Right, have got hold of some ridiculously light OZ Racing wheels off a rally car. But they are meant for the longer and bigger studs used in group 4 / A. They have inserts in them, that take them down to M12 studs, but require longer studs. Can I just change the studs over on my hubs, or can you use an adapter?

Anyone got any hands on experience with this?

you will most likely need to change to longer studs but also i think the nuts are different too?

The other thing is if they are magnesium you have to really look after them.....

Yeah, they are magnesium. To be honest, if they are made for use on a rally stage, they'll probably hold up on the road

Does anyone know any companies that deal with this stuff? I know the Sierra and Escort Cosworth had Group A / 4 wheels on some models, so people must have come across the issue before.

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Originally posted by deezee
Yeah, they are magnesium. To be honest, if they are made for use on a rally stage, they'll probably hold up on the road

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They'll also be lifed for rally use - i.e. a rally team would use them for a set number of miles/hours/stages and then dispose of them whether visibly damaged or not, same as tyres.

That might be why they were available to you?

I appreciate the warning about using magnesium wheels and I'll take that onboard, but I think its all a little melodramatic Also I was asking about fixing to a Sierra hub

you can buy a wheel nut that allows group 4 fitting wheels to be fitted to a standard hub. I think i bought the last ones (long time ago) from rally design.

have a look at www.gartrac.com for their group 4 hubs and axles. they're very different to normal axles.
aren't your current studs m12 thread? if so, just getting longer studs from somewhere like rally design should be fine

or speak to Speedshack, they do alot of wheel studs etc

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Originally posted by madrallysport
you can buy a wheel nut that allows group 4 fitting wheels to be fitted to a standard hub.

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