Traxxas 7008 Owner's Manual page 25

WHEELS AND TIRES
The Slash VXL 4WD and E-Revo VXL use 12mm axle hexes which
allow many types of aftermarket tires and wheels to be adapted
for use on your model. Most will affect the overall width and the
suspension geometry of the model. The offsets and dimensions
designed into the model's wheels are intentional; therefore,
Traxxas cannot recommend the use of other non-Traxxas wheels
with different specifications. Experimentation with different types
of tires is recommended to see which ones work the best on the
terrain where the model is run. Soft compound tires with many
short spikes generally work better on hard, dry surfaces. In loose
dirt, a tire with large spikes should perform better. Foam tires can
be fitted for use on pavement or indoor carpet tracks. See your
parts list for accessory wheels and tires.
When selecting tires, consider the overall diameter of the tire.
If the overall diameter is significantly larger than the stock tire's
diameter, you will need to use a smaller pinion gear to compensate
for the larger tire. If you wish to install tires with a diameter greater
than 4 inches or 100mm, Traxxas suggests you configure the
transmission for 'underdrive' gearing. Details on making this simple
modification are available at Traxxas.com.
TR A X X AS • 25