Tire issue

[MattyD]

So this is odd. My Michelin Pilot Sport4 tire had a bad crack. Possibly pothole related. Took to dealer and they were great in getting a replacement. When I got home and looked closely they put on Michelin Pilot Sport4S. Not 4. Worried about having a mismatch here. It’s front. Thoughts?

 

[ProsperDad]

Was a senior director for a European tire manufacturer for several years, so take this as you will...

2 things you should never do is 1) Never mix speed ratings on the same car and 2) never mix load ratings on the same car.

The Pilot Sport 4 is a 96Y (96 load rating, Y speed rating). The Pilot Sport 4S is also a 96Y.

You could also look at the UTQG rating, but those are manufacturer determined. Being that these are both Michelin, the PS4 is a 320 AA A and the PS4S is a 300 AA A. Technically the PS4 will wear a little longer, but not much.

The US Tire Manufacturers Association will tell you to replace tires in full sets, not individually. From the manufacturer's side, we would also support that messaging, however, would be comfortable from a warranty perspective in at least pairs.

Hope this helps!

 

[G-215709]

Was a senior director for a European tire manufacturer for several years, so take this as you will...

2 things you should never do is 1) Never mix speed ratings on the same car and 2) never mix load ratings on the same car.

The Pilot Sport 4 is a 96Y (96 load rating, Y speed rating). The Pilot Sport 4S is also a 96Y.

You could also look at the UTQG rating, but those are manufacturer determined. Being that these are both Michelin, the PS4 is a 320 AA A and the PS4S is a 300 AA A. Technically the PS4 will wear a little longer, but not much.

The US Tire Manufacturers Association will tell you to replace tires in full sets, not individually. From the manufacturer's side, we would also support that messaging, however, would be comfortable from a warranty perspective in at least pairs.

Hope this helps!

Thank you. I think you are right. I need to ensure at min pair matches. I need to have them replace it with PS4

 

[DJLToronto]

Was a senior director for a European tire manufacturer for several years, so take this as you will...

2 things you should never do is 1) Never mix speed ratings on the same car and 2) never mix load ratings on the same car.

The Pilot Sport 4 is a 96Y (96 load rating, Y speed rating). The Pilot Sport 4S is also a 96Y.

You could also look at the UTQG rating, but those are manufacturer determined. Being that these are both Michelin, the PS4 is a 320 AA A and the PS4S is a 300 AA A. Technically the PS4 will wear a little longer, but not much.

The US Tire Manufacturers Association will tell you to replace tires in full sets, not individually. From the manufacturer's side, we would also support that messaging, however, would be comfortable from a warranty perspective in at least pairs.

Hope this helps!

I am not arguing against anything you said...

But it's super strange that the:
(4) has a 30,000 km warranty with a UTQG of 320 AA A
(4S) has a 50,000 km warranty, with a UTQG of 300 AA A

Counter intuitive wear UTQG vs Michelin treadwear warranty.