That tire size is the "official recommended replacement size" from Chrysler. I was recently working out of state when I had a flat that was unrepairable. Knowing the availability problems with this tire, I went to the local Dodge dealer, only to have them tell me that this tire is no longer avaiable and would have to buy two of the 235/55/19 sized tires. I called Chrysler, and to make a long story short; they have a stash of tires, but will only give them out one at a time for situations like mine. I didn't want to replace more than one because I only had 20,000 miles on this set. In a conversation with my rep at Chrysler, she provided me with the official recommended replacemnet size. So when this set is worn out, I'm definately switching to a more readily available size. It took four days to Fed Ex my replacement tire to my local Dodge dealer.