So I have been wanting to purchase a set of Asanti AF135 3-piece wheels. For the rear wheel being a 20x10 with an offset of 38 or 40, I am told that it will only have a 3" lip and that there is no difference in the amount of lip between an offset of 38mm or 40mm. Also, the sales person told me that I must go down to a approx. 25mm in order to gain another 1/2 inch in lip because the amount of lip a wheel has goes in increments of 1/2 inch. Does this sound right? Are most wheels like this or is it just Asanti? It just doesn't make sense to me. I figured for each mm +/- equals that in lip but apparently this is not true. Can anyone shed some light on this?

i'm no wheel expert, but, also might want to ask which disc type it will be made for. iirc, there's stock, high, and low discs.

i'm sure the wheel experts will chime in, in due time

The lip varies according to the location of the face of the wheels (aka the offset). 0 being in the middle of the barrel. As the numbers become positive (ie 38 or 40) the face is moving closer to the outside edge of the barrel. As the offsets become negative the location of the face is getting closer to the inside edge of the barrel. Hope this helps.

** I am no wheel expert, but this is my understanding of how it works.

12mm lower offset does equate to about a half inch, he's not really lying to you, but yeah - ask about the disk size, that will affect it further.

Design (concave/convex/flat face), width, offset, disk type all play a part in the lip size.

If the Disk Types are the same, it only makes sense as Ride low stated that to gain 1/2" of lip you would have to go down approx 12mm in offset. Approximately 25mm = 1". So 38 - 12 = about a 26mm offset. Give or take a few mm. Do they have a spec sheet of the wheel? It'll show the different widths and offsets and what size lips that equates to.

Thanks for the replies. I understand how offset moves the wheel face in or out...but he is telling me that a 35mm offset will have the exact same 3" of wheel lip as a 38 or 40mm offset. This is where I am lost. Why wouldn't the 38mm offset wheel have 2mm more in wheel lip compared to the 40mm offset wheel? I hope this guy just doesn't know what he is talking about. From what I gather, he is telling me that those particular wheels only go in increments of 1/2 inch for the lip.

As far as I know most 3 piece wheels only come in certain offsets due to its 3 piece construction.

Take for example a 2 piece wheel. It only made from a solid barrel and the spokes you can place them however far in or out you want right down to the mm and then they are welded together. So in this case a +38 would have 2mm more lip than +40 because the face moves in 2mm more.

However a 3 piece wheel you have the inner barrel, outer barrel (lip) and the spokes. These are usually if not always bolted together and not welded wherever you like unlike the 2piece. The barrels are always pre-made in increments of 12.7mm (1/2 inch) because wheel widths are always #.0" or #.5" they wont make one lip 2mm or 10mm wider to achieve offset. From here its all depending on the disc pad on the back side of the spokes. If its a Low-Disc the offset will be higher and if its a Hi-Disc the offset will be lower. And usually the Hi, Med & Low discs are usually in increments of 5mm if they are pre-made. Although some companies (rarely) will shave the disc pad to whatever and then drill the bolt holes later for custom orders.



I hope that answered all your questions.


PS: Go lower on your offset. maybe +15. You'll have a nice lip, super flush fitment. You'll just need a bit of tire strech and roll your fenders but you'll love it in the long run

Thanks for the explanation. Now I fully understand why a 38 mm is the same as a 40 mm regarding lip. Maybe I will start looking at two piece wheels. I don't want to go super low on offset because I want nothing less than a 275-30-20 rear tire.