Talk:BMW M2/Tuning/@comment-34346976-20180221081114/@comment-31458611-20180223161327

None of the above; it's a rounding error by design. The rank increases resulting from upgrades (and elite settings) actually have decimal places, and are rounded to integers before being added to the rank figure. It goes like this: ( 5.4 + 9.2 + 15.3 + 1300 ) becomes ( 5 + 9 + 15 +1300 ), which equals 1329.

Now do it the other way round: sum first and round later. See the difference?