Trials Car Wheels are often overlooked as a source of weight saving. Anyone who's tried to lighten wheels will know that drilling holes saves practically no weight. Aftermarket wheels, especially off-road types weigh far too much and alloy wheels offer no scope for off-setting and are often too heavy.

I was prompted to do something about them when I needed more inset to cover the reduction gears, but also to use the more popular, and cheaper 14" tyres.

There is a bit of fiddling about to get the profile of the spokes right to weld onto the rim, other than that, the system works.

I've had these wheels on the car for probably 15 years with no trouble at all.

Use the profile gauge to get this shape pretty right. More or less finish the centres, then mount that bit on a hub to get the diameter right.