i've never run anything bigger than a 33" with that bumper (it just worked out that way) but i will say that the powdercoat has held up well to rust/salt. I kept buying them at 4wd hardware in scratch n dent for like 150 bucks. I ran one for a few months and it was fine, my brother has had his on his rig for close to 3 years and it hasn't rusted at all... Which is amazing because everything else has lol.
2007 2 door, RK coilovers, 5.38 gears, built rubi axles, 35" Kumho KL71's, etc
2003 TJ, solid 60, Full traction long armed, caged, etc
2011 Jeep WK2 70th anniversary (baby hauler)
2013 focus ST, SCT with unleashed tune, green filter, Daily driver