Crossbar – mechanic kicks me against the tires and judges defective

Greetings, I had the free early-year check at the FOH yesterday. Fortunately everything was found OK here, except for the crossbars. I don’t trust the roasting. My omi was standing on the ground, not on stage, with beaten wheels to the left. The mechanic then stepped on the tread of the driver’s side tire with 3-4 proper “riders”. The “swinging” the wheel at these kicks was too strong and would clearly point to locked crossbars. In “our” FAQ, however, I read that defective crossbars express themselves like this: “First signs are a unique, metallic knocking on the short and strong tap of the brake.” Taking into account that my crossbars are still the originals, this naturally gave me thought. Nevertheless, I do not have a “knocking” during braking and also notice nothing unusual when driving in the area of my front axle. e of course, if this type of inspection is common and the swinging is a wear. Is there a house number in relation to kilometers or age, when you absolutely have to change it? I already have almost 249,000 down. They are not rusted.