tires are always going flat

I bought a set of the CS4's in October and I can't wait until Spring when I can replace them with Michelin's. I have taken the tires back to the dealer over 25 times for the same issue. They are constantly loosing air pressure and going flat. I replaced my valve stems thinking that the issue was with those, but its with the tire, they do not hold pressure. It's never just one tire at a time I have had to stop and put air in all 4 at one time before.

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Sep 09, 2016
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starstarstarstarstar 		Problem tires NEW
by: Anonymous

I went to back to the dealer yesterday because I have had constant problems with these tires. The dealer informed me that Cooper knows that there is a problem with these tires. They are known for bead leaks and for not getting even close to their mileage warranty promise. I got about 30k out of the 60k mile tires. The dealer should prorate the tires for you as long as you can prove that they have been rotated approximately every 5k miles. I won't buy Cooper again. The dealer suggested Yokahama, so that's my new tires.
Sep 12, 2014
Rating
starstarstar 		lose air below 40deg NEW
by: bob armer

thank you . I thought it was me !
TIRES LOSE AIR IN COLD WEATHER !!!
they will drop by 2-3#'s weekly ... have had wheels pulled apart , cleaned , new valves ..
twice .. N.G ,.
Aug 05, 2014
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starstarstarstarstar 		rims NEW
by: Anonymous

check your rims. they may not be making a good seal.

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