Corvette wheels

Tire sizing and wheel offset.

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Corvette wheels

Postby mattr408 » Mon Jul 25, 2011 12:55 pm

I've been wanting some new wheels for a while, and came across these on craigslist http://lexington.craigslist.org/pts/2465280217.html
What do you guys think? Will that size of wheel stick out in the back (have a stock rear end) and are they going to hit the frame in the front?
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Re: Corvette wheels

Postby AWD V8 » Mon Jul 25, 2011 1:01 pm

The price isn't too bad.

If you have a 4wd the wheels will fit fine. If you have a 2wd the wheels will stick out about 2-1/2 further than the stock wheels"

Most 2wd guys run 2-1/2" spacers I believe.
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Re: Corvette wheels

Postby mattr408 » Mon Jul 25, 2011 1:02 pm

What are these spaces of which you speak? :D

And, it's a 2 wheel drive.
I could go with the back wheels sticking out a little bit (although I'd rather have them tucked in) until I get a different rear end. But I would HATE it if the front wheels stuck out. Trashy look to me.
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Re: Corvette wheels

Postby 88LT1Blazer » Mon Jul 25, 2011 1:53 pm

http://cgi.ebay.com/ebaymotors/5x120-65 ... 2560a00079

Just check their store for other sizes.
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Re: Corvette wheels

Postby Nivek » Mon Jul 25, 2011 4:36 pm

What am I missing, I thought a spacer would make them stick out further ????
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Re: Corvette wheels

Postby superspirit » Mon Jul 25, 2011 4:54 pm

It would kevin, because of the difference in track width the wheels might fit the 4x4 and possibly stick out but on the 2 whl dr you would need spacers to keep them from hitting the springs and suspension components.
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Re: Corvette wheels

Postby 88LT1Blazer » Mon Jul 25, 2011 5:07 pm

Close no cookie 8)
On the 2wd trucks, when you use vette wheels, you have to use spacers. The backspacing is too great and the wheel is too far in. The spacers push the wheel out where it needs to be. For an example. Say a 17x10.5 vette wheel, it has 56mm offset. When you do the math, 25.4/ 56 = 2.2" Then the center of the wheel would be 2 / 10.5 = 5.25". With the two combined, 5.5 + 2.2 = 7.7" of backspacing. When a normal wheel will fit being 5" of backspacing, the extra 2" or so will not even allow the wheel to mount. Thus, the need for spacers to offset the wheel.
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Re: Corvette wheels

Postby Nivek » Mon Jul 25, 2011 5:08 pm

Ok that makes sense to me, thanks for clearing that up. In my simple mind I was trying to figure out what kind of spacer would make them stick out less. :lol:
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Re: Corvette wheels

Postby AWD V8 » Mon Jul 25, 2011 5:27 pm

Yes, to put it simply, like I need it, the Corvette, and our 4wd trucks, have the hubs sticking out further so the center of the wheel, that bolts to the hub, is off-set further out to keep the tire farther under the fender and not stick out. Installing these deep off-set rims on your truck will move the tire way too far inside the fender and rub on things. So putting a spacer on the hub mounts the center of the wheel out further and moves the tire out as well.

Their, now you have two ways of looking at it.

Typically 'vette wheels are very light, magnesium. My stock 4wd wheels weighed 60 lbs, the tires mounted on 'vette wheels weigh 40 lbs. Handling and acceleration is better.
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Re: Corvette wheels

Postby 88LT1Blazer » Mon Jul 25, 2011 5:37 pm

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Re: Corvette wheels

Postby AWD V8 » Mon Jul 25, 2011 6:42 pm

88LT1Blazer wrote:By the way, I am selling mine!!
http://neworleans.craigslist.org/pts/2506869647.html


Oh I like those :thumbup:
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Re: Corvette wheels

Postby mattr408 » Mon Jul 25, 2011 6:47 pm

Alright, that makes a whole lot more sense to me now.
Now, like I said earlier. especially after having been spaced, are the wheels/tires going to be sticking out from the side of the truck??
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Re: Corvette wheels

Postby 88LT1Blazer » Mon Jul 25, 2011 7:57 pm

With the proper spacer and tire combination, no...

Thanks AWD :thumbup:
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Re: Corvette wheels

Postby mattr408 » Tue Jul 26, 2011 6:44 am

I guess I'm still confused as to what size spacer, and how a spacer would keep them from sticking out.
As far as tire.. What about just the stock tire (whatever the vette had on it from the factory)
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Re: Corvette wheels

Postby 88LT1Blazer » Tue Jul 26, 2011 8:33 am

ZR1Blazer had the older ZR1 wheels on both the first gen and a second gen. The tires were 275/40/17 front and 315/35/17 rears. The rims were 17x9.5 front and 17x 10.5 rear. This set of wheel and tires fit the blazers fine.
The first gen used 2" spacers on all 4 corners.
The second gen used 2" spacers on the front and 2.5" spacer on the rear.

The second gen has more fender than the first gen does. This allowed for the rear wheel to more out the additional 1/2". None of the tires stuck out. They were flush with the fenderwell. The turning radius is reduced on both applications due to the wider wheel and tire on the front. The only time you would notice that is to turn around or to come into a driveway.

I personally was gonna use the Z06 wheels with 255/45/17 front, and the 285/40/18s rear. I had swapped my rear end from 2wd to 4wd to skip the spacers on the rear. The fronts were gonna be measured before ordering my spacers. I was upgrading to the LS front brake mod. This pushes the front wheel out about 3/8-1/2" more than stock.

For your own understanding and to check what size spacer you NEED, do the following. Jack up the truck under the LCA. Then remove your current wheel and lower the truck to the height of the wheel center. Place the new vette wheel in the area to line it up with the fender. Then measure the distance between the wheel mounting point with the hub of the truck. This will give you the size that you need for the spacer. Things you have to take into account, are sway bar links, LCA, and fender. The only way to test these is to turn the wheel and set the same distance between the hub and the wheel. This will give you an idea how the wheel will fit. The front is the most important, due to the turning aspect.
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Re: Corvette wheels

Postby 97_lt1_sleeper » Tue Jul 26, 2011 9:45 am

I'll chime in just in case it might accidentally help you, mattr408. I have a second gen truck with the same wheels as what 88LT1blazer is selling, but in gunmetal gray finish.

On the front, I have the LS1 brakes which are 0.15" of spacer, and a 2.35" thick bolt on adapter, which amounts to 2.5" of spacer. I can turn from full lock to full lock, and the tires don't rub anything, and they sit flush with the edge of the fender (again on a second gen). The front tires are a 275/40 R17.

On the rear, I used a stock width ford explorer 8.8" axle, which is 2.75" wider per side than the stock 2wd axle. This is the same width as a 2.75" spacer on a stock 2wd truck. I have no rubbing issues, with a tire size of 285/35 R18, and there is enough room that I could easily go to a 305 series tire if I chose to.

Hope this helps. You can check my build thread for pictures.
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Re: Corvette wheels

Postby 88LT1Blazer » Tue Jul 26, 2011 9:56 am

With your front spacers, did you order the 2.5s and have them milled down?
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Re: Corvette wheels

Postby mattr408 » Tue Jul 26, 2011 12:41 pm

Lt1 sleeper, you say that your 8.8 is the stock width, not narrowed or anything?
This is ALL great news to me 8) :D
Thanks for all the great info guys. Much easier hearing from you all, rather than trial and error
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Re: Corvette wheels

Postby 97_lt1_sleeper » Wed Jul 27, 2011 6:15 am

mattr408 wrote:Lt1 sleeper, you say that your 8.8 is the stock width, not narrowed or anything?


Correct, it is the stock length, no narrowing of any kind. I did cut the spring perches and sway bar mounts off so I could set my pinion angle and have the perches the exact right distance apart, but I did not narrow the housing or shafts any.

The spacers were ordered at 2.35" from Fred Goeske at http://www.wheeladapter.com . From looking at the adapters themselves, there is not much room to mill anything off either the front or rear face and have them still work. If you took much off the back side, the lug nuts might hit the brake rotor before torquing up. If you took any off the front face, you would lose strength where the new studs press in, which I didn't want. Fred had them made custom and out the door in less than a day, so it wasn't like it took a long time to just get what I wanted in the first place.
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Re: Corvette wheels

Postby 88LT1Blazer » Wed Jul 27, 2011 8:22 am

Great info, thanks!! I may need a special size to work mine. I plan to sell the chromed Z06 wheels and get the aftermarket polished aluminum ones. The new wheels will be all 18 x 9.5. I am thinking of 275/40/18s all the way around. The 4x4 rear end make the rear a simple bolt on. The fronts will require spacers. I just need to measure once I get to that point. I prefer the look of the polished aluminum, vs the chrome. The blazer will be the same silver, and trying to blend more than a sore thumb. :thumbup:
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