Hi. I just order 18" R133 and I have question 4 you maybe someone can answer me . On official page they write that I need extra part (https://www.fcpeuro.com/products/min...er-32106777974) some steering angle stop. Is this necessary part? What is it for (except what is on it name ) I think that there is Sam difference between 17/45 and 18/40? Will be glad for answer.
P.S. If I have to instal this part is ther somwher DIY and how difficult it is ?

 

You don't need the steering angle stop