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Old 07-26-2011, 09:05 PM   #1001
bguild
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

anybody running 305/35/20 tires in the rear? I just bought a used set of Pirelli and I am going to try it. Granted i have my fenderwells and bed floor out so I am not worried about rubbing there. I am worried a little stretching that wide of a tire on a 10in rim. We will see. I hope they work because it should look pretty cool.

Now i just need to buy some rims.
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Old 07-26-2011, 09:16 PM   #1002
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

Quote:
Originally Posted by bguild View Post
anybody running 305/35/20 tires in the rear? I just bought a used set of Pirelli and I am going to try it. Granted i have my fenderwells and bed floor out so I am not worried about rubbing there. I am worried a little stretching that wide of a tire on a 10in rim. We will see. I hope they work because it should look pretty cool.

Now i just need to buy some rims.
I have 315/35/20 on my rear... Its a 72, I mini tubed the back 1 3/4inchs.

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Old 07-26-2011, 09:21 PM   #1003
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

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Originally Posted by Strut View Post
I have 315/35/20 on my rear... Its a 72, I mini tubed the back 1 3/4inchs.

whats the width of your wheel? Looks great
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Old 07-26-2011, 09:23 PM   #1004
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

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Originally Posted by bguild View Post
whats the width of your wheel? Looks great
They are 20X10 on the rear and 20X8.5 on the front. Thanks!
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Old 07-26-2011, 09:36 PM   #1005
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

I have 305/35/20 on 10 inch coys they work fine
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Old 07-27-2011, 01:35 PM   #1006
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

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Originally Posted by lolife99 View Post
I have already talked to him,... and he's waiting for a good part number to order two more 20x8.5's. I will be returning my old ones. Also,... for the 67-72 guys,... the rear 20x10's will require a spacer. I believe the 6.25" BS will be too much.
I'm going to try to fit these on my '69 (with the narrow '69 rearend and 5-lug conversion axles) I will probably run a 1" or 1-1/4" spacer.
(After I do some measuring)
I am going to run Boss 338's. 18x8 with 4.5 BS on the front (4.5 BS is all they offer) and 18x9.5 with just over 5" BS (this is also all they offer).... Will I need spacers or anything special for my 72 SWB....

Thanks
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Old 07-27-2011, 02:05 PM   #1007
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

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Originally Posted by djracer View Post
I hope I don't have these issues on a mustang II rotor. I bought these in a 18x8 and a 18x9.5 for my brothers 59 truck. We have the rears on and haven't done the fronts yet.
What size Rubber did you go with??
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Old 07-27-2011, 06:17 PM   #1008
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

Mine fit like a glove!
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Old 07-27-2011, 10:13 PM   #1009
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

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Originally Posted by Hickup pickup View Post
Mine fit like a glove!
Nice looking glove.
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Old 09-03-2011, 06:27 PM   #1010
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Question Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

The wheels will fit fine. The tires are what hits. That doesn't mean the wheel company is at fault because we pick tires bigger than what we should! My wheels had only a small issue. That was fixed in about 10 minutes. The center cap would go on but I was affaid it may pop off during the ride home so we shaved just enough off each spindale to satisfy me they wouldn't and they didn't.
The wheels fit fine. Why everyone is making this into something it isn't I don't understand. If you don't want the tires to scrub buy orignal wheels and narrow tires issue solved.
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Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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Old 09-03-2011, 07:10 PM   #1011
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

You must have 1" rotors...not 1 1/4" like most have...they don't fit the standard rotors...
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Old 09-03-2011, 07:19 PM   #1012
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Question Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

I haven't ever measured mine. What do I measure to get this?

Here is a picture of the drivers side.



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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
Seeing the USA in a 71


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2013,14 and 2016 Hot Rod Pour Tour


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Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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Old 09-03-2011, 09:44 PM   #1013
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

Quote:
Originally Posted by Andy4639 View Post
The wheels will fit fine. The tires are what hits. That doesn't mean the wheel company is at fault because we pick tires bigger than what we should! If you don't want the tires to scrub buy orignal wheels and narrow tires issue solved.
The earlier versions of the these wheels WILL NOT work the 1.250" wide rotor without modifying the nose of the rotor. The center cap still wouldn't fit on some even after making the wheels fit. They do fit the light duty 1" wide rotor/spindle combination. Also the backspacing is an issue on the rear.
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Old 09-03-2011, 09:52 PM   #1014
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

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Originally Posted by Andy4639 View Post
I haven't ever measured mine. What do I measure to get this?

Here is a picture of the drivers side.


Measure the thickness across the diameter.
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Old 09-03-2011, 10:16 PM   #1015
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Wink Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

OK,
thanks.
I had to put a 1/4" spacer on the back but that was because of the tire I chose not the wheel it self. I like the wheels. In the picture you can see where the hub was grinded just enough to fit.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver
Seeing the USA in a 71


Upstate SC GM Truck Club
2013,14 and 2016 Hot Rod Pour Tour


http://upstategmtrucks.com/



Get out and drive the truck this summer and have some fun!
It sucks not being able to hear!

LWB trucks rule, if you don't think so measure your SWB!
After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.
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Old 09-15-2011, 02:27 AM   #1016
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

Holy 41 pages.... my eyes hurt. Glad I found this one. Good info here
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Old 09-15-2011, 11:48 AM   #1017
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

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Originally Posted by funkytechmonkey View Post
Holy 41 pages.... my eyes hurt. Glad I found this one. Good info here
Don't you mean 51 pages?
Ha.

The fact is,... these wheels were designed for the 88-98 Chevy/GMC trucks.
We as consumers tried to make them fit on our 60-87 designed suspensions/trucks.

Boss Wheels was so close to hitting a "home run",... and they didn't even know it.
At least Coys Wheels added a few more backspacing choices to their wheels.
It's a shame an AMERICAN made wheel company (like AE/Boss) can't listen to the consumer.
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Old 09-15-2011, 11:51 AM   #1018
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

Quote:
Originally Posted by lolife99 View Post
Don't you mean 51 pages?
Ha.
41 pages in my view. Probably depends on how many posts per page you have set in your preferences.
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Old 09-15-2011, 12:46 PM   #1019
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

I got a set too, 20x8.5s all around with 255/45/20. I ground the front rotor nose and used 1" spacers in the back. I may not have needed the spacers in the back, but with the narrower track width of the rear compared to the front, it looks better with the spacers anyways.

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Old 09-15-2011, 01:08 PM   #1020
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

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Originally Posted by brossow View Post
41 pages in my view. Probably depends on how many posts per page you have set in your preferences.
I think you are correct!
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Last edited by lolife99; 09-15-2011 at 01:13 PM.
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Old 09-15-2011, 02:40 PM   #1021
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

For those of you looking for these wheels. Here is a pretty good deal from an ebay store (NOT MINE)


Boss Motorsports Wheele
Style 338, 20x8.5 front + 20x10 rear
5x5" CHEVY C10
$793.62 with FREE SHIPPING.

Here is the link.

Thats not bad for a bad price for a staggerd set.
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Old 09-15-2011, 02:51 PM   #1022
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

BTW... Are these the new ones or old ones? 3AA... Do you still have the machine the 1.25" rotors for these?

Boss Motorsports Wheels (made by American Eagle)
Style 338
Finish: Gray spokes with polished lip
Bolt Pattern: 5-lug, 5 x 5" (5x127mm)


Front: 20" x 8.5"
Offset: +14mm, Backspace: 5.25"
AEWC part# 3387-2850-3AA

Rear: 20" x 10"
Offset: +0mm, Backspace: 5.5"
AEWC part# 3387-2085-3AA
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Never wrenched a day in my life and now...
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with a Porterbuilt Dropmember, Acuair E-Level kit,
Boyd Welds Gas tank and mild c-notch.
Click here to view my build
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Old 09-15-2011, 02:54 PM   #1023
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

Quote:
Originally Posted by funkytechmonkey View Post
BTW... Are these the new ones or old ones? 3AA... Do you still have the machine the 1.25" rotors for these?
3AA = latest revision ... that still doesn't fit right, so yes, you still have to machine the HD rotors.
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Old 09-15-2011, 02:59 PM   #1024
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

Quote:
Originally Posted by funkytechmonkey View Post
BTW... Are these the new ones or old ones? 3AA... Do you still have the machine the 1.25" rotors for these?

Boss Motorsports Wheels (made by American Eagle)
Style 338
Finish: Gray spokes with polished lip
Bolt Pattern: 5-lug, 5 x 5" (5x127mm)


Front: 20" x 8.5"
Offset: +14mm, Backspace: 5.25"
AEWC part# 3387-2850-3AA

Rear: 20" x 10"
Offset: +0mm, Backspace: 5.5"
AEWC part# 3387-2085-3AA
I wonder if that rear offset is correct?
The only available backspace on their website for 20x10's is 6.225" (5x5 bolt pattern) and 6.698" (5x120mm bolt pattern).

http://www.bossmotorsports.com/wheel...ecs.cfm?id=408
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Old 09-15-2011, 03:34 PM   #1025
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Re: Got some new wheels: Boss 338's in 20x10 and 20x8.5

Quote:
Originally Posted by funkytechmonkey View Post
Rear: 20" x 10"
Offset: +0mm, Backspace: 5.5"
AEWC part# 3387-2085-3AA
After further consideration, something's weird with the part number on the second. The PN for 20x10 338s in grey has always been 3387-2050-3-AA and the offset is +20mm. Maybe they've come out with a new revision?? With zero offset, that would move the wheel outward roughly 3/4" and make them fit about perfectly. If that's the case, then all they need to do is fix the hub bore issue up front and these could be near-perfect bolt-ons for our older trucks.
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