I have had this happen two or three times when I'm really getting on it in the twisties. It seems to happen after coming out of a corner and when I start to accelerate. It sounds like someone is running an angle grinder on the floor pan, or one of those old fashioned warning buzzers that cars used to have. But if I get off the gas it stops and doesn't come back. It is pretty loud. I can not reproduce in order to get a recording.

Any guesses?

 

My first guess would be a rear hub bearing going out. Detroit Axle sells hubs for an extremely reasonable price. I've had them on my MC40 for three years with no problems.

 

Thanks. Did you do the swap yourself? Easy or an all day with special tools and lots of swearing project?

 

Piece of cake. Jack up the car, remove the wheel, remove the brake caliper/rotor, hub is held by four bolts in the back. 1-2 hour repair at the most if you're proficient with tools.

 

Thanks!

 

Watch the 7/2006 production split year. The rear rotor screws can be a pain.

https://www.northamericanmotoring.co...ut-my-mcs.html

 

Good old shallow torx bolts in an area prone to rust. Gotta love engineers.

 

Yep impact driver tool and when you install a new one, anti seize it up. The threads are oblong.

 

This one got me. My production month was 4/2006. When my LR hub ate itself last year early-design M12 hubs were unobtanium that week so I decided just to 'upgrade' from M12 to M14 bolts at all four corners. Bought NTK hubs, plus the 16 M14 lug bolts of course, not a cheap repair but now I no longer worry about dwindling hub supplies in the distant future when these wear out again.

The very least of design issues on these cars. PB Blaster and an impact wrench are your friends. Order fresh ones in advance and Anti-Seize the snot out of them on install. Tighten to snug; no need to overtorque. No more issues.