SO - I noticed today (guess I never looked at this) - my Michelin PSS has a 'label' on the tire. It says 'Outside' or 'Interior'. Any idea WHY? Is it just a cosmetic thing? Since it is not a directional tire, why would they even label an 'outside' or 'inside'?

I do see that the 'outside' side of the tire is 'prettier'....it has the 'flags' on either side of the 'Michelin' wording..

Any reason to be concerned?

 

They have an asymmetrical tread design. Not the same as directional, but the inside shoulder of the tire has a different rubber compound and tread design than the outer shoulder. Therefore they need to be mounted a certain way on the wheel, not position on the car or direction of travel. I don't remember where I saw it, but I did read the the PSS have a soft compound on the outer shoulder for awesome cornering grip and a harder more durable compound on the inner shoulder to help them last longer.

http://www.tirerack.com/tires/tirete...jsp?techid=180

 

Very interesting - looks like I am heading to Discount tire tomorrow morning and get them properly mounted.

Thank you very much for the info!