There are two different sizes of TireBlocks for 10-inch front rims and 9-inch rear rims. The rear
is the wider TireBlocks, while the smaller version is for the front. Depending on machine and tire
selection, you may use the same-size TireBlocks on all four wheels.
We suggest setting up
a table or a bench to
install the TireBlocks.
This will prevent a
sore back or muscles,
because install time
will take around two
to three hours to
complete the full set.
First on the to-do list is to drill (completely through the valve
stem) two 1/16-inch holes into the inside portion of the valve
stem. You will do this on each wheel.
Next, cut the small plastic tube around 1/8th of an inch with a
pair of wire cutters. You will want to cut a total of four tubes.
Place the 1/8-inch tube on a straight pick or even the
drill bit that was used to drill into the valve stem.
Force the tubes through all four holes on the valve
stem. It’s okay if they’re sticking out a bit.
The valve stem should now look like this picture. We did this
so that the air has multiple exits, even if the TireBlocks are
resting on the valve stem. It’s also crucial to do this to get an
accurate reading on your tire gauge when inflating the tire to
the correct air pressure.
We suggest removing the valve-stem core completely before
installing the TireBlocks. Not only does it help with letting air
escape when mounting the tire, it also has another purpose
that is a bit of a pro trick, which we’ll get to later, that will
help seat the bead quickly.