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Currently have those great looking LT-III on my car
But they don´t allow this size on vintage cars here in Germany,
so I have to go down to 15"
I decided to go with Torq Thrust D, but on the rear they are only available in 10x15, requiering me a spacer 1/2" or 3/4" to
get the same position of the tyre in the wheel well (There´s still some space, thats why 3/4" is an option)
I don´t like this sort of spacers with the bolts in them,
and I doubt the studs of the axle would fit under the TTs when the spacer is only 1/2" thick.
Or has anyone experience here?
So I have to insert longer studs into Tom´s rear axles and go with a spacer with only holes in it.
Which studs would you recomend, and makes a hub centric spacer sense? I don´t know if the TTs are hub centric. But I have a lathe and could also make my own center pieces. (Can not make my own spacers, the lathe is too small)
When I read your post, I googled pictures of torque thrust wheels and found a view of the back side - I think you are right, the original studs will probably hit the rear face of the wheel (Unlike my aluminum Cragars, they actually have recessed areas where the studs would be).
I have run stud-centric wheels for years with no issues (vs hub-centric). You could go with a deeper adapter, and adjust you wheel backspace to accommodate.
Alternatively, for street driving, I also would not be afraid to just use a 1/2 inch spacer. I did this with my older 15" Cragar SS wheels for several years. If you do, make sure your lug nuts have enough shank to reach down into the hole on the new wheels and maximize the thread engagement - I think I ran jugs with at least a 1/2 or 3/4 inch shank. You would want to measure the depth make sure you get the right lug nut.
Others may disagree with this, but its been done for decades with no ill effects that I am aware of.
Summit racing sells ARP wheel studs. All vintage racing corvettes àre required to have longer and stronger studs. C3 are 7/16th by 20 thread size. You can use that size or even jump up to 1/2 by 20
some thing like these. Call and ask for the length you need
https://www.summitracing.com/parts/arp-100-7701
Thank you!
When I would jump to the bigger size, what about the holes in the rims?
They would need to be drilled? And would never fit on standard bolts anymore.
So I would prefer to stay with standard size. Despite you would say it´s a safety risk.
Thank you!
When I would jump to the bigger size, what about the holes in the rims?
They would need to be drilled? And would never fit on standard bolts anymore.
So I would prefer to stay with standard size. Despite you would say it´s a safety risk.
The ARP 7/16th are terrifically strong. I would ask the wheel manufacturer what the stud size is. My Centerline wheels were made for 1/2 inch.
I was wondering why in germany would they want you to use nearly out dated 15 inch tire technology?
I was wondering why in germany would they want you to use nearly out dated 15 inch tire technology?
Because the law says you have to keep an old car in original condition to get the tax advantage. Of course you can give your vintage status away and put all new stuff onto the car, but then you pay $3000 tax per year for a big block car.
Yes it´s crazy that we have to use those unsafe tires.
You can´t imagine what problems we have to get american aftermarket wheels legalized. They accept only european wheel testing standards.
In the past it was better, but since some years it´s getting worse and worse.
I have a set of these available (professionally modified to fit a Corvette caliper and marked American Racing Torque Thrust 15x10 on the back side), as a set of 4 only. send a PM if you or anyone else is interested
Last edited by redvetracr; Jun 14, 2018 at 07:05 AM.
Thanks for the pic, are this the D types?
I´ll need 8,5x15 front and 10x15 rear. (because 11x15 is not available)
Found a shop that machines the TTs to any backspace, then I could stay with original studs. But then I have to pay much more for the rims.
I believe they are the D type. I checked the Corvette Central website but I can't find the wheels. Don't know if they have discontinued them or if I just couldn't find them. Real paper catalogues are so much better!
The caliper clearance is a good point.
Noone talked about it, I thought it would just fit.
I have the wilwood calipers, but think it makes no difference.
On the rear it won´t be an issue with the spacer, but in front?
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Spacer and Studs for Torq Thrust
