However, there's more to making sure old car tires are still safe than kicking ... You could consult your owner's manual, online vehicle specifications, or the numbers and letters present on ...

Based on our tests of new and half-tread-depth tires, you may want to consider shopping for new ones on your car or truck closer to the 4/32-inch groove depth. For more information on this.

[Michael Rectin] is in on the action, and he’s been exploring how to 3D print a decent set of tires to help his RC car reach higher speeds mph. His first efforts involved experiments with TPU.