Hello. So we purchased a new Shasta Oasis 25rs in January 2016. The tires are 205 75 14 load range c. Constancy tires. (no doubt made in China) We drove it to Seattle and back to Salt Lake City approx...
I would just inspect closely for uneven wear etc. and just run them for 24 months. Then just replace with a quality tire such as Maxxis or GY Endurance.
I am not really sold on the TPMS that attaches on top of the stem. For me it would be either OEM style internal TPMS stem or go without.