In the range as I wrote, the front wheel jumps up and down, at most at 55 km/h. The seller did not have a second piece in stock so that I could compare it, but I have agreed that they will try to change the second tire and if that doesn't help, only the shock absorbers are left. Fortunately, the owner of the shop is an expert in chassis, tunes racing bikes, rides himself, that's why I bought it chose However, he is currently on vacation, so the next solution is only after 22.7.