This is the brake/ hub assembly with the wheel removed. I've highlighted the hub red to make it more obvious. The stock wheel is usually hub centric, which means the center of the wheel fits snugly exactly to the diameter of the hub.
Many aftermarket wheels will have larger diameter hub openings. If you have matched the bolt pattern, you could just bolt the wheel in place, but you would be relying on the lugs to center the wheel (a lug centric set-up). To make your aftermarket wheel hub centric, you can get adapter rings to increase the size of the hub. This is the assembly with the adapter in place. The red dot shows where the stock wheel would rest, and the blue dot shows where the aftermarket wheel rests. The plastic ring converts the wheel/hub to the more desireable hub centric set-up.
The only difference between this car (a Miata) and our truck is that the trucks have a larger ring around on the hub versus the wheel setting straight on the hub it's self. I know of no modern car manufacturer that uses lugcrntric wheels, this would cause to many problems of vibrations straight off the showroom floor. After all car manufacturers want less problems, not more problems.
A quick test of this is for those with aftermarket wheels is to put one your original wheels back on and see if the wheel rests on the hub ring without touching the lugs. Then put your aftermarket wheel back on and see if it does the same. If the aftermarket wheel does not rest on the hub ring then that wheel is lugcentric and your chances for vibration problems just went way up.
i've been reading on this subject ever since i put aftermarkets on and around 50 i get a little vibration, but finding these rings or the size i need has been a little frustrating. Are they something i get from the wheel manufacturer or as long as you know the correct size, can you get them off like Ebay? Also, how is the size determined? I have some 16x9 moto metals, if anyone has already went through this with them.
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2006 TRD Sport 4x4 ~ Silver~265/75-16 Maxxis Bighorns,Bilstein 5100's,16x9 Moto Metals,BlackHeadlight & Emblems,tint,Parking & Blinker mod
Deezz22:
When I measured my hub ring/wheel center, I measured 106 mm, but from what I see on the web and what a local wheel store said, all modern Toyota trucks use a 108 mm hub.
When I asked the wheel store what they do about a lugcentric wheel for a Toyota truck, they said that it could be used as long as the aftermarket wheel center was greater that 108 mm and they did have the hubcentric rings to use with the lugcentric wheels to center it again on the hub. Since this is the first time that I had ever seen the Toyota hubcentric ring (I know all about the Miata's rings since I do own two Miatas). I'm not sure where you can buy these rings for our trucks other that a specailized wheel store, but I am guessing that with the web, you could "google" for Toyota hubcentric rings and some one will have them.
Again I say, you have to center the wheel on the balancing machine to balance the wheel and tire. After all the balancing machine has to take ALL wheels from ALL manufactures. Once you balance the wheel and tire, you put it back on the truck and it rests on the hug ring (go check it yourself).
Sethmark:
It makes a BIG difference. This is why people complain about wheel vibrations when they have aftermarket wheels. By the way, here are some hubcentric rings that will work on out Taco's: http://www.prestigewheel.com/cgi-bin...&key=HR108-106
Last edited by Panama Red; 06-29-2007 at 07:01 AM.
People complain because installers are too lazy to use the proper adapter to account for the LUG CENTRIC nature of the pattern. They stick a cone in the hub as use it to balance the tire, instead of the proper LUG centered adapter.
I haven't dealt with Prestige Wheels yet. My take on them is they prefer to sell to shops as they charge an extra $10 for orders uner $50. Then when I put them in the basket, instead of charging me extra, they just told me to spend more. Probably need to call. I'll bet 4 Wheel Parts or Discount Tire can get these rings.
Sethmark:
If our trucks were not hubcentric, then the aftermarket would not be selling hubcentric rings for it. After all, I do not know of any business that makes stuff that nobody will buy if it was not needed.
And yes, I just read the TSB, but it is again about the wheel balance machine, not the wheel on the truck.
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