7j and 7k alloy wheels

Hi there,

The alloy 3 spoke wheels on my 90 vogue are nasty to look at from peeling lacquer and subsequent corrosion. So I picked up some cheap replacements from an older model.

The new wheels are a 7k according to the rim stamp, apart from one which is a 7j. I think there is a mix of ages of wheel as the stamp text is slightly different between them. The 7k is annoyingly the wheel in best condition so I'd like to use it with the other 3 7j wheels (the 4th 7j wheel is a bit nasty). I know the k or j just refers to bead shape and it does have a different make tyre (same dimensions) to the other 3. But theoretically, would this make a huge difference if I used the 1 k wheel and 3 j wheels?

Thanks

I think the "j" or "k" is just the rim profile

im sure you can find this info on the net

maybe the risk is the MOT if somebody sees it - on the other hand are approved rims specified on the registration document in the UK ?