Wheels of Fire (1985)
Dir. Cirio H. Santiago.
If you're suddenly thinking of Manowar, then you have my utmost respect, but the movie predates the song by three years. Oh well; it was a pleasing thought while it lasted.
WoF is set in a post-apocalyptic wasteland scenario. With no law to stop them, many people get their kicks being total dicks towards other people. But not Trace (Gary Watkins). Trace is a man of some honour who mostly looks out for his sister Arlie (Lynda Wiesmeier).
If Mad Max rip-offs have taught me anything of value, it's that post-apoc survival requires a pair of well-worn leather kecks and a part luck / part skill ability to drive on dusty roads.
The acting is as you'd expect for this kind of thing, but the car chases are excellent; if someone was to edit them into The Road Warrior (1981) and claim it's an extended cut, then many people could be fooled.