Fender Inflation Guide

Twin Eye Smooth
Product Max. Circumference
4.5 x 16 13.4 in (34.0 cm)
5.5 x 20 17.4 in (44.2 cm)
6.5 x 23 20.4 in (51.8 cm)
8.5 x 27 26.8 in (68.0 cm)
10 x 30 33.1 in (84.0 cm)
12 x 34 41.5 in (105.4 cm)
Twin Eye Ribbed
Product Max. Circumference
4.5 x 16 13.4 in (34.0 cm)
5.5 x 20 17.3 in (3.0 cm)
6.5 x 23 20.4 in (51.8 cm)
8.5 x 27 26.7 in (67.8 cm)
Maximum Pressure
Diameter Max. Inflation Pressure
4.5" 2.0 PSI
5.5" 2.0 PSI
6" 2.0 PSI
6.5" 2.0 PSI
8" 2.0 PSI
8.5" 2.0 PSI
10" 1.5 PSI
12" 1.5 PSI
Center Hole Ribbed
Product Max. Circumference
6 x 15 18.9 in (48.0 cm)
8 x 20 25.1 in (51.8 cm)
10 x 25 31.4 in (67.8 cm)
12 x 34 38.0 in (83.8 cm)

Note: In the absence of a pressure gauge, fill fender until sidewalls are firm, but not bulging. Fender should still compress 1/2" under light pressure. PSI is corrected to 20°C. Moisten inflation needle prior to inserting into the fender.