If you are not aware, these tires are on international backorder.  If you do not carry a spare and need one, the road service will probably not be able to furnish one.  Only Michelin makes this size. 

 

I purchased 4 of these tires so I could have spares.  They were on a coach that was stored on a motor home inside with the jacks down by a snow bird in Myrtle Beach.  He stayed in his condo.  They have about 80% of the tread on them and are about 8 years old.  I paid $700 for the set and got a hell of a buy.  They are that good.  No sidewall aging at all.  I will sell two of them for $175 each, plus shipping.  They weigh about 80 lbs a piece.