http://store.rc4wd.com/Mud-Slinger-2-XL ... _3885.html

Hello Woyta
thank you for you kind email , and the pictures showing the problem , this is, no doubt, a manufacture problem, the stuff looking like glue looks like not cured rubber but its definitely not glue, and i know this because nobody here is gluing lugs.
we usually look for manufacturing problems and reject tires that are deformed or any kind of serious defect, but this defect you showing is new to us, so thank you for reporting !
we can do two things about your order, i can refund you the money or i can send you a set of 4 not defected tires
let me know what you want me to do , either option is fine.
warm greetings!
Daniel