A "reputable" tire shop changed my tires once and later, after the slide and low side I found out they had put 50 PSI in the tires. Probably made a half inch contact with the pavement.

2005 Model . Two Fast Eddy stickers , a bell and a clock . She's Lola . She tinkles and keeps time . http://s649.photobucket.com/albums/uu211/britbike05/