It may or may not be the inner lip. From my research the inner lip on a stock semi wheel is kind of like " | \__/ | " that and a stock inner lip looks " ||__|| ". If that makes any sence...

We attempted this process when we first started these wheels almost 10 years ago and it still has not been done today. You can mill the wheel but the edges are paper thin and out of the 2 wheels we did, both cracked when applying air pressure to seat the beads on the tires. That was all I needed to see to know that it was not a feasible process on the steel wheels.

The problem with making the new steels in 22s they will be more expensive than the aluminums we already sell.

We can make a set of aluminums that look like any of the 2, 4, or 5 hole steels you see on the road. They will be lighter and will be stronger.