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#1 |
Registered User
Join Date: Sep 2009
Location: St George, Utah
Posts: 95
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How tall a tire on a lowered Suburban
Hey all, I've got a 77 Suburban I want to drop 6". It currently has 265-75-16 tires on 8.5" wide wheels with 4.5" backspacing (about 31.75" tall). Can I run those tires for now with that much drop? I plan on 275-45-20s on down the road, about 29.7" tall.
Thanks for any insight!!!
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-Ben, Check out my website! http://www.streetroddesigns.com 1977 C2500 'Burby w/454 1979 Olds Cutlass Pro Touring wagon "Pumkinator" 1985 GMC S15 Slammed Daily Driver & Autocrosser |
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#2 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: How tall a tire on a lowered Suburban
Definitely would not work for a 6" front drop.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#3 |
Registered User
Join Date: Sep 2009
Location: St George, Utah
Posts: 95
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Re: How tall a tire on a lowered Suburban
Thanks for the input.
Maybe I should back up, how much drop will an axle flip yield on a 1/2 ton Suburban? If I match the front drop with an axle flip with, anybody know how tall a tire I can run?
__________________
-Ben, Check out my website! http://www.streetroddesigns.com 1977 C2500 'Burby w/454 1979 Olds Cutlass Pro Touring wagon "Pumkinator" 1985 GMC S15 Slammed Daily Driver & Autocrosser |
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#4 |
Diggin The SquareLife
Join Date: Dec 2010
Location: garland,tx
Posts: 1,933
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Re: How tall a tire on a lowered Suburban
I don't think you should match the front drop with the rear drop as the rear is higher than the front by 2"
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#5 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: How tall a tire on a lowered Suburban
4-5" drop up front could get by w/a 28" tire. For 6" drop, a ~27" tire would be better. However much more drop there is subtracts from that 28" starting point.
All trucks are different so there is no one correct answer.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#6 | |
Registered User
Join Date: Sep 2009
Location: St George, Utah
Posts: 95
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Re: How tall a tire on a lowered Suburban
Quote:
27" sounds super short for a 20" wheel. :/ I want a decent ride too. The truck will be a family cruiser and sometimes we drive 4 -6 hours to go see family or take my pro touring car to autocross events.
__________________
-Ben, Check out my website! http://www.streetroddesigns.com 1977 C2500 'Burby w/454 1979 Olds Cutlass Pro Touring wagon "Pumkinator" 1985 GMC S15 Slammed Daily Driver & Autocrosser |
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#7 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: How tall a tire on a lowered Suburban
Quote:
If you're trying to level the stance, a 4/6 drop would accommodate a 28" front tire. Beyond that drop, your options will be a shorter tire, removing the inner wells, or swapping in aftermarket units.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#8 |
Registered User
![]() Join Date: Dec 2006
Location: Gallatin, Tn
Posts: 676
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Re: How tall a tire on a lowered Suburban
Here's a pic of a suburban a friend of mine owned. It had a 5/7 drop with 20x8 & 20x10 wheels. The tires were 255/35/20 (27") and a 275/40/20 (28.5"). No problems with rubbing but It was a little harsh on big bumps because of the low profile tires.
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Follow me on Instagram: @midtennc10 Youtube channel: Midtennc10 |
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#9 |
Registered User
Join Date: Sep 2009
Location: St George, Utah
Posts: 95
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Re: How tall a tire on a lowered Suburban
Thanks for the great info guys. I have a spare set of front inner fenders so I can do a little fab work and widen or make them taller. How about turning, should I expect any rubbing with the 275-45-20?
__________________
-Ben, Check out my website! http://www.streetroddesigns.com 1977 C2500 'Burby w/454 1979 Olds Cutlass Pro Touring wagon "Pumkinator" 1985 GMC S15 Slammed Daily Driver & Autocrosser |
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#10 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: How tall a tire on a lowered Suburban
That's a fairly large combo for the front so it will boil down to wheel width & back-spacing. Keep the BS aggressive & it will minimize the rub on the outer edge.
__________________
67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#11 |
Registered User
Join Date: Sep 2009
Location: St George, Utah
Posts: 95
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Re: How tall a tire on a lowered Suburban
I'm looking at MB Old Schools, 20x9.5 with 15mm offset (5.8").
__________________
-Ben, Check out my website! http://www.streetroddesigns.com 1977 C2500 'Burby w/454 1979 Olds Cutlass Pro Touring wagon "Pumkinator" 1985 GMC S15 Slammed Daily Driver & Autocrosser |
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#12 |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,698
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Re: How tall a tire on a lowered Suburban
That's a wide front wheel.
Most run a 20x8.5 with a 5.25" or greater backspace. (that would be 6.25" BS on your 20x9.5" wheels)
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 04-20-2016 at 09:17 PM. |
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#13 |
Registered User
Join Date: Jul 2015
Location: earth
Posts: 99
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Re: How tall a tire on a lowered Suburban
With a 4/6 drop on 7 inch wide wheels i fit a 29 inch tire up front and never rubbed, and fit some 31x10.5 on the rears with a bunch of extra room
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#14 |
Registered User
Join Date: Sep 2009
Location: St George, Utah
Posts: 95
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Re: How tall a tire on a lowered Suburban
Thanks for the great info. I've spent my life with muscle cars, Click HERE for a link to my other toy, my 79 Cutlass wagon that I drive to work and have set up for autocross on the weekends. I'm in the middle of an engine swap on the car and some visual upgrades, (see rendering below) then I'll get on the Burban next. This is my first personal lowered truck project so I really appreciate the insight.
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__________________
-Ben, Check out my website! http://www.streetroddesigns.com 1977 C2500 'Burby w/454 1979 Olds Cutlass Pro Touring wagon "Pumkinator" 1985 GMC S15 Slammed Daily Driver & Autocrosser Last edited by SRD art; 04-21-2016 at 02:34 AM. |
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#15 |
Registered User
Join Date: Sep 2009
Location: St George, Utah
Posts: 95
|
Re: How tall a tire on a lowered Suburban
I got some more first hand info- I visited with an old friend last night who has a dropped crew cab that has been converted to 5 lug and dropped the same way I plan to do mine. He runs a 265-35-22 which is 29.3" tall on a 9.5" wheel. He said with front inner fender wells it rubbed quite a bit. He removed the fender wells and it hasn't rubbed since. That's encouraging. I'll be looking at modifying the fenderwells when I get the wheels and tires and test fit it all.
__________________
-Ben, Check out my website! http://www.streetroddesigns.com 1977 C2500 'Burby w/454 1979 Olds Cutlass Pro Touring wagon "Pumkinator" 1985 GMC S15 Slammed Daily Driver & Autocrosser |
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