Here are the R21 sizes that the Michelin Pilot Super Sports are available in.
295/25ZR21/XL
305/25ZR21/XL (new)
245/30ZR21/XL
255/30ZR21/XL
265/30ZR21/XL (new)
285/30ZR21/XL
295/30ZR21/XL (new)
325/30ZR21/XL (new)
245/35ZR21/XL
285/35ZR21/XL (new)
Come on Michelin, how about some 265/35ZR21 love!
Pilot Super Sport tires | Michelin US
295/25ZR21/XL
305/25ZR21/XL (new)
245/30ZR21/XL
255/30ZR21/XL
265/30ZR21/XL (new)
285/30ZR21/XL
295/30ZR21/XL (new)
325/30ZR21/XL (new)
245/35ZR21/XL
285/35ZR21/XL (new)
Come on Michelin, how about some 265/35ZR21 love!
Pilot Super Sport tires | Michelin US