make offroad vehicles reasonably more "durable "

Description:

If possible (and easily done), maybe have the armor upgrades significantly increase wheel and fuel tank durability?

Reason:

Offroad vehicles are fragile to the point of driving within reason (NOT sending it down mount chilliad!) that they would be fine.

Instead, they stall out easily, fuel tank ruptures and leaks, etc.

As far as "dirt bikes" go, they shouldn't be totaling out on the redlight track in harmony after a couple of laps.