Boss 338 / Coys C5 wheel question

[CC69Rat]

This may have been posted / answered before but I am curious before I make my wheel selection.

My truck is a 69, but it has had the 73-87 front swap. I have heard people mention the Coys and Boss wheels do not fit the 67-72 trucks exactly right (the center bore problem) Would I have the same problem running 73-87 front end? Do you know if the Eagle 225 has the same problem?

Also, what's a good backspacing to run on the front? My truck will have about 4.5" drop, (2.5" spindle, one turn cut out of the coils .. PO cut them)running 20x8 or maybe 20x8.5 if I can get away with it. What are you guys running on the front? 5.5" bs? 5" ? what works best? Tire size? Pics? Thanks.

[screaminchevypickup]

on the front of my truck im running 20x8 coys with a 5.25 back space and on if they will fit it just depends on if you have light duty or heavy duty rotors most light duty rotors you will have no problem with but you can run a spacer behind the cap

[screaminchevypickup]

also the front of my truck is lowered 5.5 with no rubbing problems at all

[250powerglide]

im all over this thread ! in one month im ordering the c-5 wheels and im intrested to know what others have experienced with them . im so hard up for pics of yalls coys wheels id almost pay to see them !

[tantrumpipeline]

running 20x8.5 338's, cheap wheels to buy and the machining on the rotors cost me $40, pretty minor and could have been ground at home with a common grinder and patience, lots of pics in my build thread probably the last page or 2 just got the front rolling but here are 3 to give you the idea, this was not all machined to fit just to match the factory taper on the rotor, all you need is the top 1/4inch or so needs to be ground for them to fit. The general consensus is the coys are far better quality but the customer service is awful, to me you get what you pay for, my 338's look really good but the caps don't fit too easy I wrecked 2 being rammy, I'm cheap so the 338 was my only option. Truck is just a chassis but I'm running 2.5 western drop spindles and 3 in cpp drop springs out front 7 in drop rear and plan on a 2.5in spacer out back

[Manxxman]

I'm running 338's. 20 x 8.5 fronts, and 20 x 10 rears. They fit fine.
Boss fixed the clearance problem. I just put these on this last weekend.
No clearance issues at all and they look awsome!!!

[83c10wit454]

Originally Posted by Manxxman

I'm running 338's. 20 x 8.5 fronts, and 20 x 10 rears. They fit fine.
Boss fixed the clearance problem. I just put these on this last weekend.
No clearance issues at all and they look awsome!!!

Ok did I miss something? Are these wheels a direct bolt on now?
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[lolife99]

Originally Posted by 83c10wit454

Ok did I miss something? Are these wheels a direct bolt on now?
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Not that I know of.
The 67-87 trucks still require grinding on the Hd 1-1/4" rotors.
The 1" LD rotors have always been a bolt on.

[Andy4639]

Originally Posted by Manxxman

I'm running 338's. 20 x 8.5 fronts, and 20 x 10 rears. They fit fine.
Boss fixed the clearance problem. I just put these on this last weekend.
No clearance issues at all and they look awsome!!!

I say yes they are a direct bolt on.
Guys we are basically putting custome wheels on thee trucks so a little grinding isn't such a big deal.

The bolt pattern is a direct bolt on. I had the minor problem of rubbing on the rear before using the 3/8 shim but it's my fault for picking the tire I did. It's not the wheels fault.

[VWBeamer]

what backspacing/offset are your Boss wheels Manxxman??

BTW, nice ride! Is it bagged? or just one hell of a static drop?

[Manxxman]

Originally Posted by VWBeamer

what backspacing/offset are your Boss wheels Manxxman??

BTW, nice ride! Is it bagged? or just one hell of a static drop?

Boss only offers 1 backspace for the 8.5 wide rims. I beleive it's 5.75" and the 10's have a 6.25 i think.

Yes it's bagged, but it is going lower by the time i am done with it.

Thanks for the nice comments.

[screaminchevypickup]

heres my coys the truck is 5.5 front 8 back front wheels are 5.25 bs and the rears are 5 bs the look and work great i thought the customer service was great ordered the wheels on a monday had them by thursday even know im not keeping these wheels on this truck i would highly suggest them to anyone

[Bennett68C10]

Originally Posted by screaminchevypickup

heres my coys the truck is 5.5 front 8 back front wheels are 5.25 bs and the rears are 5 bs the look and work great i thought the customer service was great ordered the wheels on a monday had them by thursday even know im not keeping these wheels on this truck i would highly suggest them to anyone

Wow those look really good, that is one beautiful truck you have screaminchevypickup. I have the flat black C-5 in 18x8 with 4" bs front and 20x10 with 5.5" bs rear. Tires are Yokohama 245/45/18 & 295/40/20. Check out my build thread for pics.
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[STP67-72]

Hey screaminchevy
On the black chevy with coys. What size tires are you running and is it the stock 71-72 rearend???
Thanks

[tdp67]

Originally Posted by screaminchevypickup

heres my coys the truck is 5.5 front 8 back front wheels are 5.25 bs and the rears are 5 bs the look and work great i thought the customer service was great ordered the wheels on a monday had them by thursday even know im not keeping these wheels on this truck i would highly suggest them to anyone

Those look good. Why wouldn't you keep them? What size are they? They might look good on mine. Do they come in chrome?

[big_al_71]

255.50.18 up front and 295.45.20 in the rear...
zero issues with my coys and I also bought the wheel aluminum spacers for the front after I had already grind the hubs just to be safe..

[ndowens]

Originally Posted by screaminchevypickup

heres my coys the truck is 5.5 front 8 back front wheels are 5.25 bs and the rears are 5 bs the look and work great i thought the customer service was great ordered the wheels on a monday had them by thursday even know im not keeping these wheels on this truck i would highly suggest them to anyone

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[fast&low]

Andy4639
Was wondering if you could tell me what bs do you have on your rear wheels (20x10) they have 2 different bs now so I'm trying to figure out what to go with?
It looks like your rears stick in more than the front & as it is I have the narrow 69 differential whill you have the wider 70 1/2-72.
I'm tubbed so I'm not worried about the fitment part of the bs I'm just trying to get the wheel track as close as I can.
My truck is a 69 fleetside with a disc/drum 4/7 drop
Thank you

[screaminchevypickup]

The only thing that I don't like about the boss wheels is the offsets the front stick out more than the rears and the back sits way to far in without running a spacer
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[bigblock68]

my blazer is running 20x8 and 20x10 c5's.tires are 235-35 and 275-35...bolt right on and have no clearance issues

[screaminchevypickup]

Originally Posted by bigblock68

my blazer is running 20x8 and 20x10 c5's.tires are 235-35 and 275-35...bolt right on and have no clearance issues

Nice I cant wait to have mine done
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[BossHogg69]

Originally Posted by bigblock68

my blazer is running 20x8 and 20x10 c5's.tires are 235-35 and 275-35...bolt right on and have no clearance issues

Looks awesome - love the stance and color!

[STP67-72]

Here is my 72 truck sold a while back with 20x8.5s and 20x10s. 255-45s and 275-45s. About a 4/6 drop. 2.5 spindles with one coil cut. and 5 rear coils and 1-1.5 blocks??? Front tires were to tall, rubbed on dips in road etc.
Boss wheels are worth the time since they are cheap. I want coys still. I didnt like the rear boss wheels because there wasnt much of lip due to the 6.25 B/S. I had a 1 inch adapter to make it work. Less than a 100.00 bucks. EZ adapters. I think?? I had less than $1400.00 in everything. Worked for me because i was selling truck. But i am going to order Coys this week, unless i cant afford my first choice.


I also want a 295-40-20s. Hope they fit with no mods to bed. It seems to work for some people.

[Zoomin]

These are Coys C-5's 18X8 with 4 bs 255/45-18, 18X9 with 5.5bs 295/45-18
The truck is dropped 3.5/5.

The second pic shows the spacer. You can buy them from a forum member (pm me - he's not a board vendor) mde of aluminum, or Coys will send you some plastic ones.

[STP67-72]

Anybody else running 295-20s.