Section 8
Observer
The little center cap about 2 1/2" in diameter in the very center that covers the castle nut that holds everything else on. Most aluminum wheels have the caps on them, and it contains a logo of some sort.
Kids in my area had taken to leaving the center caps off their wheels and painting that nut a color that matched their brake drums, and what ever they could paint a contrasting color.
The cars/trucks I have taken apart, have the same castle nut that is displayed in that picture, but they don't have the domed cap on them. I have a feeling that it is because trailers have steel wheels with minimum thickness, that when you bolt them to the wheel mounting surface, the hub pokes through the wheel, and that has become the industry standard. Where in automobiles, that is deemed to ugly, so the wheels are much thicker, with recessed lugs, so that when you put the wheel on, there is a space under the wheel for that nut, so it doesn't have to stick out. Since it is covered, there doesn't need to be an additional domed cap stuck on there.
I am interested in this because I bought 2 wheels/tires identical to those on my Jeep and it didn't even occure to me that they wouldn't fit on an axle of the proper bolt pattern.
Kids in my area had taken to leaving the center caps off their wheels and painting that nut a color that matched their brake drums, and what ever they could paint a contrasting color.
The cars/trucks I have taken apart, have the same castle nut that is displayed in that picture, but they don't have the domed cap on them. I have a feeling that it is because trailers have steel wheels with minimum thickness, that when you bolt them to the wheel mounting surface, the hub pokes through the wheel, and that has become the industry standard. Where in automobiles, that is deemed to ugly, so the wheels are much thicker, with recessed lugs, so that when you put the wheel on, there is a space under the wheel for that nut, so it doesn't have to stick out. Since it is covered, there doesn't need to be an additional domed cap stuck on there.
I am interested in this because I bought 2 wheels/tires identical to those on my Jeep and it didn't even occure to me that they wouldn't fit on an axle of the proper bolt pattern.