@leopard20_dev

Summary

Currently vehicles experience no difference in drag/rolling resistance between surface types. A vehicle free rolling on asphalt and one free-rolling on grass behave the same, which removes any real incentive to use roads offroad driving is nearly as fast as on-road in most vehicles, with no meaningful downside.

Proposal

Add surface-dependent drag so that:

• Asphalt / roads low rolling drag (fast)

• Grass / dirt / offroad terrain → higher rolling drag (slower)

This creates a clear pros/cons tradeoff for diverting from roads

Synergy with the tire system

This pairs well with the newer tire system:

• A vehicle like the S105 shoud be noticeably worse offroad.

• Offroad-oriented vehicles (e.g. the Willys) would have a clear advantage off-road with offroad tires.

• Offroad tires would trade that advantage for more friction (and therefore reduced speed) on smooth surfaces like asphalt.

Video showcase from a mod i made, but values was set very high just to illustrate the terrain slowing down the vhiecle