Common Racing Wheel Questions & Topics
* Base Info Source: Bassett Racing Wheels FAQ's (click here)
Lug Nut Torque Specifications*
Most Steel Circle Track Wheels require a hardened steel 1" oversize, open-ended lug nut with a
45 degree seat chamfer. Before going to the track, always use a torque wrench and torque lugs to 85 ft-lbs. For brand new wheels, make sure to re-torque after the first use because as the powder-coat paint gets worn-off, it can cause the lug nuts to loosen slightly. A good rule of thumb for lug nut torque settings are as follows:
7/16” Wheel Stud = 75-85 ft-lbs 1/2" Wheel Stud = 85-95 ft-lbs 5/8” Wheel Stud = 130-140 ft-lbs
IMPORTANT NOTE & DISCLAIMER: Users should ALWAYS check with the wheel stud manufacturer and the wheel manufacturer for exact torque specifications they should use.
To determine the bolt pattern on a wheel,
use the number of lugs and the bolt circle:
For wheels with an EVEN number of lugs:
Measure CENTER-to-CENTER on lugs directly
across from each other
For wheels with an ODD number of lugs:
Measure from the CENTER of one hole to the
BACK of the second hole as shown at the right.
NOTE: With an odd number of lugs, there is not a lug directly opposite
any hole, so finding the circle diameter can be challenging.
Jump To: Bolt Patterns | Diameter/Rear Spacing
Jump To: Bolt Patterns | Diameter/Rear Spacing | Lug Nut Torque Specs
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Determining the Bolt Pattern of Your Wheel - What is a Bolt Pattern?
The bolt pattern of a wheel tells us the number of lugs (or bolt holes) and the diameter of the circle the lugs sit on.
For example, a 5 on 4-1/2" bolt pattern lets us know we need a wheel with 5 lugs that are spaced out evenly on a circle that has a 4-1/2" diameter.
Knowledge Is Key To Choosing The Right Parts For Your Race Car, Driver & Team
Jump To: Bolt Patterns | Lug Torque Specs
Measuring Wheel Width and Wheel Rear Spacing
The two key measurements to be considered before buying racing wheels
are WHEEL WIDTH and WHEEL REAR SPACING.
WHEEL WIDTH - This may be determined by measuring the distance
between the inner edges of the rim beads. See Illustration "A" at the right.
WHEEL REAR SPACING - To measure rear spacing, place wheel face down,
lay a straight edge or rule across the back of the wheel and measure down
to the mounting pad surface. See Illustration "B" at the right.