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WARP TEN · 09-30-2017

My cars were usually stored for three to four months, first on a garage floor then on a lift. With both the cheaper Sumitomos and with the Michelins, I routinely used higher than normal pressures during storage with a note taped on the steering wheel to remind me to return the pressures to normal in the Spring. On the advice of a guy who services and stores a lot of very high end cars, I was originally setting the pressures at 60 psi which worked fine to lessen flat spotting for many years. But I eventually got a slow leak on one of the Michelins on the 95 that turned out to be a bad valve. When getting it repaired I was told (at Costco where they replaced it for free) that valves are officially only warranted to 40 psi. Still, that was the only time I had had a problem, so since then I have used about 50 psi with no issues. Any residual flat spotting usually went away with an hour of driving. --Bob

09-30-2017	#13
WARP TEN Join Date: Apr 2007 Location: Lake Bluff, IL Posts: 2,141	Re: Square Tires! My cars were usually stored for three to four months, first on a garage floor then on a lift. With both the cheaper Sumitomos and with the Michelins, I routinely used higher than normal pressures during storage with a note taped on the steering wheel to remind me to return the pressures to normal in the Spring. On the advice of a guy who services and stores a lot of very high end cars, I was originally setting the pressures at 60 psi which worked fine to lessen flat spotting for many years. But I eventually got a slow leak on one of the Michelins on the 95 that turned out to be a bad valve. When getting it repaired I was told (at Costco where they replaced it for free) that valves are officially only warranted to 40 psi. Still, that was the only time I had had a problem, so since then I have used about 50 psi with no issues. Any residual flat spotting usually went away with an hour of driving. --Bob __________________ 2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" Last edited by WARP TEN; 10-02-2017 at 10:39 AM.