Can anyone help. I have made my tires with RCT but I do not know how to make the tread marks can anyone help me thanks
I'll take a stab at helping you, even though I have never actually done it.
You already have made the tires? Are they iced? If not take pieces of fondant and make the pattern you want, then cover the whole thing with fondant. I'm thinking of a pattern somewhat like this; \\ /\\ /\\ / OR maybe a zigzag from side to side on the tire.
I just made a tire tier on the last cake I made and I personally found it nearly impossible to do. I ended up using a diamond impression mat and one of my fondant and gumpaste tools to draw zig zags over it. I still didn't like the way it came out tho, so hopefully someone else can help you...
Is this what you are looking for:
I just made it with strips of fondant.
I made the treads using pieces of fondant. You just make fondant snakes and place them in a V shape all around the tire.