Little math problem :-/ (hopefully not big)

Blitz3D Forums/Blitz3D Programming/Little math problem :-/ (hopefully not big)

The forum is locked. These are the original blitzbasic.com forums, kept so they can still be read. No new topics, replies or edits can be made here. To join in, head over to the Blitz3D+ forums.

I've got quite a lot of my car physics working fine, but there's a slight little problem, as most of my math sucks.

However, I got a little equation telling how much pressure a tire must be able to handle to not skid during a turn in R radius at V speed. The problem is that that equation requires me to know the radius I'm currently turning in (of the whole circle).



Lets say during last calculation (60 times a second) my car was at the green spot (Coords: ABC), this cycle, it is at the red spot (Coords: XYZ).

Out of those two positions, how can I figure out R?