Quote:
Originally Posted by Smartbillet
I doubt that their is sufficient material thickness to support threading.
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Negative, there's plenty.. (Trust me, we're making them like literally right now..) On my particular application the rears end up being 22.4mm thick, and the front are 25.6mm. (For my 'Merican Brothers, 25.4mm is an inch). 20-something-mm is plenty for cutting threads into. Hell, the Sperverbreitung (or whatever the heck those German ones are) set I saw were 15mm. Consider that the original threaded hubs are much thinner (although steel..) and that we're now distributing the wheel load across five lugs, one of which passes straight through the adapter and threads into the steel hub. It's all good. Get and use a torque wrench and you're peachy.
My adapters are odd thicknesses just because I'm using staggered wheels with funky offsets and trying to keep the lips as close to tucked as possible. After measuring a bunch of likely 16 and 17" wheels (and assuming that most people will use the same rim and tire combo on all four corners) it's looking like the production adapters will be right about 25mm front and rear. That's giving up about an inch of clearance between the inner rim edge and the strut, but should take most 7"-ish rims (with outside tire diameters close to the stock tires.. No Super Swampers kids..) without rubbing or poking out so far the car looks like a Lunar Rover. The biggest problem is that rims in this size have offsets ranging anywhere from low 30-something-mm's to mid 40-something-mm's. That's almost a half inch of difference, which can be significant when you're talking about suspension clearance.. It's a real PITA to design when you have a complete wild-card number to have to deal with.
Cheers,
Johnny