Privacy

The short version

Using the tools

When you search a tyre size, compare two sizes, decode a marking or press something on one of our pages, we record that the action happened. We keep the tyre size or marking you asked about — including ones we could not answer, which is how we decide what to build next — along with the page, the country your request came from, and the website you arrived from.

We do not store your IP address, your browser's user agent, or any cookie or identifier that would let us recognise you. To count visitors without any of those, we combine the date, a secret, and details of the request into a one-way hash and keep only the hash. Two visits from you on the same day count as one person; the same calculation tomorrow produces something unrelated, so there is nothing here that can follow you between days or between devices. We keep the host of the site you came from and never the rest of its address, which can contain a search you made somewhere else.

This runs whether or not you accept cookies, because it holds no personal information about you. Our interest in knowing which tyre sizes people look for is what it rests on, and it could not identify you if we wanted it to.

Google Analytics

We would like to understand how people find the site — which searches lead here, which pages bring people in. Google Analytics answers that, and unlike everything above it works by setting cookies on your device.

So we ask first. Until you accept, no Google code runs on any page and no Google cookie exists. If you decline, or simply ignore the question, nothing loads — an unanswered question is a no. You can change your mind at any time using the Cookie settings link in the footer of this site or of the calculator.

It runs on both, on one measurement, because they are two parts of the same site — so following a link from here to the calculator is one visit rather than two. Your answer, though, is stored separately by each of them, because a browser keeps one site's settings out of another's. So each will ask you once.

Contacting us

If you send an enquiry or sign up for early access, we keep your name, email address, message and which tool you were asking about. We use it to reply to you and, if you signed up for updates, to send them. It is stored in our own database and emailed to us. We keep it until you ask us to delete it, and you can ask at any time.

Photographing a tyre

The calculator can read a tyre size from a photograph of a sidewall. That image is passed to a specialist text-recognition service to be turned into text, and then it is gone: we write it nowhere — no database, no file store, no log. It exists for the length of one request. What that service does with what passes through it is governed by its own published terms.

Looking up a vehicle

Searching by car sends the make, model and year to a vehicle-fitment data provider through our own service, together with the country your request appears to come from, so the sizes offered are the ones sold in your market. Nothing identifying you is sent.

Hosting

Our sites are served through a global hosting and content-delivery network, which handles requests on our behalf and keeps its own short-lived operational and security records, including IP addresses. That is what makes it possible to serve the site quickly wherever you are and to defend it from attack. Those records are the provider's, held under its terms, and are not part of anything described above.

Who else sees anything

A small number of suppliers help run these tools. Each is listed by what it does and what reaches it, which is the part that concerns you:

Each is used for that one job and nothing else, on the data protection terms it publishes. We name them by role rather than by brand because which suppliers we have chosen is part of how the product is built rather than part of what happens to your information — and nothing above is less true for not naming them. If you want the current list by name, ask us and you will get it.

These suppliers operate in several countries, so information reaching them may be processed outside the one you are in. We share nothing with anyone for advertising, and we sell nothing to anybody.

How long we keep things

Your rights

Wherever you are reading this, you can ask us what we hold about you, ask us to correct it, ask us to delete it, ask for a copy of it, object to our using it, and withdraw any consent you have given. Data protection law gives those rights in most of the countries these tools are used from — the GDPR in the UK and EU is the best known of them, and POPIA, the CCPA and their equivalents elsewhere say much the same thing. We apply them to everybody rather than only to the people whose law compels us to, because sorting visitors by passport would cost more than simply doing the right thing once.

One honest limitation: the usage records described at the top cannot be traced back to you, by us or by anyone. There is no identifier in them to search on. That protects you, and it also means we cannot produce or delete "your" usage records on request — there is no such thing in there. Anything you have actually sent us, like an enquiry, we can find and delete straight away.

Write to [email protected] and we will deal with it. If our answer does not satisfy you, the data protection authority for your own country can take it further, and you do not need our agreement to go to it.

Changes

If what the tools do changes, this page changes with it, and the date at the top moves. It describes how the software actually behaves today rather than everything we might one day be entitled to do.

Contact

TyreSpace — [email protected]