u/nsphansa

For my Audi Q3, the right rear tire went over a curb, and it popped. There's a hole in the side wall. I don't think it can be repaired and the tire will need to be replaced.

Can I just replace that one tire or will I need to replace the other tire on the same axle? The other non-damaged tire has about 6k miles on it. FYI - The tire size is 255 40R20.

Because Audi Q3 utilizes the Quattro all-wheel-drive (AWD) system, I am unsure if it is recommended to have a mismatch in tread depths since one tire will be newer than other, and it could mess up the Quattro system.

The other problem I am facing is that the current tire is the Michelin Primacy MXM4, but they seem to be on backorder. If I can't find a Michelin Primacy MXM4, then it is advisable to have different models on either side of the axle? (e.g. Michelin Primacy MXM4 on left, and a Michelin Pilot Sport All Season 4 on the right). This just doesn't seem right.

Would love your thoughts. Thanks in advance!

For my 2023 Q3, none of the driver assist functions are working. Here are the errors I see in the dash:

• Stabilization control (ESC): malfunction
• Hill hold assist: unavailable
• TPMS Tire pressure: malfunction
• Parking Aid: malfunction
• Vehicle starting system: malfunction
• Audi pre sense: currently limited
• Traffic sign recognition: malfunction

The problem started after the vehicle battery drained because the car and the AC was ON for a long time while the engine was turned off. A jump start got the battery going, but the malfunctions started immediately after that.

I had the battery checked out at Autozone, and the battery is good.

Do I need to take the car to the dealership (it's still covered under warranty) or is there anything I can do to fix it (I am thinking of something like a software / system reset).

The car (engine) itself runs good. Is it safe to continue driving in this state?

Would appreciate some pointers. Thanks!