what are all the other brand and tire names that are in the same league as the azenis rt615? and how much are the tires? preferable tires in comparison that fit rims spec of 18x7.

 

There aren't a lot of choices for rims that large, and there's nothing exactly like the Azenis RT-615, which is sort of a cross between a street tire and an R compound track tire. The closest you're going to come is the Hankook Ventus R-S2 Z212, which is available in 215/35-18 which can be mounted on an 18x7 rim. You can look up the price on the Discount Tire website.

 

Hankook R-S2 Z212 is a direct competitor to the RT-615, not sure of the sizes offered by Hankook, check their site

The Hankooks are good, i run them as my summer tire, good grip but will only last as long as RT-615's which of course is not too long.