Talk:18 Season Camaro ZL1 Championship/@comment-195.210.94.33-20180215140653/@comment-28169398-20180215153633

The PR amounts for individual upgrades shown on Wikia aren't always 100% accurate because the total PR depends on the order and combination of upgrades added. The values given in game are rounded and we have no way of seeing what the accurate amounts are.

So, while the tenths rounded numbers may add up to the desired PR, in game it may fall short due to how the game rounds those numbers. That is why it is always best to check the Strategy guide, as someone has gone into the game and checked that the upgrade tree adds up to the required PR.