When should the U-bolts on a spring suspension be re-torqued after installation?

A) after the first 1,000 miles (1,600 km)
B) after 36,000 miles (58,000 km)
C) after one year
D) they should not be touched after torque is set

Spring Suspension

A type of vehicle suspension that uses springs to absorb shock and maintain contact between the wheels and the road.

U-bolts

Curved bolts shaped like the letter "U" with threaded ends, used to clamp components together, often in automotive or structural applications.