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#1 |
Registered User
Join Date: Sep 2004
Location: Elkins, West Virginia
Posts: 2,542
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proper backspacing for 20" Coys
i'm def leaning towards getting some 20" coys wheels,...looking at 20X8.5 in the front and 20x10 in the rear.
for tires, i'm thinking 255-40-20 in the front and 295-40-20 in the rear. they offer two different options for backspacing in those two size wheels, for the 20x8.5, they offer 4 3/4 ", 5 1/4" inch for the 20x10", they offer 5", 5 1/2" inch i'm going 5/7 drop with shackles/flip kit rear, springs/spindles up front what do you all recommend? stance is everything, and i dont want to mess it up by getting the wrong stuff thanks
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1987 350 TBI lowered 5/7 |
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#2 |
Registered User
![]() Join Date: Aug 2008
Location: New Orleans Louisiana.....a great place to visit but you wouldn't want to live here!!!
Posts: 883
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Re: proper backspacing for 20" Coys
I would go max backspacing front and back since you are going that low.
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Down......with the sickness!! |
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#3 |
Registered User
Join Date: May 2002
Location: NJ
Posts: 910
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Re: proper backspacing for 20" Coys
Not sure about the fronts but I think even with a 5" BS for the rear the wheels will sit in too far and you will need a spacer.
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83 C10 Stepside (SOLD, it was a blast!) 383 MASS-FLO EFI/TKO II 600/3.90 Posi 10 bolt S475 and C4 DM running, fine tuning turbo= ![]() Douchebag Racing: Runs Fine all the Time |
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#4 |
Registered User
Join Date: Nov 2007
Location: New Jersey
Posts: 466
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Re: proper backspacing for 20" Coys
Here are my Coys. 20x8.5 with 5.25 and 20x10 with 5.00
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2010 Tahoe 1984 C10 2005 Harley FLH 1941 Willys Pickup (will never get it done) not for sale Last edited by 1984 swb chevy; 03-16-2009 at 09:26 PM. |
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#5 |
Senior Member
Join Date: May 2004
Location: Caldwell,Tx.
Posts: 3,648
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Re: proper backspacing for 20" Coys
Bigarmzz, I think crawdadfox has the answer . I am having my 20x10's built with 5.25 inches of backspace and will be running the same tire size you mentioned . I measured the wheeltub and there is about 14 inches of clearance under there . 5.25 sitts it a little closer to the outside than the inside but it will give a nice amount of clearance on both . I know 4.5 inches of backspace will rub the outside . That being said , I would order the 5.5bs so you will have clearance . If you could get a 5.25 I would say go with that but since you only have two choices ,5.5. If I ever order Coys , they will be the max backspacing .
Frank
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Born and proudly residing in a Red State ! |
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#6 |
Slugish
![]() Join Date: Jan 2005
Location: Earlysville, Va.
Posts: 1,024
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Re: proper backspacing for 20" Coys
X 2 ON FRANKS & OTHERS COMMENTS > MAX BACKSPACING ON THE SIZES YOU WANT. lOT OF MONEY TO SPEND ON SOMETHING THATS GONNA RUB.
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#7 |
*NO REGRETS*
Join Date: Oct 2006
Location: Rockwall, Texas
Posts: 498
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Re: proper backspacing for 20" Coys
So, if I've calculated right 22x9's with a 5.5 bs in front and 5 in the rear should be perfect on a square body? Laid out of course!
Last edited by rustSpot; 02-26-2010 at 03:08 PM. |
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#8 |
Formerly- 1972SuperCheyenne
![]() Join Date: Oct 2008
Location: Wake Forest NC
Posts: 5,782
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Re: proper backspacing for 20" Coys
Yes buddy, max backspace front and rear.
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--Josh My Build Thread:http://67-72chevytrucks.com/vboard/s...d.php?t=799218 A good crossthread is better than Loctite any day. Life is not about what you have, but who you have to share it with. |
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#9 |
*NO REGRETS*
Join Date: Oct 2006
Location: Rockwall, Texas
Posts: 498
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Re: proper backspacing for 20" Coys
Max in the rear would be 5.5? I was thinking I could get away with 5?
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#10 |
Registered User
Join Date: Oct 2009
Location: Waterboro ,MAINE
Posts: 547
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Re: proper backspacing for 20" Coys
with 5.5 on the rear how much tire to fender room is there i know it depends on tire width but just a appox. would be ok !
1 what is the narrowest tire i can put on a 8.5 inch rim i dont care for that wide front tire look !!!!
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78 C-10 5.3 LSX -4L60E |
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#11 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: proper backspacing for 20" Coys
I would do 20x8.5's w/5.25" on front & 20x10's w/5.50" in the rear. The rears fit well w/the described drop. Depending on amounts of spindle + springs, the front tire choice might be a bit tall for that drop though....
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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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#12 |
Registered User
Join Date: Oct 2009
Location: Portland, OR
Posts: 198
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Re: proper backspacing for 20" Coys
Nice truck Scoti. I love ur stance with the rims. Anything diffrent for the stepside or its all the same.
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#13 |
Registered User
Join Date: Mar 2010
Location: Ocala, Fl.
Posts: 39
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Re: proper backspacing for 20" Coys
hey Scoti truck looks great! What size tire are you running in the rear? Thanks
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#14 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: proper backspacing for 20" Coys
295-40's.
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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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#15 |
Registered User
Join Date: Dec 2008
Location: Tucson, Az.
Posts: 75
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Re: proper backspacing for 20" Coys
Scoti nice truck what size you running up front and how much drop..thanks
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#16 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: proper backspacing for 20" Coys
Quote:
I didn't run the Coy's on there for more than a few hours because the front tires constantly buzzed the top of the inner wheel wells (they were purchased for my 68 but I put them on the 74 to see if I liked the grey wheels w/that paint scheme). I definitely needed some modified wheel wells for that combo.
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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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#17 |
67-72 parts collector,…
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,698
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Re: proper backspacing for 20" Coys
Good BACKSPACE thread to bring to the top!
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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