They can be purchased from Savvy off road. I talked to them Sunday after ua was over to make sure they were the same sticky tire. And like you said the 37's are a less sticky dot tire. For the pricePumpkin said:The tires they were running are a new tire. The 38's are softer than the 37's (from what the tire guys told me). These will not be released to the public till Feb 2016.