[Shawnqa800720]

Hi all,

I recall some threads a while back that were trying to figure out if the move from the 20" wheel setup to and 18" setup would effect the traction and stability control elements of the car when on track.

I am looking to move to a track purpose 18" set, and the tires I plan to run only come in a low profile that is the same as the stock 20" which means I am losing 1" on the tire radius. I know that will definitely impact speedometer, but I am not too concerned about that. I'd suspect traction control would be impacted more than stability control, but it why I'm checking with the experts. Can anyone confirm if this question has be definitively answered?

I do not ever plan on becoming a pro-racer and leave my nannies on when I track to ensure I rarely need to worry about going off-track. I do turn off traction control, but leave stability control in tact. I am outdriving the nannies at this point as they kick on all the time. I know I could be a bit faster with them off now, but at my age, I prefer the safety to a few 10ths of a second.