物理耐性の上限

防御の数値上限値は567。上限まであげた時ダメージを80%減らす。

Damage reduction is capped at 80%. If you are wearing all four pieces of armor, this occurs at 567 displayed armor rating.

参考

Skyrim:Armor – UESPWiki
http://www.uesp.net/wiki/Skyrim:Armor#Armor_Cap