I read recently in Sports Car Market that the 1988-1991 BMW M3 has appreciated around 27% in the past year alone, and will likely continue climbing. Not to mention, E30 M3 values have more than doubled in the past five years.

What's going on? Well, a few things. First, tightening supply. Under 6,000 M3s made it to the U.S. during its E30 run, and many of them have been modded, engine-swapped and raced into the ground. Second, the cars have an exciting, compelling racing legacy from a heady time in touring-car-racing history. Third, they're flat-out great cars. That's already a valuable equation. Add some hype to that, and you've got all the makings of an E30 M3 bubble.

And so, I called up a few guys I knew could talk about E30s, and got them to come on AFTER/DRIVE to talk about it. Those guys are Travis (YOU KNOW HIM FROM TEH JALOPNIK) and Mike Prichinello and Zac Moseley from Classic Car Club Manhattan, who've owned several E30 M3s — including one they just flipped for ridiculous money.

What did we decide? Watch and find out.