For those of you that have accumulated significant milage on your 992, at what milage did you replace tires? Tire brand? Front? Rear? C2S or C4S?

 

At 18k miles, splitting time between the summies and winter wheel sets, my rears are pretty close to done. See thread...
https://rennlist.com/forums/992/1251...milestone.html

 

Screw nails and other metal trash usually get mine before wear can claim them

 

16,000 miles rear, 19,000 miles front I would guess.

 

Rears replaced at 13,500 and they were bald. 99% of those miles were 'B' roads in and around the Lehigh Valley. The fronts will make to the 20,000 mile service.

 

Good information on tire wear. I have been wondering if there are significant differences in tire wear between the comport setting and the full load tire pressure settings.

 

I’ve never run ‘comfort’ pressures. Have always set the tires 36/45. Wear was perfect both sides.

 

I've always believed that you shouldn't run new tires on one axle, and old tires on the other. On source indicated that the tread depth of the tires shouldn't vary by more than 30 percent. Has anyone heard of this, and if not, what is considered safe as well as protective of the handling capabilities of the car?

 

That is the case with an all wheel drive vehicle a two wheel drive vehicle there is no reason I know of that you would need to replace front and rear axle tires at the same time. Assuming of course that the tires you are leaving on which ever axle meet all legal and safety requirements.