I'm a "new" owner of a 1998 XK8.

While replacing an upper ball joint (thanks Rev. Sam for the video), I discovered I had lug nuts of different outside dimensions. They are all 1/2 20 inside but 14 are 3/4" and 5 are 13/16". For some unknown reason the 5 odd ones are spread across 3 wheels, and one wheel had a missing lug (buggered threads which I have fixed).

I'm assuming this occurred when they removed the original wheels. I'm not sure what these wheels are from or if they are after market.

The only 1/2 20 lug nuts I have found so far are all 13/16".

In addition to the odd lug nuts, the original growlers don't fit inside the centers - technically they do, but they would fall out after about 3 feet because they don't grab on to anything.

Bottom line, can anyone identify what are the correct lugs for this wheel and is there a growler that fits them?

thanks

 

goingjag:
There should be an identification stamp, probably on the insde of the wheel, that identifies the wheel manufacturer. It appears they are aftermarket. Once identified, then the proper lug nuts can be purchased. It appears that whoever mounted the wheels may have reached for whatever was available. It is important to make sure the proper lug nuts fit the wheel properly should the wheels have a taper or are flat, etc. Regarding the "growler", possibly an adapter is available.

 

Thanks Jag13cat. There is a marking I've seen on other wheels I'll have to figure it out. When attempting to buy replacements I did notice that some were "flat" and others "tapered", which also lead me down the path of wondering about the right lug nuts.

I'll have to do some more research.

 

When I put my Coventry wheels on, I had to get all (20) new wheel nuts. I got them from Adamesh. They are flat.

 

Thanks MRomanik. Unfortunately mine are as nice as your Conventry's!

What I thought was a manufacturer stamp was actually left over sticky stuff from weights that have fallen off. I'll have to take one off and see if there are markings on the back of the spokes.

Thanks for posting a pic of the flat washer, they are similiar to what is on my BMW, so while I have a wheel off, hopefully I can also determine if they are flat inside.

Thanks for the tip.