Finally figured out what was shredding clothes in my Saivod dryer

That exact thing happened to my old Beko unit about two years back. I heard a horrific rhythmic clicking during a cycle and found what looked like a sheared rivet poking out of the rear drum holes. Turned out to be a flat steel underwire that had worked its way thru and bent backward.

One thing I learned the hard way after pulling it free with vice-grips: check the perforation for micro-burrs. The stiff wire had scored the edge of the stamped drum hole on its way out. Even with the wire gone, that tiny jagged lip kept catching delicate shirts and pulling threads.

To find any spots like that, take an old pair of nylon pantyhose, stretch it over your hand, and rub it across the entire drum surface. If there's even a microscopic sharp edge left behind, the nylon will catch instantly without ruining good laundry. If it catches, rolling a tiny piece of 400-grit wet/dry sandpaper into a cone and gently twisting it in the hole smooths it right out.

You were lucky it came out in one piece. When a similar piece of wire wedged itself into the rear vent holes of my Whirlpool dryer, I tried yanking it straight out with locking pliers. The metal was brittle from heat cycles and snapped right at the rim of the perforation, dropping a three-inch curved needle directly behind the drum into the heater housing. I had to pull the unit out from the laundry alcove, disconnect the vent duct, and remove about a dozen 5/16-inch sheet metal screws to get the rear panel off. If I hadn't opened it up to retrieve that chunk, it whould have rested right against the exposed coil element and tripped the thermal fuse, or worse. Ever since then, if a wire gets stuck, I don't try pulling it backward into the drum anymore. If it doesn't slide out with zero resistance, I prefer popping the back access panel off first so I can see what it's catching on behind the drum wall before applying any force.

Good catch before it chewed up your rear felt seal. Most of those Saivod tumblers are just rebadged Vestel TDC/TDF chassis, and the clearance between that spinning back rim and the stationary bulkhead is paper thin.

Take a flashlight and inspect the seam between the rear tub plate and the drum while rotating it by hand. If that wire was protruding out the backside even an eighth of an inch, it coud've gouged the felt runner or started shredding the drum seal tape. If that seal gets chewed, your cycle times will shoot thru the roof from lost airflow.