Part worn tyres split people right down the middle. Half the drivers who come in would not touch one, and the other half have been buying them for twenty years and never had a moment's trouble. Both groups have a point, and the difference between them usually comes down to who they bought from.
We sell both new and part worn here, so we have no reason to talk either one up. Here is how it actually works.
They are legal, but there are rules
Selling part worn tyres in the UK is entirely legal, and it is covered by its own set of regulations. A tyre being sold as part worn has to have at least 2mm of tread across the full width, it must have no cuts, bulges, lumps or exposed cord, any structural repair must be done to the proper standard, and it has to be permanently and legibly marked with the words PART WORN in letters at least 4mm high.
That last one is worth remembering, because it is the easiest thing to check yourself. If a tyre is being sold to you as part worn and it is not marked, whoever is selling it is not following the rules, and that tells you plenty about how carefully the rest of the job has been done.
Trading standards have run test purchases across the country for years and consistently found a decent proportion of sellers falling short. That is where the bad reputation comes from. It is not the concept of a used tyre that is dangerous, it is a used tyre sold by someone who never looked inside it.
What we actually check before one goes near your car
Every tyre we take in gets gone over before it earns a place on the rack, and then checked again before it gets fitted.
Tread depth across the full width, not just the middle. A tyre with 5mm in the centre and 2mm on the inner shoulder came off a car with an alignment problem, and it has already had the hardest part of its life.
The outside of the sidewall for cuts, gouges, kerb damage and bulges. A bulge means the casing cords inside have snapped and the air pressure is pushing the rubber out. That tyre is scrap, no argument, no repair.
The inside of the casing, with the tyre off the rim and a light in it. This is the check most people never see and the one that matters most. We are looking for old plug repairs done from the outside, damaged cords, and the fine circular scuffing that tells you the tyre has been driven on while flat. A tyre that has been run flat has been cooked internally even if it looks perfect from the outside.
Any previous repair, to see whether it was done properly with a combination patch and plug from the inside, in the safe central area of the tread. Repairs in the shoulder or sidewall are not permitted, and we will not sell a tyre carrying one.
The date code, so we are not handing you rubber that has been hardening in the back of a shed since the last World Cup but one.
Uneven or odd wear patterns, because those hint at what the tyre has already been through. Anything that fails one of those checks goes on the scrap pile and gets collected. We would rather lose the sale than have somebody's family sat on it.
When a part worn tyre is genuinely the right call
Plenty of situations, and we are not going to pretend otherwise.
MOT is on Thursday and one tyre is on the wear bars. The car is going in part exchange in eight weeks. Something let go on the way back from work and it is the wrong side of payday. A second car that does the school run and the Tesco trip and covers three thousand miles a year. A van keeping a small business moving while cash flow catches up.
In all of those, a good part worn tyre with 6mm or 7mm of tread on it, checked properly, gets you safe and legal for a fraction of the money. There is nothing shameful about it and nothing unsafe about it. It is a sensible decision made with the money that is actually in the account this week.
When we will tell you to buy new instead
If you are keeping the car for the next two or three years and doing regular motorway miles, new almost always works out cheaper per mile. You are buying the full depth of tread rather than the second half of somebody else's, and the cost per thousand miles usually lands lower even though the price on the day is higher.
Same answer if you are doing a lot of winter driving and want the best wet grip you can get, or if your car is heavy and hard on tyres, or if you want a specific brand and pattern to match what is already on the other side of the axle.
We will say all this out loud even though the part worn sale is the easier one to make. Telling somebody the truth and watching them come back in three years with the next car is a better business than the alternative.
Mixing tyres, and why the pair on an axle matters
Whatever you choose, keep both tyres on the same axle sensible. Same size, same construction, and ideally similar tread depth and pattern. Wildly different grip levels left to right on the same axle changes how the car behaves under braking, and you will find out about it at the worst possible moment.
If you are only replacing two, the better pair belongs on the back. It sounds wrong to a lot of people, particularly on a front wheel drive car, but a car that loses grip at the rear first is far harder to catch than one that pushes wide at the front. Every tyre manufacturer gives the same advice for the same reason.
What a part worn tyre actually saves you
Prices move with size and brand, so we will not print numbers that go stale, but the rough shape of it is this: a decent part worn tyre usually lands somewhere around half of what the equivalent new budget tyre would cost you fitted, and a good deal less than half against a mid range or premium one. On a common size for a Corsa, a Focus or a Golf, the gap on a single tyre is often the difference between a bill you can absorb this week and one you cannot.
The honest way to compare them is cost per thousand miles rather than the price on the day. A part worn tyre with 6mm has roughly four and a half millimetres of usable life left before we would want it off at 1.6mm. A new tyre starts with around 8mm and has six and a half. Do that sum with the two prices in front of you and you will see straight away which one suits your situation, and it genuinely is not the same answer for everybody.
How to buy a part worn tyre without getting stung
Ask to see the tyre before it goes on the rim. Look for the PART WORN marking. Check the date code yourself. Ask whether it has been inspected inside and what they found. Run your fingers around the inner shoulder, the bit you cannot see once it is fitted. Ask what the tread depth is and expect a number, not a shrug.
A seller who is doing the job properly will not mind a single one of those questions. If somebody gets twitchy, go somewhere else.
Ring 01376 433951 with your tyre size, the numbers off the sidewall, and we will tell you what we have got in new and part worn, with prices and tread depths for both, so you can make the call yourself. Or drive into the Broad Road workshop Monday to Saturday, 9am to 6pm, and we will have a look at what is on the car first.
