We've decided to compare the differences of the DoubleDown (DD) casing and the DH Casing in this following article
Continental MTB Tire Guide - Bikers Edge
Maxxis MTB Tire Models - Which One is Right For You?
Folding Bead vs. Wire Bead MTB Tires
Minion DHR II - MAXXIS US
Maxxis Sidewalls Explained EXO vs EXO+ vs DD vs DH
Maxxis (New EXO+) vs (Old EXO+) - What's the Difference?
Maxxis MTB Tire Sidewalls Explained
Maxxis Tire Guide: Which Maxxis Tire Is Right For You? (One Stop Shop)
Maxxis Shorty Gen 2 MTB mid-spike mud tire gains traction, reduces size & weight - Bikerumor
Maxxis Tire Guide: Which Maxxis Tire Is Right For You? (One Stop Shop)
Maxxis 27.5 Minion DHR II Tyre
Maxxis (New EXO+) vs (Old EXO+) - What's the Difference?
Alloy vs. Composite MTB Pedals - What's the Difference?