Home
- 2022 Top Trends
- Driver
- Racecar
- BMW
- Corvette
- FR-S / BR-Z / GT86
- Honda S2000
- Miata
- Batteries & Chargers
- Brakes
- Car Care
- Clutch Kits
- Data / Video
- Electrical / Electronics
- Exterior Accessories
- Fire Systems
- Fuel Storage
- Harness & Restraints
- Harness Bars and Roll Cages
- Heat Insulation
- Hose & Fittings
- Interior Accessories
- Oil Coolers & Adapters
- Oils & Fluids
- Seats
- Seat Mounting
- Steering Wheels & Accy
- Suspension
- Transponders
- Underhood Accy
- Window & Cage Nets
- BMW
- Carbon Fiber
- Set-Up & Trackside
- Karting
- Youth
- AMP Pro Shop
- Clearance
- Gift Cards
- Careers @ DiscoveryParts
Trending
Special Products
Alpinestars Heritage Blaze Tee - Women's - Black
$10.98 $21.95 -50%
Alpinestars Heritage Blaze Tee - Women's - Navy
$10.98 $21.95 -50%
Alpinestars Heritage Blaze Tee - Women's - Pink
$10.98 $21.95 -50%
Discovery Parts Store

Tread Depth Gauges
Super accurate, easy to read and easy to use, tire tread depth gauges let you decide what tire goes in what position. On a left turn intensive track for a sprint race, we would use a tire with less tread block on the right side to heat up sooner. Now the same car getting ready for a 4 hour enduro will opt for the tire with the deeper tread block to last longer, hopefully not needing a tire change the entire race. Tire tread depth gauges are calibrated in 1/32" and are accurate to 1/128" (less than .010"!)
There are 3 products.
Longacre Digital Tread Depth Gauge w/Case
In Stock
Longacre 50565 Digital Tread Depth Gauge w/Case keeps the highest value racecars at the front of the pack. Longacre Digital Tread Depth Gauge w/Case is a trackside favorite with many teams from ChumpCar to Grand-Am.
$274.99
Longacre Analog Durometer/Tread Depth Gauge w/Case
Last items in stock
The Longacre Analog Durometer/Tread Depth Gauge w/Case keeps the highest value racecars at the front of the pack. Longacre Analog Durometer/Tread Depth Gauge w/Case is a trackside favorite with many teams from ChumpCar to Grand-Am.
$119.99
Longacre Digital Durometer/Tread Depth Gauge w/Case
Longacre 50557 Digital Durometer/Tread Depth Gauge w/Case keeps the highest value racecars at the front of the pack. Longacre Digital Durometer/Tread Depth Gauge w/Case is a trackside favorite with many teams from ChumpCar to Grand-Am.
$154.99