See separate entries for Michelin, Kenda, Deestone, Bridgestone.
ATxx (size) will be the best way to search i.e. AT18 - don't forget to click on "MORE RESULTS" above the stocklist entries.
Michelin's CAI number (Code Article International) is in our tube descriptions.
e.g: AT102502MIMBR has the CAI number 155574 and in the resources, you can see: