I really thought it was more recent than that , but I knew it was before they took over Scotty 's and that I had at least two flats and patches since getting that set of tires . With luck the new tires are replacing ones that were patched , but who knows , since I get them rotated regularly . There real surprise was that three years and four months only translated into 20,000 miles , even with all of the travel I have done ! ! The Tire Depot people thought I had a good attitude about it all , but I was just grateful it happened now and not while I was on the road .
Why was the narrator grateful that their tires needed to be replaced ?
Pick the best answer from the following options:
- None of the above choices .
 - Because the narrator enjoys maintaining their vehicle .
 - Because the enjoys spending money .
 - Because the tires had n't given out on a business trip .


Because the tires had n't given out on a business trip .