Hey, guys. I'm trying to figure out how I should define the sizes of tiles for the new version of my 3D engine and I wanted to make it so that the differences with Stunts were not too big, so that one could, say, race a Stunts track eventually. But when I come to researching what sizes are, I find great inconsistences. Can somebody point me in the right direction?

Basically, there are two approaches as to how to determine tile size. One is what I see has been done in the past and appears in the wiki: you measure the time it takes for a car to race on a road, then measure the length of the road and read the car speed from what Stunts tells you. Take all precautions to maximise precision and calculate the propotion. Doing this, in the wiki, it is estimated that tile length is about 62.5 meters.

On the other hand, a calculation I was making before falling asleep last night, without the computer was this. Second approach. Use common sense and size proportions we know from experience. For instance, I know a car usually fits inside a rectangle of width 2m and length 6m. Typically (and I've just verified this online looking up real cars), an average car can be a little less than 2m wide and between 4 and 5 meters long, but some are less than 4m or slightly more than 6m. Now, we all know that, on a Stunts track, only two cars can fit side by side on a road, so the road must be about 4m wide. The countless times I've been shot up into the air playing Stunts, I've estimated the road width is between a third and a fourth of the tile length. In my renderer, I used a third and it looks pretty much like Stunts. This gives a tile length of 12 to 16 meters.

Of course, I realise that my calculations are not precise and that also, Stunts lies a lot, but I didn't expect the differences would be so huge! What should I do? I'm starting from scratch and I want to choose a good tile width that I will have to preserve for the rest of the project. I would also like it to be as metric as possible. What would you guys recommend?

EDIT: OK, now I've just done what I was supposed to do before posting: I went to Stunts and took an F3 view from high above with two parallel roads, my car and the opponent. It seems the road is wider than I thought. Three cars could fit comfortably, four very tightly. So let's say that's 6 to 8 meters wide. With a ruler, that's almost 3 cm wide on the screen, but from a road to the parallel one (both taking from the same point on the road) there are 14 cm. That gives me somewhat less or somewhat more than 30 meters. Still too small!