Auto-X/Street Tire Choice.

[mojoyaris]

How about the Nitto NT-05 which compete with the Azenis 615's? I'm not sure about pricing in the US, but they are comparable to the ones you 've listed in Canada.

The Toyo R1R's are a great tire for ST class. In Canada, there are some regions that don't run SCCA ruling and they don't qualify for ST type classes. You'd have to go do something that is 200 utqg and above.
Since the R1R is 140, right at the legal limit for street tire class in SCCA.

The T1R is an awful tire for the track. yuck. Especially road tracks in a Miata.
Azenis are known to get a bit greasy on a hot day and I hear that the Nitto NT-05 has addressed those concerns and are very competitive. I think their utqg rating is 200.
Great for the street and solo 2 courses and it looks good.

I'm getting a set of T1R's for the street just because its an easy and forgiving tire. Loren is very correct here with that tire.

I may be a bit biased with Toyo and Nitto tires, but they make a good tire, especially the R1R. For a few bucks more, it may be worth it.??