Or, you can rely on your brain and a tire gauge.
Sorry, couldn't resist.
2010 Inferno Orange 2SS/RS M6 Black Leather,Sun Roof, OBX Headers, Haltech CAI , non synthetic fluids, Mike Norris tuned 419/413
2015 Ford Interceptor// 2007 Ford F150 XLT 4X4
Avenging Orange: 39 years of not buying into the Hype........and damn proud of it!!