I have found the Rubin Pro’s are good for time trails and not a fan of using them for heavy cornering.
For using them racing the 23 mm, I like to have less then 1,500 km on them and for the 20 mm I like to have less then 800 km.
For max life span the 23 mm seam to be in the 2,500 to 3,000 km range and the 20 mm at 1,000 to 1,500 km. Keep in mind I am hard on my tires so your mileage may be better.
