What is a good tire tread depth for my BMW 4 Series?

I have a BMW 4 Series and I'm wondering what is a good tire tread depth for optimal performance and safety. I frequently drive on highways and want to make sure I have enough tread to handle wet and slippery conditions. Thank you.

Ideally, you want to have at least 4/32 of an inch of tread depth on your tires. This will provide enough grip and traction for the conditions you described.

You should regularly check your tire tread depth and consider replacing your tires when they reach 3/32 of an inch. This will ensure your safety on the road, especially in wet and slippery conditions.