US Mags Indy wheel fitment - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**HO455** · 02-02-2022, 03:16 PM

Having searched to no avail as to whether the new classic slotted U.S. Mags Indy U101 wheels will fit a 71-72 disk brake front end.
My Burban has been converted to 5 lug with 71-72 front end components and a rear axle.
I am planning on the 15x8 wheels with 4 inch backspacing.
My current wheels are only 3.5" backspacing
Any help would be appreciated. I am hoping someone can confirm them clearing the brakes so I can order all 4 at once instead of just one to test clearance.

I should have done this post 2 weeks ago as I see the prices have jumped $13 a wheel since then. DHOOO!

https://www.summitracing.com/parts/usm-u10115807340

CG · 02-02-2022, 07:18 PM

Those will look so good on your burb. I hope they work out for ya.

SCOTI · 02-03-2022, 04:15 PM

Quote:

Originally Posted by HO455

Having searched to no avail as to whether the new classic slotted U.S. Mags Indy U101 wheels will fit a 71-72 disk brake front end.
My Burban has been converted to 5 lug with 71-72 front end components and a rear axle.
I am planning on the 15x8 wheels with 4 inch backspacing.
My current wheels are only 3.5" backspacing
Any help would be appreciated. I am hoping someone can confirm them clearing the brakes so I can order all 4 at once instead of just one to test clearance.

I should have done this post 2 weeks ago as I see the prices have jumped $13 a wheel since then. DHOOO!

https://www.summitracing.com/parts/usm-u10115807340

I'm not sure what the concern is regarding the wheels inquired about not working w/the specifically mentioned 71-72 5-lug set-up? I've seen them on Squarebody trucks for sure & they're similar as far as the suspension & brake set-ups :

30772 · 02-03-2022, 05:22 PM

Fit is perfect on my 72 K20 disc brake front end....if that is any help?

**HO455** · 02-03-2022, 07:35 PM

Quote:

Originally Posted by SCOTI

I'm not sure what the concern is regarding the wheels inquired about not working w/the specifically mentioned 71-72 5-lug set-up? I've seen them on Squarebody trucks for sure & they're similar as far as the suspension & brake set-ups :

My concerns are sparked by today's "That's close enough! " manufacturing tolerances. As an example when I replaced my lower control arms with reproduction ones I had to grind about 3/16" off of the end of the control arm to allow the rotors to turn. Photo below.
My current wheels that fit with a 3.5" backspacing, very likely would rub the tie rod with a 4" backspacing. Unfortunately none of the currently available 15" slotted mags come in a 3.5" backspacing.
I was hoping that I might avoid some shipping return hassles by posing the question here first.

Thanks CG!

**HO455** · 02-03-2022, 07:40 PM

Quote:

Originally Posted by 30772

Fit is perfect on my 72 K20 disc brake front end....if that is any help?

I wish it was more of an apples to apples comparison. But seeing how good they look on your truck assures me I'm making the right style choice. Thanks.
Great looking truck by the way!

57taskforce · 02-03-2022, 07:49 PM

Quote:

Originally Posted by 30772

Fit is perfect on my 72 K20 disc brake front end....if that is any help?

I’ve been saving for a set for my K20 for a bit now. They look so good on these trucks.
Love yours!

SCOTI · 02-03-2022, 08:14 PM

Quote:

Originally Posted by HO455

My concerns are sparked by today's "That's close enough! " manufacturing tolerances. As an example when I replaced my lower control arms with reproduction ones I had to grind about 3/16" off of the end of the control arm to allow the rotors to turn. Photo below.
My current wheels that fit with a 3.5" backspacing, very likely would rub the tie rod with a 4" backspacing. Unfortunately none of the currently available 15" slotted mags come in a 3.5" backspacing.
I was hoping that I might avoid some shipping return hassles by posing the question here first.

Thanks CG!

Makes sense.

CG · 02-03-2022, 09:48 PM

I think I have a set of five lug and a set of six lug mags put away somewhere with our trucks bolt patterns. But I would rather have a new set.

**HO455** · 02-08-2022, 04:08 PM

I'm feeling the need for new ones too! After the ordeal I had getting one of the current wheels repaired after the wreck, being able to order a new replacement if needed sounds like a great idea.

**HO455** · 02-21-2022, 08:22 PM

As a follow up I got the wheels and they fit great.
Even with the back spacing difference there is slightly more room between the tie rod end and the wheels outer edge compared to the old wheels.
Wheel weights need to be placed carefully so the won't contact the brake caliper.
The rear axle hub is a very close fit (Hub centric) and any deformity or build up of rust will prevent the wheel from fitting correctly.

CG · 02-21-2022, 08:29 PM

Wow, those look great!

**Boog** · 02-22-2022, 12:27 AM

It looks good. I'm mostly glad you went with 15". It just looks right!

**HO455** · 02-22-2022, 09:34 PM

Thanks everyone. I appreciate it.

71gmcC15 · 02-23-2022, 02:51 PM

Do you think 15x10s 4 inch back spacing would fit?

**HO455** · 02-23-2022, 04:25 PM

I can take some pictures and get some measurements for you.
My 67 Suburban has the wider 71-72 12 bolt rear end in it. You will need to take that into consideration if you have a different rear end.

**HO455** · 02-23-2022, 04:29 PM

I forgot to mention that I found that the price on the wheels through Jegs had not gone up like Summit's had.
If you're on the edge of ordering some best not delay. Summit had raised the price $13 a wheel.

02-02-2022, 03:16 PM	#1
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,962	US Mags Indy wheel fitment Having searched to no avail as to whether the new classic slotted U.S. Mags Indy U101 wheels will fit a 71-72 disk brake front end. My Burban has been converted to 5 lug with 71-72 front end components and a rear axle. I am planning on the 15x8 wheels with 4 inch backspacing. My current wheels are only 3.5" backspacing Any help would be appreciated. I am hoping someone can confirm them clearing the brakes so I can order all 4 at once instead of just one to test clearance. I should have done this post 2 weeks ago as I see the prices have jumped $13 a wheel since then. DHOOO! https://www.summitracing.com/parts/usm-u10115807340 __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

02-02-2022, 07:18 PM	#2
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 19,816	Re: US Mags Indy wheel fitment Those will look so good on your burb. I hope they work out for ya. __________________ … … … … … … … … ... … … … … … … … … … … …

02-03-2022, 05:22 PM	#4
30772 Registered User Join Date: Feb 2020 Location: MT Posts: 34	Re: US Mags Indy wheel fitment Fit is perfect on my 72 K20 disc brake front end....if that is any help? Attached Images

02-03-2022, 09:48 PM	#9
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 19,816	Re: US Mags Indy wheel fitment I think I have a set of five lug and a set of six lug mags put away somewhere with our trucks bolt patterns. But I would rather have a new set. __________________ … … … … … … … … ... … … … … … … … … … … …

02-08-2022, 04:08 PM	#10
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,962	Re: US Mags Indy wheel fitment I'm feeling the need for new ones too! After the ordeal I had getting one of the current wheels repaired after the wreck, being able to order a new replacement if needed sounds like a great idea. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

02-21-2022, 08:22 PM	#11
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,962	Re: US Mags Indy wheel fitment As a follow up I got the wheels and they fit great. Even with the back spacing difference there is slightly more room between the tie rod end and the wheels outer edge compared to the old wheels. Wheel weights need to be placed carefully so the won't contact the brake caliper. The rear axle hub is a very close fit (Hub centric) and any deformity or build up of rust will prevent the wheel from fitting correctly. Attached Images __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

02-21-2022, 08:29 PM	#12
CG BlahBlahBlah Join Date: Feb 2002 Location: Wa. Posts: 19,816	Re: US Mags Indy wheel fitment Wow, those look great! __________________ … … … … … … … … ... … … … … … … … … … … …

02-22-2022, 12:27 AM	#13
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,080	Re: US Mags Indy wheel fitment It looks good. I'm mostly glad you went with 15". It just looks right! __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

02-22-2022, 09:34 PM	#14
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,962	Re: US Mags Indy wheel fitment Thanks everyone. I appreciate it. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

02-23-2022, 02:51 PM	#15
71gmcC15 Registered User Join Date: Feb 2018 Location: Doland SD Posts: 836	Re: US Mags Indy wheel fitment Do you think 15x10s 4 inch back spacing would fit? __________________ ( second times the charm) 71 gmc c15 307 sbc 373 rear gears positrac sm 465 trans. ( not listed on spid but is original ) 94 chevy k1500 350 tbi 373 rear gears 4l60e one wheel peel. Gutless 07 gmc sierra classic rcsb 4.3 lt 5 speed w/t 04 chevy Silverado 1500 ext cab 5.3 4l60e. 81 chevy Scottsdale k10 muncie sm465 Np208 10 bolt 8.2 ( Old Green)

02-23-2022, 04:25 PM	#16
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,962	Re: US Mags Indy wheel fitment I can take some pictures and get some measurements for you. My 67 Suburban has the wider 71-72 12 bolt rear end in it. You will need to take that into consideration if you have a different rear end. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

02-23-2022, 04:29 PM	#17
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,962	Re: US Mags Indy wheel fitment I forgot to mention that I found that the price on the wheels through Jegs had not gone up like Summit's had. If you're on the edge of ordering some best not delay. Summit had raised the price $13 a wheel. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377



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