track width question

[downforce21`]

building ramp overs on the trailer and don't have car yet to measure. Can anyone give me outside AND inside track width front and back. blue front Rocket if that matters. Thanks!!

[Punisher88]

I just built a set and built mine 20 inches wide on each side and have PLENTY of Tire on each side. My trailer in 96 inches inside Wall to inside wall as well. I could have gotten away with 18