duke wrote:icehouse wrote:Duke I thought of a way to get 13" wheels on your car. You can adjust your bump steer using the spherical bearing under your strut (where the old ball joint was) instead of spacing the out tie rod. The only worry is that it may need to be spaced the way you can't go. I tried to go back and look at photos to see but the one I need doesn't show up.
Interesting thought. It would be a compromise though in that it would lower the front roll center. I've got a few events left in the 15" race tires that I have, but when they are nearing the end of their life, I might have to take another look at what I would have to do to get the 13's to fit. They are really light!
You wouldn't have to change the roll center. You can use bump steer spacers to make up the difference. The bump is dictated by the relation ship of the "ball joint" and outer tie rod pivot points. Once you get that relationship established you can then move them together with a bump steer spacer and get your roll center back. We made a 1.75" bump steer spacer on Sam's car for fun. He didn't have any and if we were going to make them why not make the biggest ones we could. Although running 13's means not much of a bump steer spacer. Rob loaned me some 13" wheels. So excited to get them on my car