tends 
canadian tire tread depth test: put a toonie into your tire such that the tire tread underlines the number 2. if you can see the bottom of the numeral, you have too little tread and need to change your tires
spent some time dicking around with a measuring tape and all my coins to figure out an alternative to the "george washington's head on the penny" test that doesn't rely on what monarch is on your coin
Steve2734🇨🇦