Help for Newbies

My dear elders, I have 2 06 1.4 HDI XT 2004 & nbsp; I just bought information thanks to the posts shared in the forum. Traveling around, it never falls to 0, the cost to me is what happens to you, and when the 90-100 kmh passes, my tires are trembling a little stale so I am waiting for your help.

I do not know about the tachometer, but after 90-100, it can make the shake from the balance setting