Is it OK to drive without valve cap?

It is generally not recommended to drive without a valve cap on your tire's valve stem. Valve caps serve several important purposes:

Protection: Valve caps help protect the valve stem from dirt, dust, moisture, and other debris. Without a cap, these contaminants can enter the valve stem and cause damage or corrosion, potentially leading to air leaks or tire damage.

Sealing: Valve caps help maintain the seal on the valve stem, preventing air from escaping and helping to maintain proper tire pressure. Even a small air leak can result in underinflated tires, which can affect handling, fuel efficiency, and tire wear.

Identification: Valve caps can also be used to indicate the type of valve stem (e.g., Schrader or Presta) and provide visual cues for tire maintenance or inflation.

While driving short distances without a valve cap may not immediately cause issues, it's still advisable to replace the cap as soon as possible to prevent potential problems down the road. Additionally, if you frequently drive in dusty or dirty conditions, keeping the valve stem protected with a cap becomes even more crucial.