Get digits after character in Google Sheets

Question

I need to extract first two digits after character "R".

DATA:

165/70 R13 79T
225/75 R16C 118R
205/60 R16 92H

Tried this =REGEXEXTRACT(C2,"^R(.)"), but this is not quite necessary result. Thank you!

user_5632629 · Answer

use:

=REGEXEXTRACT(C2; "R(\d{2})")