Ok, I wanted to run this by everyone and see if anyone has had experience / discovered what may have caused this.
I have a 2012 boss 302, have run 18x10 wrapped in 305/680/18 DH slicks with no problem on track. I purchased a new set of wheels (18x10.5) and wrapped them in a different set of DH slick 305/680/18 which were purchased as scrubs from e-bay with "4 heat cycles". To be fair, the tires were quite sticky at VIR this past week, so I want to believe they are low use tires.
The issue arose as the car climbs to 120+ mph, it begins to feel unstable... the car wants to pull left or right and track what feels like 5+ feet from one side to the other. This isn't a great sensation going up the hill at VIR. It was so unnerving that during my session I kept it below 130 as it was simply too sketchy. I brought the car in, inspected everything at the on site speed shop (put it up on a lift). No issues with the car, took it back out and had the same issues. It seemed to be worse as I increased the speed and would feel as if the car wanted to come around under hard brakes. I came back in... I sat, thinking about what I had changed since my last time out and decided the only difference was the tire / wheel setup. I swapped my new 18x10.5 wheels and tires for my other set of 18x10 with the same size DH slick (these and proven to be great at Mid ohio just a month or two back).
I head out for the next run, as I climb up to 130 the car feels great... pushed it all the way up into the 145+ range no problem! No more issues whatsoever...
So, I clearly, it is an issue with these tires (or one of them)... but if they are VERY sticky and look to be in good shape, could there be something wrong inside the tires (belts etc... I don't know) and has anyone dealt with this before? I would love to find a way to determine which tire is causing the issue but I doubt something like a balance machine is going to help as all 4 tires balanced perfectly and there were no shakes or vibrations... rather the entire car wanted to move left to right.
Thoughts?
I have a 2012 boss 302, have run 18x10 wrapped in 305/680/18 DH slicks with no problem on track. I purchased a new set of wheels (18x10.5) and wrapped them in a different set of DH slick 305/680/18 which were purchased as scrubs from e-bay with "4 heat cycles". To be fair, the tires were quite sticky at VIR this past week, so I want to believe they are low use tires.
The issue arose as the car climbs to 120+ mph, it begins to feel unstable... the car wants to pull left or right and track what feels like 5+ feet from one side to the other. This isn't a great sensation going up the hill at VIR. It was so unnerving that during my session I kept it below 130 as it was simply too sketchy. I brought the car in, inspected everything at the on site speed shop (put it up on a lift). No issues with the car, took it back out and had the same issues. It seemed to be worse as I increased the speed and would feel as if the car wanted to come around under hard brakes. I came back in... I sat, thinking about what I had changed since my last time out and decided the only difference was the tire / wheel setup. I swapped my new 18x10.5 wheels and tires for my other set of 18x10 with the same size DH slick (these and proven to be great at Mid ohio just a month or two back).
I head out for the next run, as I climb up to 130 the car feels great... pushed it all the way up into the 145+ range no problem! No more issues whatsoever...
So, I clearly, it is an issue with these tires (or one of them)... but if they are VERY sticky and look to be in good shape, could there be something wrong inside the tires (belts etc... I don't know) and has anyone dealt with this before? I would love to find a way to determine which tire is causing the issue but I doubt something like a balance machine is going to help as all 4 tires balanced perfectly and there were no shakes or vibrations... rather the entire car wanted to move left to right.
Thoughts?