Mounting 2x4 backer for a heavy-duty wall tire rack — Structural Screws vs. Standard Wood Screws?

Mounting 2x4 backer for a heavy-duty wall tire rack — Structural Screws vs. Standard Wood Screws?

Hey everyone,
I'm mounting a 2x4 backer board to my garage wall studs to support a wall-mounted tire rack (holding ~200–300 lbs total).
A couple of quick questions:

  1. Structural Screws vs. Wood Screws: Should I strictly use structural screws (e.g., GRK or Simpson Strong-Tie) instead of standard wood screws to handle the continuous shear weight?

  2. Screw Length: Are 4-inch screws the right size? (1.5" wood + 0.5" drywall + 2" stud embedment)

u/regott — 12 days ago

TFSA - 33Male

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