Depending on the amount of wear, I don't believe it is really important to replace all 4 if all have good tread.
The concern is the different tread pattern may give different stability in say, rain. . ..
You should be able to look at the tire size and they all should be the same. . .that is important. Different manufactures again goes back to the different tread pattern, different handling. . ...
I usually put unlike tires on the back. . ...that way your steering always has the good tires. . ..
I have attached an excellent web site for you to review and you can call these folks and they can provide some excellent info.
Sunday, January 4th, 2009 AT 12:16 AM