For what it’s worth, here are the prices I paid compared to the Tire Rack(today's price). I hope someone can use it for comparison. Tax here is now 6.5% going to 7% before Christmas. I was off a little on the tire designations. The price includes the sale price. I think I will go with the 700 tread rating with the X Rad + next time on the 945.

Merc:
P205 65R15 X Radial Plus...76.49 EA (Tire Rack price $89.00 EA)
Road Haz, Mtg, Balance......9.00 EA
Tire Disposal Fee...........1.00EA
+2% NC TAX
+6% state tax
T speed rating
Tread 700
Traction A
Temp B
Made in Italy

945:
P195/60R15 MX4V Plus......94.49 EA (Tire Rack Price $111.00 EA)
I went up a size on the width and down one on the sidewall. I figure the speed-o-meter would read 1 to 2 miles/hour less.
Other charges are the same as above.
H speed rating
Tread 400
Traction A
Temp A
Made in USA
--
Tom F