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I have just bought some st170 focus wheels for my fiesta mk6 2007. The wheel sizes should fit and the bolt pattern is the same at 4x208.
Today I tried to fit one of the wheels when I realised that the holes for the bolts or lugs are much bigger on the new alloys than on the steels that are currently on the car!
I have looked everywhere and can only find people asking about the centre hole being too big, not the diameter of all the individual bolt holes. Does this matter? And if so, what can I do to fix the problem? Is there a spacer-nut I can get which will help fill the gap between the thread and the alloy?
The old steels slip on and off the bolts snug and the new wheels have much wider holes for the lug holds to go through.
I have ordered some genuine nuts from Ebay! Thanks for all the suggestions!
One last question if I may...
When I temporarily fitted the new alloy wheel on the rear of the car it rubbed ever so slightly on the flexible lining of the inner/rear of the back arch. I could simply hold the lining out of the way with my hand but was wondering what I should do when I come to fit the wheels, do I need spacers or do I just push the lining back and hope it holds?
I would have thought they'd fit ok. ST150 wheels are 17x7Jx47 offset so not too different to the ST170 ones. If the tyre profile is too wide and/or tall that might be the problem.
If not, it's pretty easy to fit rear axle spacers up to 25mm thick, or you could use hubcentric spacers.
If you mean the corrosion on the mating face, give it a light rub over with a bit of wet and dry sandpaper to make it smooth/flat. A light smear of copper grease onto the mating surface before fitting will help reduce corrosion.
Today my nuts arrived so I decided to take a more in depth look at the wheel clearances and fit.
As you can see, the rear wheel is 'dragging' against the inside material but is barely touching with any pressure - the other rear wheel (havent fitted yet) doesnt seem to have such a baggy material wall - I'm guessing this will be fine, might just have to hold the material back somehow.
The nuts look great so thanks for the help!
The front DS wheel is good, it is positioned below the spring however, is this a problem? And when on full lock left, if presses against a plastic in the arch on the front, will test to see if the standard steels do this tomorrow!
The HUB of the car only comes through the alloy a couple of millimeters, should it come through more or is this okay?
PS. On the topic of the rear of the wheel removing corrosion, I mean the inside rim of the wheel, not the mating face - its just a bit bubbly (the paint)