I’ve got about 100 miles on these tires on a variety of trails- asphalt, concrete, packed dirt, loose rock, grass, etc. No complaints.
Razor 200x50 Tire & Inner Tube Set (e100/e200/Dune Buggy/Epunk) https://www.amazon.com/dp/B0021XPF9U/ref=cm_sw_r_cp_tai_iM3sDbSN49WNB