So I've been referred to Diamond Racing for the wide steel look for my BMW. My however after writing back and forth to him I've learned their wheels are lug centric and not hub centric. And he recommends not using rings to make up the difference. Because the wheels are machined for the lugs and not the center bore. So, they could be off center per say and interfere with the rings. Now, that brings up a safety concern with me... That bmw designed the car for the wheels to be resting securely around the hub for extra support.. Now all the weight and power will be resting solely on oem lugs... Thoughts anyone please.
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Use of Non hubcentric wheels ?'s
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Think about this for a minute. Must aftermarket wheels have a bigger centerbore then the centerbore of the vehicle they will be going on. I know places will like TireRack will supply plastic centering rings.
I don't think the plastic does much.
Also, I've been running my Wald's for 20,000 miles without centering rings and the car rides perfectly smooth and I've had 0 issues.
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Yep, people including myself freak out about being hubcentric so much now. But I remember when I started with my honda years ago I would just throw on anything in 4x100 that would fit. Never once did I have an issue with it. You should be fine, and I would definitely follow the manufacturers installation guide (no rings due to possible variance in the hubcentric opening).
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Ok, thanks for the input guys. I'm getting mixed reviews. The mye28 board is full of oem guys and say not to.. And the stance crowd says I'll be fine... My worry is safety for one then also wobble/vibrations at that 50/60 or over 80 mark.
Also, if I do go this route would it be best to change to the lug studs or would staying with stock lugs be just as fine?
I want 16s and no one around me widens them anymore; like they can't. But they'll do 15s. Diamond offers the 16s though. So it's a gamble with them or lower my standards to the 15s in oem bmw steelies... But then I have to buy 4 new tires instead of just 2.
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Originally posted by Streiffy View Postbmw designed the car for the wheels to be resting securely around the hub for extra support..
Hub-centric means the hub is used to accurately position the wheels. When the lugs are torqued down, friction between the back pad of the wheel and the hub mounting surface is what keeps the wheel from moving. There is no weight on the hub.
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Swap to studs you'll be golden. It will make the wheels lug centric v/s hub centric.
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Originally posted by AMGwheelwhore View PostSwap to studs you'll be golden. It will make the wheels lug centric v/s hub centric.
The threads in the hub aren't changing location, so I'm not seeing how a stud and nut is any more accurately located than a lug bolt. Both of them have the same conical seat positioned at the center line of the shaft.
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Thanks guys, I'm still torn.. My only two widen'er guys in town can't widen 16s? Their band supplier is outta business. And diamond doesn't offer the width I want in 16s. So going the 15 route I'm leaning towards stock steelies that are hub centric n I won't have to worry about the lug debacle. So I'm left waiting for a 16" widen'er guy to come along or just go the 15 route.
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Originally posted by KyleAnderson View PostCan you explain how?
The threads in the hub aren't changing location, so I'm not seeing how a stud and nut is any more accurately located than a lug bolt. Both of them have the same conical seat positioned at the center line of the shaft.
With studs its easier to put them on, 'cause the studs kinda center the wheel..,
you don't have to hold it with one hand and put the bolts in with the other...
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