The turrets on the Twisted Treeline currently do not have Reinforced Armor, thus starting the game at 67 armor and 100 MR instead of 217 armor and 250 MR. However, the 75 armor and MR decrease in the presence of enemy minions is still functional, resulting in turrets that have -8 armor and 25 MR. This results in turrets that fall extremely quickly even where there's only a wave of minions around.
Yes, riot have patched this on the PBE but refuse to push it out to the live servers.
Yea I was playing ranked threes the other day and I was 
and I noticed the exact same thing when we aced the team and i was chunking turrets. I saw however that the turret had -11 armor from an ace at 11 minutes i took two turrets. 8 shots to kill a turret was nice. Honestly though I enjoyed it with towers falling that quickly but when someone like 
got there it was gg on the first ace.
Dunno why riot just don't do a hotfix, pretty sure they can do those live?
