Go-Pod wheels are: 4 ½ J x 13 H2 ET30.
The “4 ½ J x 13” part of that is the size of the wheel rim – in this case it has a depth of 4 ½ inches and a diameter of 13 inches. The “J” represents the shape of the tyre bead profile (you don’t need to worry about this). The “H2” means that this wheel rim is designed to take “H” speed-rated tyres. The “ET30” figure shows that these wheels have a positive offset of 30mm.


