My tyres need regular attention because they are the vehicle’s only contact with the road. Correct pressure, adequate tread and an undamaged tyre casing support predictable steering, braking and wet-weather grip, while neglect can increase fuel use and shorten tyre life. A useful routine is simple: check pressures when the tyres are cold at least monthly and before a long journey, inspect the tread and sidewalls at the same time, and investigate any vibration, pulling or repeated pressure loss promptly. The correct values and tyre sizes are specific to your vehicle, so use the manufacturer’s tyre-pressure placard or handbook rather than relying on the number printed on the tyre sidewall.
A tyre check takes only a few minutes if you follow the same sequence every time. Park on level ground where possible and inspect the tyres in good light. If the car has been driven recently, wait until the tyres are cold before setting pressure; driving warms the air inside and gives a higher reading.
If one tyre is consistently lower than the others, do not keep topping it up indefinitely. A puncture, leaking valve, damaged wheel rim or bead leak may be responsible. A tyre professional can inspect it properly and advise whether a repair is suitable.
Under-inflation makes a tyre flex more as it rolls. That can increase heat build-up, wear the outer shoulders faster and make the vehicle feel less precise. It may also increase rolling resistance, which can hurt fuel economy or reduce an electric vehicle’s driving range. Severe under-inflation can damage the tyre internally, even if it is reinflated later.
Over-inflation is not a money-saving substitute for the recommended setting. It can make the ride harsher, reduce the amount of tread in contact with the road and encourage wear through the centre of the tread. The goal is not the highest pressure you can safely put in the tyre; it is the pressure specified for your car’s load and operating conditions.
| Condition | What you may notice | Likely effect on the tyre | What to do |
|---|---|---|---|
| Pressure below recommendation | Soft or vague steering, tyre-pressure warning, poorer economy | Shoulder wear, excess heat and possible internal damage | Set cold pressure to the vehicle recommendation and check for a leak |
| Pressure above recommendation | Firmer ride, reduced comfort over rough surfaces | Centre tread can wear faster; contact patch may be reduced | Reduce to the specified cold pressure |
| Correct pressure but one tyre keeps losing air | Repeated need to inflate the same tyre | Risk of running under-inflated and damaging it further | Arrange a puncture, valve and rim inspection |
| Uneven pressure side to side | Possible pull or inconsistent response under braking | Uneven wear and compromised balance | Correct all pressures, then assess alignment or other faults if symptoms remain |
Tyre pressure can change with ambient temperature, so a reading that was correct months ago may no longer be right. Check it routinely rather than waiting for a dashboard warning. A tyre-pressure monitoring system is useful, but it may only alert you after a meaningful pressure difference or loss has occurred.
Tread channels water away from the contact patch. As tread gets shallower, the tyre has less ability to clear standing water, increasing the chance of reduced wet grip and aquaplaning. Legal minimum tread rules vary by country, so confirm the requirement where the vehicle is registered and driven. Do not treat the legal limit as a performance target, particularly if you regularly drive in heavy rain, cold conditions or on roads where surface water gathers.
Many tyres have tread-wear indicators: small raised bars built into the main grooves. When the surrounding tread is level with these bars, the tyre has reached its indicator depth and should be replaced. A simple tread-depth gauge gives a clearer reading and lets you compare several points around each tyre.
Measure or inspect the inner, centre and outer portions of the tread at several points around the tyre. One edge may be close to worn out while the centre still appears acceptable. Look for these patterns:
Wear patterns are clues, not final diagnoses. Correcting the pressure alone will not restore worn tread, and fitting new tyres without addressing an alignment or suspension fault can lead to the same premature wear on the replacements.
Some damage is obvious, but some is easy to overlook. A tyre can lose strength after a hard pothole impact or kerb strike without immediately going flat. Stop driving and seek advice if you see a sidewall bulge, a deep cut, exposed cords, a split, or a large deformation. These conditions can indicate structural damage and are not suitable for a casual repair.
A screw or nail in the tread does not automatically mean the tyre must be replaced, but it should be assessed before removal. Pulling out the object can turn a slow leak into a rapid deflation. Repairs are generally more likely to be considered where damage is in the central tread area and the tyre has not been driven significantly while flat, but the final decision depends on the tyre’s condition and the repair standards that apply locally.
Tyre rotation can help equalise wear where the vehicle manufacturer permits it, but the appropriate pattern depends on whether tyres are directional, staggered in size, or fitted to particular wheel positions. Follow the handbook’s rotation guidance. Do not move directional tyres to the opposite side unless they are removed from the wheel and refitted in the correct rolling direction.
Wheel alignment concerns the angles at which the wheels meet the road. It is worth checking after a significant pothole or kerb strike, after suspension or steering work, or when the vehicle pulls, the steering wheel sits off-centre on a straight road, or tread wear is uneven. A car can drive reasonably straight and still have alignment angles that shorten tyre life.
Wheel balancing addresses uneven weight distribution around the wheel and tyre assembly. A vibration felt through the steering wheel or seat at certain road speeds can be a sign of imbalance, although it can also have other causes. Ask for diagnosis rather than assuming balancing is the only answer.
| Service | Best suited to | Main benefit | Important limitation |
|---|---|---|---|
| Pressure adjustment | Routine monthly care or changing load conditions | Supports tyre life, handling and efficiency | Will not fix existing damage or alignment-related wear |
| Tyre rotation | Vehicles with compatible tyre sizes and non-directional fitment, where approved | May spread wear more evenly | Does not correct a mechanical or alignment problem |
| Wheel alignment | Pulling, off-centre steering, uneven edge wear or impact damage | Addresses wheel-angle settings that affect wear and stability | Worn suspension parts may need repair first |
| Wheel balancing | Speed-related vibration after tyre work or lost wheel weights | Helps the wheel rotate smoothly | Does not repair a bent wheel, damaged tyre or suspension fault |
Start with the tyre size, load index and speed rating approved for the vehicle. This information appears in the handbook, tyre placard and on the tyre sidewall. A sidewall marking such as 225/45 R17 describes the tyre’s nominal width, profile, construction and wheel diameter, but it does not by itself confirm that a tyre is suitable for your vehicle. Load and speed capability matter too.
Choose tyres based on how and where you drive. A driver who covers long motorway distances may prioritise comfort, wet grip, noise and wear characteristics differently from someone who mainly takes short urban trips. If winter conditions are common where you live, a dedicated seasonal solution may be more appropriate than relying on an unsuitable all-season compromise. Check local seasonal tyre rules before deciding.
Replacing a matched pair is often the most straightforward choice when two tyres on the same axle are worn. If only one tyre requires replacement, match the existing tyre as closely as possible in size, construction and performance characteristics, and seek professional advice where there is a substantial tread-depth difference across an axle. Vehicles with all-wheel drive can be especially sensitive to differences in rolling circumference, so consult the vehicle handbook or manufacturer guidance before mixing tread depths or tyre models.
For the best predictability, maintain matching tyres across an axle and avoid mixing fundamentally different categories, such as a summer tyre with a winter tyre. If fitting two new tyres, ask the fitter about placement for your vehicle and conditions. The answer can depend on tyre type, drivetrain and manufacturer guidance; wet-weather stability is an important consideration.
This routine also makes used-car ownership easier to manage. If a vehicle you are considering has mismatched tyres, very uneven wear, damaged sidewalls or a tyre-pressure warning that keeps returning, factor in the cost of diagnosis and possible replacement. Tyres can reveal poor maintenance, alignment problems and hard impacts that are not obvious from the paintwork.
Check it at least once a month and before long journeys. Also check after a major temperature change, a warning light, a pothole impact or any time a tyre looks low. Always use cold readings unless your vehicle handbook gives a specific alternative procedure.
Treat the warning as a reason to stop safely and inspect the tyres as soon as practical. If a tyre is visibly low, damaged or losing air quickly, do not continue driving on it. If pressures appear normal, use a gauge to confirm them and follow the vehicle handbook’s reset or calibration procedure after correction where required.
Sidewall damage is generally more serious than a small tread-area puncture because the sidewall flexes continuously in use. A visible cut, bulge or exposed reinforcement needs a professional assessment, and replacement is often necessary. Do not rely on sealant or an external plug for structural sidewall damage.
Start by checking that pressures are correct and equal where the placard specifies the same value. If the pull remains, wheel alignment, brake drag, road camber, suspension wear or an issue with a tyre itself may be involved. Arrange a proper inspection rather than repeatedly changing pressures.
No, not as the normal target for your car. The sidewall marking relates to the tyre’s capability and is commonly a maximum value, while the vehicle manufacturer determines the correct operating pressure based on the car’s weight, suspension and intended load. Use the placard or handbook figure.
The most cost-effective approach is consistent basic care: set cold pressures to the vehicle specification, inspect tread and sidewalls monthly, and act quickly on damage, leaks or uneven wear. Those checks help you get the intended service life from my tyres without trading away wet-weather control, braking confidence or fuel efficiency. When replacement is due, buy the correct approved specification and resolve the reason for unusual wear before fitting new rubber.