Love the Mitas Enduro Trail! Great 40 road/60 offroad blend in my book; they stick well on roads and wear well - I went 14k miles on a 2016 R12 Adventure; my only downside is low speed (below 10mph) vibration from the aggressive tread.
2 star rationale: I did get what I ordered (eventually) but buyer beware if you are in a hurry. I had to change my plans without any updates or response from the company in 3 weeks time. For a critical service item, the lack of communication is startling from a company that on its website boasts of customer service pride. My bike is wearing Michelin rubber now because this tire did not arrive in time. I'll change back to the Mitas adventure tires as intended in the future.
For those who want to read on ... I ordered my tire on April 27. I received it May 30. Because tire deliveries can directly impact motorcycle down time, I was interested in an ETA. Sierra was not at all interested in providing one, or in real customer service. Hearing nothing for a few weeks since my order and payment, I used the chat feature in the website 2x (May 14 and May 20) in which the automated text feature replied with a canned "Thank you for texting Sierra Bike & Moto. We have received your message and will get back to you as quickly as possible" and there was zero customer service outreach.
Once the shipping process started, however, the communication was as expected with notifications of shipped, delivery estimate, and delivered as 3 separate communications.
This tells me the company is set up for non-human automation, and they admit to selling you products they don't have in stock which leads to long, frustrating, zero-communication delays. This is where Sierra's business model is flawed ... plenty of competing sites will give you an "out of stock" prompt and not allow you to place in your virtual cart. For Sierra, cash flow trumps satisfied customer service.