Hitman's Pontiac Trans Am Forum
Trans Am Information => Aftermarket Questions => Topic started by: Angelo on July 03, 2013, 03:14:43 PM
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Does someone have a picture of the back side of the YearOne 17" Snowflake cast aluminum wheels?
Reason: I got Moser axle shafts with my rear disc brake car, not thinking about the hub being used to center the wheel as well as the rotor. I have about 1/8" of the hub sticking out, so if the YearOne wheels are machined with the hub hole flush with the bolt pattern, then I'm in business. The factory snowflake wheels hub hole is recessed about 1/8", it's barely touching the hub hat from my Moser axles.
For the time being I'm using this method noted in reply #26: http://transamcountry.com/community/index.php?topic=50695.msg460353#msg460353
Also, do the YearOne 17" accept both types of lug nuts? If it accepts the conical seat style lug nuts, then I don't need to worry about this.
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Did you get this sorted? I have a 17" snowflake sitting in my bedroom and also several photos of the inside of the rims when new, don't look much different to stock 15". Just measured....the centre of the hub hole inside the centre cab has a 45-degree 1/4" chamfer.
And no, they take the stock snowflake lugnuts not tapered acorn style, not suitable for alloy rims without the hardened inserts. Is the problem basically that the replacement rear disc 'hub' is thicker than that of the original brake drum so not enough to hang the rim on to centre? Any questions, photos or measurements, let me know...rim is right here ------->
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Someone over on TAC told me I can use tapered (acorn) nuts with the aftermarket wheels. If the wheel is not designed for that then that's a problem.
What is the hub diameter of the 17" wheels? Is it the same 70.3mm?
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Eyeballing it to a small ruler it looks about 71.2mm. The stud holes have a tiny chamfer on them to take the corner off, not designed to take an acorn nut beyond finger tight.
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I think they sell hub centric rings that would go from 70.3 to 71.3. I don't think they make them any thinner than that though.
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And grand73am corrected the first reply on TAC the wheels cannot accept the tapered lug nuts. So now I need a hub centric ring solution. I think a hub centric ring that is wedge shaped would be the solution here.
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Some older photos I took of my new 17's:
(http://i72.photobucket.com/albums/i195/Aus78Formula/Wheels17Snowflake21_2011_zps14326bb8.jpg) (http://s72.photobucket.com/user/Aus78Formula/media/Wheels17Snowflake21_2011_zps14326bb8.jpg.html)
(http://i72.photobucket.com/albums/i195/Aus78Formula/Wheels17Snowflake31_2011_zps721ccbad.jpg) (http://s72.photobucket.com/user/Aus78Formula/media/Wheels17Snowflake31_2011_zps721ccbad.jpg.html)
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Man I want those wheels! That 45 degree edge sucks for my situation. Maybe I can make a mold with that InstaMorph plastic stuff.
How tight do the factory snowflake lug nuts fit in the aftermarket lug nut holes?
I owe you a very tall beer!
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From memory they were a size for size fit and snug right down inside the recess, could also be the repro lugnuts I have but as good as centering the thing with these alone, so firm a fit that you wouldn't be able to do them finger tight all the way but just started and then spin the bar for the rest of the way in. There wouldn't be an issue having the rim centred, but perhaps moreso that it is only supported by the studs and not the hub.
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The hub doesn't support the wheels anyway once the bolts are torqued down to spec, so that may be OK then. The lug nuts now fit snugly in my factory wheels and is why I didn't worry about this originally. I think I will stick with the plan get these wheels, if I need to I'll make some rings with a wedge shape to match what year one machined off.
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I have a 17" snowflake sitting in my bedroom
now that's a true T/A lover
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Haha, working on my white tyre lettering during dvds in the early hours from my other post.
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So not only are the rims in your bedroom, but so are the tires/tyres? :)
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You mention that as if it's not normal?!
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LOL
I think most of us have some sort of rubber next to out beds. :)
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My 17" wheels arrived today. I will take some pictures over the weekend but there appears to be a couple changes compared to the first version they released...
- 5.125" backspacing (first series had a 4.875" backspacing) If you need less backspacing, add a 1/16" or 1/8" or 1/4" spacer.
- Lug nut holes are NOT like factory snowflake wheels. They have a conical seat ground into them, more than likely so they work with both acorn conical lug nuts as well as the traditional snowflake lug nuts.
The lug nut holes are recessed pretty deep, I'll do some measurements compared to my 15x7 snowflakes. It doesn't take away from the look of the wheel, just observing a lot of extra aluminum in the casting at the lug nut holes.
If the traditional snowflake lug nuts do not center the wheel I'll switch to acorn style lug nuts. Either way, I'm in business!
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Any idea why they changed the backspacing?
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I just blogged bout the wheels. I'm pretty pleased with them. http://www.modsandrods.tv/2014/06/13/yearone-cast-snowflake-17x9-wheels/ (http://www.modsandrods.tv/2014/06/13/yearone-cast-snowflake-17x9-wheels/) Only thing I don't like is how recessed the lug nuts are,both acorn and traditional snowflake lug nuts look funny that deep to me. I ordered some longer lug nuts, going to give them a try to see if they look a little better sticking out.
I have no idea why they changed the back spacing. I think they should have done 5" exactly on the nose in my opinion. I believe factory 15x8 had a 4 1/2" back spacing, so mathematically you would think you would add 1/2" to each side and arrive to a 5" back spacing to keep it centered. The 15x7 also have a 4 1/2" back spacing so if you went by that wheel you would end up with a 5 1/2" back spacing with the same logic, so maybe this is a compromise. Looking at clearances in the rear, I am now concerned about tire rubbing and may need to put a 1/8" or 1/4" spacer in there. Will be a week or two before I will find out. I do have rear disc brakes so maybe the thickness of the rotor will make up enough of the distance in my case.
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I have no idea why they changed the back spacing.
I guess to run a wider tire? most go with a 285 on back
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If the back spacing was any higher it would def rub on the inside near the seat belt mounts.