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Wheels look like the simplest part in the catalogue, but getting the wrong size, offset, or bolt pattern is one of the easiest expensive mistakes to make. This guide covers what to check before ordering and how to judge the real condition of a used wheel.
Rim size, bolt pattern (PCD), and offset
The rim diameter and width need to match your car exactly, but the bolt pattern (PCD - the number of bolts and the circle diameter they sit on) and the offset (ET value, how far the wheel sits in or out from the hub) matter just as much and are easy to overlook. A wheel with the right diameter but the wrong PCD simply won't bolt on, and the wrong offset can make the tyre rub against the wheel arch or suspension components.
Steel versus alloy wheel wear
Steel wheels tend to fail by rusting from the inside out, starting at the bead seat where the tyre meets the rim, which is often invisible until the tyre is removed. Alloy wheels more often develop cracks from pothole impacts, usually near the spokes, and any crack - however small - means the wheel should not be used, since alloy cracks propagate under load rather than staying stable.
Hub caps and decorative covers
Hub caps and decorative covers are purely cosmetic and carry no structural role, so a used one in good condition is almost always a safe purchase - the main thing to check is that the clip or bolt pattern matches your specific wheel design, since even wheels of the same diameter can use different cap fittings across trim levels.
Tyre pressure sensors in the wheel
A tyre pressure warning light that stays on after a wheel change often means the sensor's battery has finally died rather than a fault with the wheel itself - these sensors have a sealed battery lasting roughly 5-10 years and can't be recharged, only replaced. When buying a used wheel with a sensor already fitted, ask whether it has been tested, since a dead sensor battery isn't visible from the outside.
How to judge a used wheel's condition before buying
Check the rim's inner lip for gouges deep enough to catch a fingernail, since these often indicate the wheel has been driven on with a flat or badly underinflated tyre. Spin the wheel by hand if possible and watch the rim edge from the side - any visible wobble points to a bend that a straightening service may or may not be able to fully correct, and it's worth asking whether that's already been done.
Summer versus winter wheel choice
Many owners keep a separate set of wheels for winter tyres rather than swapping tyres on and off the same rims twice a year, which is both cheaper on tyre-shop labour and gentler on the tyre bead over time. Steel wheels are the more common choice for a winter set since they're less likely to crack from road-salt-accelerated pothole damage and cost less to replace if damaged.
How wheel condition affects tyre wear
A slightly bent rim that isn't severe enough to cause an obvious vibration can still cause uneven tyre wear over time, since the tyre never sits perfectly flat against the road on that wheel. This kind of wear pattern - wearing unevenly on one side rather than evenly across the tread - is worth checking if a specific wheel position always seems to need new tyres sooner than the others.
Storing seasonal wheels correctly
Wheels not currently in use should be stored flat rather than leaning against a wall, since leaning for months can cause a slow, permanent set in the tyre if left with the same contact point too long. Stacking wheels with tyres attached also transfers the top wheels' weight down through the stack, which is fine for a season but not ideal for long-term storage of five or more sets at once.
Browse wheels and trim parts here. Not sure which size fits your car - contact us with the make, model and year.
Frequently Asked Questions
- How do I know what wheel size fits my car?
- Check the wheel size and bolt pattern (PCD) on your vehicle registration document, or search our catalogue by make and model.
- Is a used wheel with a small scratch safe to use?
- Yes, as long as it isn't bent or cracked - every wheel we sell is checked before sale.
- Will a used wheel fit my car?
- Give us the make, model and year when searching - our specialists confirm compatibility free of charge.
- Do I need new tyre pressure sensors when buying used wheels?
- Not necessarily - if the existing sensors test working, they can usually be reused, but ask for a test result before buying.
- Can a bent wheel always be straightened?
- Not always - it depends on the severity and location of the bend, and on whether it's steel or alloy. A specialist can assess this before you pay for the service.