives without immediately activating a warning.