Mixing Two Sets of Tires

Hi All,

My two front tires are nearing the end of its life and I am looking to replace them soon. The ones in the back were replaced ~1.5 years ago with Michelin X Tour A/S and don't need to be replaced. The plan was to replace the front with the same model but it doesn't seem like Costco sells these anymore so I was wondering if it was okay to get the Michelin - Defender T + H instead. I hear its recommend to have the same tires for all four wheels but is it okay to have the X Tours in the back and Defenders in the front?

Thanks!

 

thank you

purchased this vehicle recently and it doesnt look like the last person rotated them. i will definitely be doing so going forward!