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#1 |
Registered User
![]() Join Date: Sep 2015
Location: Boulder, CO (SLC, UT for the moment)
Posts: 23
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quick backspacing question
thinking about putting some 15x8 Rallys on my 72, but these wheels have a 4.5" backspace. as I understand, that's so they can tuck under better, yes? so I can run a taller tire? I haven't lowered the truck any yet, and may not get to that for a while. so, running this backspace, it's not going to make the truck look weird, is it? like, too narrow a track? if so, I could run down some 15x8 Rallys with no backspace, probably.
I searched all through here for an answer to this, and probably read it sixteen times, but I wanted to be sure before I do it. thanks for any help.
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no build thread, but I could probably rig together a bill-thread |
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#2 |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,696
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Re: quick backspacing question
Are you sure they are 4.5" backspace?
(pics?) If so they will rub on your tierod 4" is usually the max backspace on a 15" diameter wheel up front.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#3 |
Registered User
![]() Join Date: Sep 2015
Location: Boulder, CO (SLC, UT for the moment)
Posts: 23
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Re: quick backspacing question
man, don't want that rubbing action. hadn't even considered that. thanks. and, don't have them yet, was only considering them:
https://cosprings.craigslist.org/wto/5409519546.html
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no build thread, but I could probably rig together a bill-thread |
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#4 | |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,696
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Re: quick backspacing question
Quote:
They have a 4" backspace. NOT 4.5"
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#5 |
Registered User
![]() Join Date: Sep 2015
Location: Boulder, CO (SLC, UT for the moment)
Posts: 23
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Re: quick backspacing question
good to know, thanks. so, he's got the specs in the listing wrong? I'm guessing if 4.5" will rub, though, then 4" might as well. may just wait till some with no offset show up, I guess.
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no build thread, but I could probably rig together a bill-thread |
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#6 |
Registered User
Join Date: Oct 2013
Location: Dresden, Ontario
Posts: 647
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Re: quick backspacing question
An 8" wide rim with 4.0 backspacing is 0 Offset.
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1970 Short Wide 5.3 4L60E BlackBear tune 3:73 gears, Boyd's Tank 2.5 / 4 drop 5 lug disc brakes Vintage Air 18x8 Ridlers 255/55 frt. 18x9.5 275/60 rear |
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#7 |
Registered User
![]() Join Date: Sep 2015
Location: Boulder, CO (SLC, UT for the moment)
Posts: 23
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Re: quick backspacing question
ah. so it's just a stock-normal rally rim, then? guess that wouldn't rub. cool. maybe I'll pick these up. thanks.
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no build thread, but I could probably rig together a bill-thread |
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