That's where I would start as well. I've had Miatas for years and they are well known for having a 30/60/90 mph shudder if the wheels aren't perfectly balanced. You get a specific set of harmonics going at a certain speed.
That's where I would start as well. I've had Miatas for years and they are well known for having a 30/60/90 mph shudder if the wheels aren't perfectly balanced. You get a specific set of harmonics going at a certain speed.Get your tires balanced. You probably threw a weight.