Hello everyone! I came here in search of a little information for a
strange problem I have. I live in the US and purchased a set of C-Max
wheels from someone and now I need a special lugnut to use them so I was
hoping I can get some ideas, and maybe help others out.[img]smileys/smiley1.gif[/img]
In the UK, the vehicles are fitted with M12 x 1.5 wheel studs and the alloy wheel nuts have a 60 degree tapered seat. The steel ones are hemispherical. If your vehicle has any other thread (Do you still use UNF/UNC in the US?) the ones I have shown you will not fit.
Hope this helps.
Thank you for the reply and the info! the wheels in question are Alloy
Luckily my vehicle and most here have the M12x1.50 stud thread you
mentioned. It looks on the wheel itself as if it needed an Extended Thread nut that goes down inside the wheel, then tapers. But I could definitely be mistaken. I have more photos of the holes on the wheels here: http://s168.photobucket.com/albums/u168/Mobius-7/Lugs/
Although they don't look like any of the wheels I've seen fitted to C-Maxes here, they will probably have the 60 degree seat which is quite standard on both OEM and aftermarket alloy wheels. Perhaps if you got a piece of dowelling that will fit in the hole and put a piece of kids play doh (plasticine?) or modelling clay, on the end, you may be able to make an impression of the base of the hole and then you'll know for sure.
It really doesn't matter whether the nut has a parallel section below the taper or not, as it is the taper which helps to locate the wheel. The ones from my C-Max don't. The main thing is to ensure the centre hole is correct, and that the nut is tall enough to ensure that the stud doesn't bottom out. Fords (in the UK and Europe anyway) most commonly use a 63.4mm centre with either 4x108 or 5x108 stud PCD. There are a few exceptions, mostly where other manufacturers vehicles were "badge engineered". The "Probe" was a thinly disguised (and frankly bl***dy awful) Mazda, and the (much better) Galaxy MPV was shared with VW and SEAT.
This web-page is a handy guide to wheel fitments. http://www.carlsalter.com/wheel_fitments.html
It even has a few US brands listed. As long as the PCD, and centre are right and the offset is within a few mm they should be OK.
Yeah the testing lugnuts i ordered all have those dimensions, so i'll
take it to the fitters and see if they'll work. If so i'll order more to
complete the job. Strange thing also is i tried searching for info
based on the wheel model number and found nothing on this particular