Was hoping to get the Miata back from the shop today so I could leave for Colorado tomorrow. Got a call from the shop this morning that went something like this:

Shop: We’ve diagnosed the whining noise you thought was coming from the front-right wheel well. The sound is coming from your diff, which is going to need a rebuild. It’s only early-mid stage, so it doesn’t need to be rebuilt immediately.

for Michigan: How long do I have before it needs to be rebuilt?

S: We would like you to bring it back in about 100 miles.

M: I’m driving the car from Ohio to Colorado as soon as I get it back.

S: Let me get back to you with an estimate...