William Rogers, I notice the exact same sensitivity to tire pressures. When I fill my tires, I use a trusted guage, and I try to get the tires to spec (28psi front/30 psi rear?) as closely as possible, no more than 1/4 psi variance. I need to check mine again because I think I might have a leaky left front tire. This Saturday I added 8 psi to it because it was squealing around turns, but I like to check tires cold.

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Bob Roe
Lehigh Valley PA USA
1973 Olds 88, 1972 MB 280SE, 1978 Datsun 280Z, 1971 Ford T-Bird, 1972 Olds 88, 1983 Nissan Sentra, 1985 Sentra, 1973 230.6, 1990 Acura Integra, 1991 Volvo 940GLE wagon, 1983 300SD, 1984 300SD, 1995 Subaru Legacy L wagon, 2002 Mountaineer, 1991 300TE wagon, 2008 Murano, 2007 R320CDI 4Matic 52K, some Hyundai, 2008 BMW 535xi wagon, all gone... currently
2007 Honda Odyssey Touring, 2014 E350 4matic