Hi
If you adjust with toe out you get more stability in straights, including cross winds. If you adjust with toe in you will have more incisive turns (more twitchy on steering and prone to zig zag). Actually, adding toe in/out, to the set-up, both will shift the center mass of the plane as it rolls on takeoff/landing. Both set-ups add drag and make the nose prone to lower AoA.
Airplanes do not have 4 wheels nor power on these, so we can't just import set-ups used on cars
Any way in racing cars that run on a track (not starights or oval), to have more rear grip you close the rear (add toe in), to have more steering you open the front (toe out), or play with both, depending on grip, tire shore, camber, springs, shock oils, differential, etc.. All set ups have to tune in a band. JackD - its the otherway arround ("
He told me race cars are toe in in front, and to out on the rears.")
For those who care, here's a nice article
https://www.competitionx.com/rc-tuning-toe-in-toe-out/
Have fun ;-)
Nuno