STI's R4 tires are the latest mud tire to hit the market, they are designed to compete with the BKT 171. If you like to play in the mud you've certainly seen tires like these before with the tractor bar lug design. The STI R4 has 1.75 inch deep lugs in the center and 2 inches at the shoulder. The angle is just right on the lugs so you get excellent traction moving forward or in reverse. The deep rim guard on the R4 protects your wheels as well. What really sets the R4 apart is it's super sturdy 8 ply radial carcass, it's massive lugs and it's comparatively low weight.
- Our STI R4 tires generally ship out within 1 business day!
- 1.75 inch deep tread in the center, 2 inch deep on the shoulders
- 8 ply radial
- Excellent traction going forward or in reverse
- Deep rim guard protection
- Excellent performance in the mud
- Lightweight compared to other similar tires