I'll keep it short:

Is there really an appreciable difference? I want to run 205/50-15 Azenis on a B16 CRX. This is primarily a street application.

Thanks for any help.

 

I think the 15x7 would be better. most 205 tires require a rim width of 7-8"

 

the 7" will have less "sloppy" feeling when cornering. It really depends on the person driving how noticeable the difference is. I'm sure autox die-hards would be able to tell much more. Imo, the azenis sidewalls are so rigid it makes up for the .5" loss. So for street use it probably doesnt matter, but if you think 7" will fit the crx then more power to you .