Solved

Tyre wear percentages the same

Hi not sure whether this is a bug or not so posted here.
But the last race in Brazil on both cars my during practice on mediums and hards I had the same tyre wear at 3% on both compounds, I obviously choose the quicker tyre but they absolutely died after 15 laps not the 20 they were supposed to.
The hards were useless as I tried switching so just wondered if this is normal. 

In practice, wear is rounded (I believe it is truncated but this may be wrong as it's hard to tell) to the nearest whole %age. Therefore 3% could be much more- 3.4% in either system, for instance.
Wear between compounds always follows the same ratios (SS wear * (you'll have to find out)= Softs wear, for instance) so H will always wear less than M regardless of what practice says. 

Clarification, just in case:
Rounded: 2.50 to 3.49(...) round to 3
Truncated: 3.00 to 3.99(...) round to 3

Edit for grammar fix ?

Confusing but thanks anyway ?