You are wrong on this one. Don't own any BBS RS, but I own more than 10 sets of 3 piece wheels at any given time, and measurents are standard. Sounds to me like you are going off physical measurements rather than manufactured. Ex. An 18" rim is in fact 19.5" inches in diameter from lip to lip, but I digress. Best.
The whole 10" thing for an 8" wheel is confusing things a little, just like the 19.5" for an 18" wheel. I understand those concepts, but I'm just confused about how you measured the lip and barrel. There also isn't any mention of what the BBS model is. This is typically printed along with the size and offset between the lug bolt holes.
You are right. It doesn't really matter for your sale (unless the buyer is looking to modify the wheels).
BBS Lips and barrels are measured from where the contact the center price, which is 1/2" thick, at least on these. Since you have a "reverse" lip, you can't see where the lip contacts the center piece, making it near impossible to get an accurate measurement. On these wheels, you should be able to easily measure:
- bead-to-bead (wheel width)
- barrel bead back of center (= barrel width)
- lip bead to back of center ( and subtract 1/2" for lip size).
It most likely doesn't matter to you, and that's totally understandable. I am just trying to understand these center pieces and how they compare dimensionally to bbs 16" faces. (I have a 1" lip and a 6.5" barrel on an 8x16 et35 bbs wheel in my garage which is made with a Bbs RS flat face rs008/rs009/rs011/rs023 etc. You can also make a 8x16 et35 BBS RS with the curved face rs077/rs098 with a 1.5" lip and a 6" barrel.)
Anyway, if you ever happen to confirm how you measured the barrel, that would be great. Thank you for helping me out.
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