Avoid if you value your time at all! I'm sure it's ok when it works but the way a company deals with issues when they do appear is very telling of how much they actually care about their customers. Unfortunately Blackcircles deals with issues very poorly and does not seem to care about their customers at all. I was notified last minute that the previously advised timeslot at the given garage "could not be confirmed" and to contact for alternatives. I've replied with numerous emails, got nothing back, tried the phone hotline and the heavily advertised call-back-feature and got nothing back. Eventually I called again and held on the phone until I finally got through to a customer service advisor. He poorly explained that the timeslots advertised on the website don't actually mean anything. Black circles has no information on if a garage is actually available at that time, they will take your money and make you believe you can rely on a given appointment and then hope the garage can accomodate. That leads me to the question: What value does Black circles add? The customer service guy could not answer me this question either. It's supposed to be a convenience service, yet has just added more stress, delay, hardship and a terrible experience to the process of getting new tires. No value added. I highly recommend anyone who values their time to just directly arrange with a garage and cut out the parasitic middle-man with no transparency and terrible customer service, seeing how no extra value or service is provided. Oh, and as a "cherry" on top, the automatic queing system advised me to hold after my conversation with a customer service advisor to provide feedback and a rating. However, the customer service advisor refused to hang up, thus preventing me from giving any feedback. So here I am, giving my feedback on reviews.io.