Shopify Tag has a limit of 250 tags.
If you sell auto parts on Shopify, you probably want a Year Make Model filter on your website.
There are a few app that allow you to have a YMM filter on your homepage, which uses Shopify Tag System.
Unfortunately, the tag system was never built for filtering auto parts and you would reach the limit of 250 quickly, which means you can only add about 50 vehicles to it. Not only that, your site speed would be slower.
A better way for YMM
As part of our auto parts inventory management system, we provide an API Vehicle Filter (YMME) that seamlessly integrates with your Shopify store. Your customers will be able to browse your site with our filter.