This is from the Bridgestone site with regard to the REVO:
"Warranty Summary:
Platinum Pact Limited Warranty
30-Day Test Drive
Standard Limited Warranty"
A tire with no warranty? C'mon, who'd buy them (especially for the price of these)???
If you have been told something else, especially that there is no warranty, go elsewhere. If in doubt, call the Bridgestone Corporate Headquarters at 615-937-1000. If you find that there is this warranty, please report to Bridgestone the dealer that told you there is no warranty.
I called a Firestone dealer (Firestone and Bridgestone are the same company) and asked. The 50,000mi standard warranty has been eliminated for certain size tires (larger sizes) due to warranty "overuse". Basically, people have been using the larger size tires off-road, beating them up, and wanting a pro-rate for replacement. The Platinum Pact Limited Warranty, for manufacturer defects, is still in place. Get more details on the size you want.