Well if any of you are considering changing your tires... you're probably going to have a heck of a time finding tires that fit with the load rating you need. However, search no more!
I found some Nokian WR C Van tires in a 20565R15 size with the C-PLY load rating i need. (I chose to get rid of the silly factory staggered fitment...there is no benefit to it!) There's a website that I buy tires from that has a good deal on them right now. Great service, and best of all - fast, free shipping.
Here is a link to the tire:
They are really good tires, they work very well on my Rialta. They are quiet, which i really appreciate. Also, they are so much better in winter weather (michigan) than the tires i had on before.
The promotion that they have going on right now is for $10 off of 1 tire or $40 off a set of 4. Enter CARCLUB at checkout for the deal.
Hope this helps, fellow Rialta owners!