Hello, I have a trailer with runners and the distance between the inner edges of the runners is 40". Can someone be kind enough to measure between the tyres at ground level on a PA please to let me know if my trailer will be suitable. I know the track is 43" according to the internet, but is that between hubs, or where the tyres touch the ground, as these cars seem to have a camber which might make ground level measurements narrower. My Austin Nippy didn't quite fit within the runners and had to rest on the edges.