We've had virtually NO warranties on Vapor boots over the past 2 years. We did see some issues in the first years of the RS-1 Boots and early Strada boots where the rubber cracked or tore...but Radar did a great job of taking care of these. On the new boots...honestly just haven't see the issues...and if they arise, Radar has been good about taking care of them if the boots have had normal usage.
One note...where you store your boots when not being used or drying out makes a BIG difference. If you can keep them in an air conditioned or climate controlled area to dry....it can extend the life of them. We see skiers leave their gear in their boats, put up wet, covered by a boat cover, when the temp is 100 degrees outside...and with all the moisture left to "cook" the boots...its just not ideal for the longevity of them. A little tlc and common sense will go a long way.
Also if you ski alot...at some level your boots WILL wear out. Think of them like running shoes....if you run 3-5 days a week....they will break down and wear out after usage. Ski boots are no different. However, premature cracking / defects should they happen, should be addressed by the dealer you bought them from. I'm amazed how many people call us....having NOT purchased product from us to ask us about "warranty" on products.
Obviously my first question back at them is...
"Have you taken them to the dealer you bought them from?"
and often times their response back is "Oh they can't seem to get an answer"... or "they won't do anything" or "no, we wanted to call you guys because we hear you guys always are great with warranty issues"....
Obviously on some level this is an awkward position for us...but even then, we typically try to help if we can in the hopes of winning a new customer. But please...if you have a good shop by you...who you have a relationship with...support them. And when you have issues, they will be there to support you. Getting the best "price"...is not often getting the best "deal"..especially when you have problems.
Sorry for the rant...but please...support your local pro shop... who in turn can support you.