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FYI to iamloser: the model airplane tires are designed to take a 20-30# RC airplane landing at speeds of up to 30 mph. They don't wear apart; at least the ones that I've seen on planes with 200+ landings. Solid rubber tires have issues with weight and compaction---they don't grip as well. Also, they're NOT foam rubber, they're an open-celled rubber composite.
They usually outlast the planes they're put on---the planes eventually crash, the tires are still good, but the plane is balsa and plastic scrap.
They usually outlast the planes they're put on---the planes eventually crash, the tires are still good, but the plane is balsa and plastic scrap.