boss 338 backspace - The 1947 - Present Chevrolet & GMC Truck Message Board Network

0608272c-10 · 12-31-2013, 08:02 PM

Im looking at ordering a set of boss 338 wheels. My question is does anyone know the correct backspacing and offset for a bagged 72 c-10 thanks all happy new year everyone.

**lolife99** · 12-31-2013, 08:12 PM

20x10 with a 5.5" BS is the closest you can get in a 20 for the rear.
I would run a 20x8.5 with a 5.25" BS up front.
What size were you looking at?

0608272c-10 · 12-31-2013, 10:16 PM

Exactly the sizes that you had posted must have read my mind haha. Now I hear everyone is doing the rotor mod to make them fit can you explain more?

**lolife99** · 12-31-2013, 10:23 PM

Just about 5 minutes of radiusing the "nose" of the rotor hub with a grinder or flap disc.

0608272c-10 · 12-31-2013, 10:33 PM

Perfect thanks a lot can't wait to be rolling on those bad boys

del4fun · 01-01-2014, 11:08 AM

Boss 338 wheels 20x10, 18x8

Z10 · 01-01-2014, 01:47 PM

Quote:

Originally Posted by del4fun

Boss 338 wheels 20x10, 18x8

del4fun, Very nice truck.
I'm using the same set up on my 72 Step. What brand and size are your tires?
Thanks,

del4fun · 01-01-2014, 02:48 PM

Quote:

Originally Posted by Z10

del4fun, Very nice truck.
I'm using the same set up on my 72 Step. What brand and size are your tires?
Thanks,

245/45/18, 275/40/20, Nitto

0608272c-10 · 01-01-2014, 05:56 PM

Where did you guys get your wheels from?

Z10 · 01-01-2014, 06:25 PM

Quote:

Originally Posted by 0608272c-10

Where did you guys get your wheels from?

Ebay for me.

fastnotch89 · 01-01-2014, 07:50 PM

I got mine straight from eagle alloy... I use to work for them in high school, paid $810 for my 22 inch 338's

Torpa · 02-24-2014, 10:34 PM

First post on this forum. I have been researching these Boss 338 rims. I found a guy who could get them for me per my request for 20x10's 5 on 5 with a back space of 5.5 inches. As I kept searching for the best buy, I had a guy tell me that Boss only makes that wheel with a 6.23 inch back space. The part numbers from each vendor match, I'm getting different information on the back space. Any help would be appreciated.

Vova · 02-24-2014, 10:38 PM

Quote:

Originally Posted by lolife99

Just about 5 minutes of radiusing the "nose" of the rotor hub with a grinder or flap disc.

I was wondering why mine didn't fit. I'll have to pull out the grinder tonight.

12-31-2013, 08:02 PM	#1
0608272c-10 Registered User Join Date: Nov 2011 Location: enfield ct Posts: 67	boss 338 backspace Im looking at ordering a set of boss 338 wheels. My question is does anyone know the correct backspacing and offset for a bagged 72 c-10 thanks all happy new year everyone.

12-31-2013, 08:12 PM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,701	Re: boss 338 backspace 20x10 with a 5.5" BS is the closest you can get in a 20 for the rear. I would run a 20x8.5 with a 5.25" BS up front. What size were you looking at? __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

12-31-2013, 10:16 PM	#3
0608272c-10 Registered User Join Date: Nov 2011 Location: enfield ct Posts: 67	Re: boss 338 backspace Exactly the sizes that you had posted must have read my mind haha. Now I hear everyone is doing the rotor mod to make them fit can you explain more?

12-31-2013, 10:23 PM	#4
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,701	Re: boss 338 backspace Just about 5 minutes of radiusing the "nose" of the rotor hub with a grinder or flap disc. Attached Images __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

12-31-2013, 10:33 PM	#5
0608272c-10 Registered User Join Date: Nov 2011 Location: enfield ct Posts: 67	Re: boss 338 backspace Perfect thanks a lot can't wait to be rolling on those bad boys

01-01-2014, 11:08 AM	#6
del4fun Registered User Join Date: Nov 2011 Location: Vacaville, California Posts: 215	Re: boss 338 backspace Boss 338 wheels 20x10, 18x8 Attached Images __________________ US ARMY RET, SUPPORT THE TROOPS 1972 Custom/10 Short Fleet 4.5/ 5 Drop Dogg Pound Customs

01-01-2014, 05:56 PM	#9
0608272c-10 Registered User Join Date: Nov 2011 Location: enfield ct Posts: 67	Re: boss 338 backspace Where did you guys get your wheels from?

01-01-2014, 07:50 PM	#11
fastnotch89 Registered User Join Date: Apr 2013 Location: Clover,SC Posts: 142	Re: boss 338 backspace I got mine straight from eagle alloy... I use to work for them in high school, paid $810 for my 22 inch 338's

02-24-2014, 10:34 PM	#12
Torpa Registered User Join Date: Feb 2014 Location: Newberg, OR Posts: 1	Re: boss 338 backspace First post on this forum. I have been researching these Boss 338 rims. I found a guy who could get them for me per my request for 20x10's 5 on 5 with a back space of 5.5 inches. As I kept searching for the best buy, I had a guy tell me that Boss only makes that wheel with a 6.23 inch back space. The part numbers from each vendor match, I'm getting different information on the back space. Any help would be appreciated.



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