PIT BOARD
PIT BOARD

Auto City Speedway

Clio, MI — 3/8 mile
DIRT OVAL
TRACK SCIENCE · USDA SSURGO
12%CLAY
32.1%SAND
55.9%SILT

Orthents · Well drained

Udorthents and Udipsamments, nearly level to hilly

Inferred profile — buffer ring / regional SSURGO

Moderate clay substrate — drainage and prep response depend on race-night humidity.

Pick your class in Black Book Garage — stagger matrix adjusts for track size and banking.
3/8 mile
SIZE
clay
SURFACE
MEDIUM
BANKING

Eastern MI 3/8 dirt — IMCA modifieds, sport mod, hobby stock.

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HUNTER'S COLUMN
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