How to measure your trailer rim lug pattern
When you’re looking to upgrade the wheels on your trailer or you need
new trailer wheel hubs, you need to know the lug pattern to determine the
correct size. Typical trailer wheel sizes range from 14-to-18-inch with 4 lug, 5
lug, 6 lug or 8 lug patterns. The lug pattern measures the diameter around the
circle formed by the lugs on the wheel. Two numbers designate lug patterns, the
first is the number of lugs on the wheel and the second is the distance measured
across from each lug, or the diameter.
It is fairly simple to measure the lug pattern on trailer wheels. The
only tool you need to measure the lug pattern on a trailer wheel is a ruler or
tape measure. The technique you use to measure an even number lug pattern is
different from the way in which you measure an odd number lug pattern.
To measure 4 lug pattern wheels, hold the end of the ruler or tape
measure at the center of one lug. Extend the ruler directly across the center of
the wheel to the adjacent lug or bolt to determine the measurement. An example
of a measurement for a 4 lug pattern is stated as 4 on 4 (inches).
To measure 5 lug pattern wheels, hold the end of the ruler or tape
measure to the center of one bolt. Extend the ruler directly across from the
bolt to the space across from the bolt, located in the center of two bolts or
lugs, to determine the measurement. You can also measure odd lug pattern wheels
by placing the end of a tape measure at the back of one bolt, or the side
nearest the edge, skip a bolt and expand the tape measure to the center of the
next bolt to determine the measurement. Boat trailers, for example, commonly
have a 5 lug wheel pattern with the lugs spaced 4.5 inches apart, and are stated
as 5 on 4.5 (inches).
To measure 6 lug pattern wheels, place the end of a ruler or tape
measure in the center of one lug or bolt. Extend the ruler directly across the
center of the wheel to the adjacent lug to determine the measurement. An example
of a 6 lug pattern measurement on a trailer wheel is 6 on 5.5
To measure 8 lug pattern wheels, place the end of a ruler or tape
measure on the center of one lug. Extend the ruler directly across the center of
the wheel to the adjacent lug to determine the measurement. The general example
for an 8 lug pattern measurement is 8 on 6.5 (inches).
You may hear of lug patterns, or the diameter, measured in mm.
Convert inches to mm by using the formula 1-inch is equal to 25.4 mm.
Paul Date 2/25/2014
I'm trying to find rims with a 6 lug 6" bolt pattern can you help?
Mike Date 4/19/2014
I'm looking for a stamped steel 15 x 6, 5 lug 5 1/2" bolt pattern
Tim Date 6/8/2014
Trying to find rims: 15x6, 5 on 5.5, 4.25Bore
Looking for a machined aluminum or chrome plated.
steve Date 9/1/2014
I have just purchased a harbor freight folding trailer. It has 4 bolt rims on it. I was looking at some rims that you have item number TW-TB-24545 BM but they are 5 bolt rims.
Would you have new 5 bolt hubs that would fit on said trailer or do you need more information.
JOE PRETZELLO Date 10/4/2014
need help finding a 6 on 6 x 15 rim.Do you have any available?
Bill Date 3/20/2015
looking for two inexpensive 14" trailer rims with a 5 on 4.75" bolt pattern. yes, I know that's odd. But its what I got!
Gary Ross Date 5/15/2015
I have an old trailer that has 5.30 x 12 tires with a 5 bolt pattern.
when I guaged the bolt pattern the lug spacing is 5.5 or 5 1/2 inch.
I am having a touch time finding a rim. Your help please!
Harlan Date 6/3/2015
I am looking for a rim for my utility trailer. It is 5 lug and the bolt pattern is 4.75, measured from the outside of one lug to the center of the 3rd lug. Do you carry any this size?
Ray and Ruby White Date 7/3/2015
Looking for a vintage travel trailer wheel. 13 " with 4 lugs, 4.5" bolt pattern. Do you carry any this size? If not, any suggestions where I can look further. Thanks!
John Swierczwski Date 7/23/2015
I have a vintage trailer. It has 5.30 X 12 tires. The bolt pattern is 5 X 5 1/2, back of lug to center opposite 5 1/2, center to center 3 1/4. I need a spare for the trailer, can you help ?