Hi guys, I have e-commerce site, that sells car tires. I was wondering would I benefit from making all Product Variants ( for example each tire size ) as different page, that has link to the main product to provide some affiliation, or should I make each variant noindex, and add rel=canonical to the main product. The benefits from having each variant indexed can be many: greater click through rate more relative results for customers etc. But I'm not sure how to handle the duplicate content issue ( in this case, only the title, URL and H1 can be different ). Regards.