I got only about 20,000 miles on those LRR tires. I noticed on a previous car that the tires that came with the car didn't last too long but the ones I bought afterward did...so when I went to Costco and they offered me the same LRR tire, I went ahead with it somewhat reluctantly, but I religiously took it back to get the tire rotations to have documentation that I followed the outline required to keep the Warranty valid.
So when I got to just over 40k miles and the tires needed changing again, Costco inspected the tires and agreed. 20k miles onr a tire that has a 55k warranty gives back a pretty good chuck of change (more than half)
This time, I opted to get some different Michelin tires...ones that are not LRR...and guess what, they don't wear out like the 2 previous sets. I rotated at 5k miles and they still seem like most all the tread is still there. yeah I can tell the fronts have worn a little more than the back, but within reason to expect 55k miles of useful life.
The tires will still squeal on corners if you push it, because of the high torque, but it definitely grips better. I'm sure that I'm losing some range here, but my commute is short so I don't really care. If you have a long commute, I feel your pain, but, you can still claim your warranty...just talk to your tire dealer about what you need to do to ensure the warranty is valid after the tires are worn prematurely. Costco is definitely good about it.