WTB Venture Gravel Tire review: #FAIL

I was in the market for a new high volume multi-use tire for my adventure singlespeed bike. After much research and scouring through countless reviews, I arrived at the Wilderness Trail Bikes (WTB) Venture series (700x50) pictured below.

They have the tread pattern I was looking for, which is kind of smoother rolling down the center with a relatively small "chevron" tread pattern and larger, wider spaced knobs along the edge for cornering on loose gravel.

The tires mounted tubeless very easily. and held air quite well (at first). 

For the maiden ride I  inflated them to 26 psi and they felt amazing. Like riding on firm pillows. Very supple with a lot of grip. I didn't get into any mud but I really don't ride much in mud so I wasn't concerned about wet conditions. Big loose gravel was not a problem and they were smooth rolling on hard packed surfaces. I REALLY liked the ride from these tires. I couldn't wait to see how they held up to harsh Oklahoma "B" roads. 

Well, it didn't take long. After about 300-400 miles, the tires developed small sealant leaks though the sidewall (see photo). They were always wet and slowly lost air over a couple of days. I called WTB and they said it was a defect and promptly replaced them. Good customer service. *For the record, I was using Orange Seal sealant (regular)*

I have since spoken with other riders that have experienced the same thing with another WTB gravel tire. I am not certain if it is only an issue with the skinwall version. The blackwall might have thicker sidewalls and not exhibit this issue but be aware if you are considering this tire.

I will also say, I have another set of these in 700x40 on anotehr bike and it took a little longer, but they have started to develop the same issue. I have not filed a warranty claim yet, but probably will.

Too bad because I really liked these tires, but you can't have a tire that leaks sealant. That kind of defeats the purpose.

UPDATE: I have since switched to Continental Race King on this bike and will review those in a later post.