I will be interested in how you like the M defenders. I bought 4, 20 inch for my F150. I was cautioned before the purchase. After getting them installed, I had 2 that would not run smooth. First they chattered, vendor paid for road force variance balance and they were worse. I paid for a regular balance and still the same.
Fortunately vendor took them back. I was out mounting and balancing twice.
Not the vendors fault. Guys on the internet warned me of the problems. The guys mounting the tires, told me similar tales.
My tire dates were fairly new and made in Brazil. ?
Hope you have better luck.