Unfortunately my 2006 recently had a nail in the side wall, and had to temporary replace only 1 of the tire. That means a different tire and slightly thread depth difference (2/32") on the front-right wheel.

Couple of questions:
A) Could someone take photos and show me what the owner's manual said regarding tire difference allowance in different thread depth? I don't have the owner's manual.

The various tires and thread depth is shown in my attached picture.

B) Could this setup really affect and damage the AWD drivetrain? (difference in thread depth is pretty small, but there's difference in thread design)

C) If this could potentially damage it, how long before it becomes dangerous? (Can I still drive for say 1000 miles?)

I understand I have to replace all the tires soon anyway, but I am exploring whether I should change my wheels, so I am wondering how urgent this is, or could I still hold out for another couple hundred/thousand miles.

D) I am most definitely planning to use MICHELIN PILOT SPORT A/S 3+ for my next set of replacements. Anyone has specific feedback of these on the Bentleys?

Thanks a lot!

 

I'll take a photo of the owners manual this evening, but looking at your tread depths, you need 4 new tires anyway, particularly if you're at a place it may rain.

1/8" or 4/32" is the recommended replacement depth for wet traction. 2/32" or 1/16" is replacement time regardless of weather and you're pretty close to that on 3 of your tires.

I doubt 1000 miles will be a problem in sunny conditions, but I'd suggest you might as well bite the bullet and get a set of 4 now. If you buy 4 continentals matching yours, you'll have a handy spare tire that matches. Plus, if you hit a wet patch or it does damage your transmission, you'll seriously regret not having spent a few bucks in preventive maintenance.

 

ps.. if you're looking at wheels anyway, a set complete with tires might get you a good discount.

 

The manual says replace all 4. But if you need 1. Do 2 on the same axle. And put the on the rear.