Technicians vs. DIYers: How well can you gauge tire pressure?

After seating the bead on a new tire, the valve core needs to be installed and the tire inflated to the correct pressure. Some techs can air up a tire, install the core and land right on the target final pressure… but it’s not as easy as it looks. In this challenge, techs and DIYers get as close as possible to a target final pressure to see who’s got the best skills and strategies at the tire machine.
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[@虞洪一]

My Golf has the same problem,how can i contact with you?