They have 97 highway miles and 3 passes at the drags . I had them heat cycled at discount tire , so they should last 12000 - 15000 miles . If you look at the thread they still look new .
According to the above context, choose the best option to answer the following question.
Question: What subject is the speaker discussing ?
Options:
- Highways .
 - None of the above choices .
 - Sewing .
 - Tires .


Tires .