The front tires on my John Deere L100 started to crack and I had to add air every week. I really didn't want to change the tires because they still had so much tread, so I put these tubes in instead. This is not a very difficult task and there are many videos on the internet demonstrating various techniques. I really should have done this a year ago instead of pumping them up every week. They are "Made for Firestone" in China.
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