World's largest wheel (63 inches)

Topy's superior technological prowess gives its construction vehicle wheels high strength, durability, and overall quality. These traits have made them reliable favorites worldwide, and Topy's wheels are supplied to construction and industrial machinery manufacturers in Japan and abroad.

Topy's SGOR wheels are designed for extra-large dump trucks used in large-scale mining operations overseas. These wheels are the largest in the world, with a rim diameter of 63 inches (about 1.6 meters), a width of 44 inches (about 1.1 meters), and a weight of 2.83 tons.
Compared to passenger car wheels, SGORs are five times larger in diameter and 280 times heavier.