Suspicious that you've got a leak in your tire but not sure. Try this simple tried-and-true tip from the pros. Photo by modenadude.
Blogger Pinny Cohen's mechanic taught him this painless method for quickly and easily detecting leaks, no special equipment required:
The last time I thought a tire had a hidden leak, he whipped out a spray bottle with a 20/80 mix of liquid soap and water. I was about to tell him "thanks, but I just got a car wash done the other week" when he started spraying the tire. In a small area by the rim, I noticed a neat effect. Bubbles started growing and bursting at a fast rate – a leak!
It's not a new idea, but it's one of those clever little tricks that's always good to know. Got your own simple but clever tricks of your trade? Send an email to tips at lifehacker.com with the subject Tricks of the Trade and we may feature it here.
Update: As editor Jason Fitzpatrick is quick to point out, this trick works for anything that's pressurized. "Any time a guy is out working on my gas line he always sprays the new connections with soapy water and checks for bubbles."
Check For Tire Leaks With Liquid Soap [Life of an Entrepreneur]