Michelin Primacy A/S Selfseal Tires Offer More Than Security

As more and more automakers delete spare tires in order to save a few pennies or extend the range of an EV by six feet, the consumer is the one left out in the cold when a tire is damaged. Michelin offers an interesting solution to this issue. Its Primacy Selfseal tires can plug a puncture as soon as it happens.

Related Story: Ford's Explorer Offers the Best AWD SUV Flat Tire Management System Available

What Are Michelin Primacy A/S Selfseal Tires?
Michelin’s self-sealing tires contain a layer of sealing material inside the tire. In the event of a puncture, the self-sealing material will help to prevent the tire from going flat. Michelin says that the technology can seal up to 90% of summit tread punctures up to ¼” in diameter. In other words, a puncture from a typical nail in the tread area, but not the area of the tire adjacent to the sidewall. We tested all-season touring tires on the 2021 Ford Explorer XLT.

How Do Michelin Primacy A/S Selfseal Tires Work?
Michelin says that the tire will lose air following a puncture, just not rapidly. The company’s guideline is about 15 PSI per week. Your vehicle’s Tire Pressure Monitoring System (TPMS) will alert you to the slow loss of pressure.

Can Michelin Selfseal Tires Be Repaired?
So you had a puncture and the Michelin Selfseal tires did their job. What then? The owner can inflate the tire temporarily and have it repaired at a qualified tire repair facility. We reached out to Michelin and confirmed that this was correct. Michelin’s spokesperson told us, “We always recommend an expert see the actual puncture first to make sure it's not something unusual.” The tire is designed for nail and screw punctures, not catastrophic damage as might occur if one strikes a curb at speed. Here is a video that shows how such tires can be repaired by an independent source.

How Much Do Michelin Primacy A/S Self-Seal Tires Cost?
We priced out two Michelin Primacy tires. One with and one without the Selfseal technology. We used the Explorer’s larger optional wheel size of 255/55/20. Tire Rack lists the tires at $205 for the conventional tire type and $262 for the Selfseal-equipped tires. So the premium is roughly $55 per tire. Interestingly, Ford charges $195 for the addition of these special tires. There is no added Ford markup on the cost of the tire, just the actual retail cost difference.

Stop Debating If a Spare Is Better
We would understand if a reader immediately jumped to a mental debate about whether a spare tire or Selfseal-equipped tires are the better choice. However, Ford does not make you choose. The compact spare is still in the vehicle.

We drove about 300 miles on the Michelin Primacy A/S Selfseal tires in a wide variety of situations including highway, rural dirt roads, city traffic, and suburban streets. We found that the Michelin Primacy A/S Selfseal tires offered an extremely smooth ride and were much quieter than typical tires to our subjective ears. Those who are seeking a solution to frequent punctures should opt for the Michelin Selfseal tire when given the choice. We found only upsides to the technology. Now, if Michelin would just combine this technology with its amazing CrossClimate2 advanced all-season tire design…

John Goreham is a long-time New England Motor Press Association member and recovering engineer. John's interest in EVs goes back to 1990 when he designed the thermal control system for an EV battery as part of an academic team. After earning his mechanical engineering degree, John completed a marketing program at Northeastern University and worked with automotive component manufacturers, in the semiconductor industry, and in biotech. In addition to Torque News, John's work has appeared in print in dozens of American news outlets and he provides reviews to many vehicle shopping sites. You can follow John on TikTok @ToknCars, on Twitter, and view his credentials at Linkedin

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