When it comes to using a clay bar on your vehicle, the general consensus among detailing enthusiasts is that you should clay after washing.

Here’s a breakdown of the process and some insights from the Reddit community:

1. Washing First: It's recommended to wash your car thoroughly before using a clay bar. This initial wash helps remove loose dirt and grime, which can prevent scratching the paint during the claying process. After washing, rinse the vehicle well to ensure no soap residue remains.

2. Using Clay: After washing, you can use the clay bar. Some users suggest using the soapy water from the wash as a lubricant for the clay, which can help reduce the risk of scratching the paint. This method allows the clay to glide smoothly over the surface, effectively removing embedded contaminants without causing damage.

3. Post-Clay Steps: After claying, it's advisable to rinse the vehicle again and then dry it. Following this, you can proceed with polishing and applying wax or sealant as the final steps in your detailing proces.

Additional Tips:

• Feel the Paint: Before claying, check if your paint feels rough. If it does, that’s a good indication that claying is necessary.
• Use Proper Lubrication: Always use a clay lubricant or a soapy solution to ensure the clay bar works effectively and to minimize the risk of marring the paint.

Visual References:

Here are some images related to the clay bar process:

In summary, always wash your vehicle first, then use the clay bar, and follow up with polishing and waxing for the best results in detailing your car.