Spencer Dinwiddie is suing a famous car shop in Los Angeles ... claiming the company botched a deal involving a Ferrari and a rare Mustang so badly, it's caused him quite the headache.
In the lawsuit, obtained by TMZ Sports, the NBA star says he first got into biz with Wires Only -- a custom automotive co. that's helped trick out cars for celebs like Bad Bunny, Kim Kardashian and Travis Barker -- back in November 2022 .