Ya I had 41's with a 10" suspension on my last truck so they should be able to tuck way more then a 40"
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05 3500 Yellow 6 speed,Mega cab dually fenders,Rumble Bee Scoop,Edge Juice w/A2,Edge EZ,Smarty,CFM+,ATS Exhaust Mani,Silver 64,90's,Airdog 150,Valair 3600 DD,5" Silverline exhaust,8" tip,Icebox with torque tube,Quad Rail Gauge,Mag-Hytecs,Lorenz Level, 22.5's