My 2003 AWD CR-V EX had a flat on the front passenger side after 15,000
miles. I found there was quite a significant thread depth difference between
the new tire and the worn tires. The other AWD car, a Subaru, I used to own
had a very tight tolerance for tire diameter difference. What about the
CR-V? Can I use the spare with the other three worn tires?

TIA