Thanks for reaching out!

We're glad to hear that you enjoy the tires that came with your bike. If you're looking to replace them, you'll want to look for a tire with similar dimensions, that is, 700c x 40 mm. Here are the options REI offers in that size. It looks like the DONNELLY X'Plor MSO Foldable bike tire is the most similar to the Kenda tires you have on your CTY 1.1, however, it is a bit more knobby to give better traction on gravel and non-paved surfaces. Another option would be to stop by your local REI bike shop and speak with a bike tech about what other tires may be available either in store or to order. It is important to remember that there are significant manufacturing shortages and shipping delays happening, particularly in cycling, so options are somewhat limited at this time.

Hopefully this helps, thanks!

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