Gold Lifetime Member
Join Date: Nov 2010
Location: Keswick, Ontario, Canada
Re: Hub Centric Rings?
1 mm is basically 40 thousands of an inch. Kevin is right, when mounted that thranslates to 20 thousands of an inch on each side.
Also it is important to keep in mind heating and cooling. Hubs often get hot and will want to expnad some...probably not 20 thousands of an inch but some expansion room is needed.
When you look very close at the hub, it tapers out slight where it meets the base of the drum and the disc. That tapers adds at least 1 mm.
Lastly, the ones that I saw had no other option than 71.5 mm. in combination with a 82 outside.
I ordered my new wheels along with these rings and locking nuts. When I get them and have a chance to install, I will post let you know how they and work.
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383 SB, AFR 195 Heads, 670 Holley, Doug Thorley Tri-Y Headers, Lunati "Voodo" roller cam, Weiand 8150 Intake, Scorpion Edurance Rockers, 700r4, Eaton Posi with 3.73 gears, Front Discs, Summit Legend 5 - 15" with BF Goodrich TAs