Wheel Back Spacing - The 1947 - Present Chevrolet & GMC Truck Message Board Network

justin · 08-07-2002, 04:55 PM

Any one know the backspacing for 17 or 18 rims for these trucks?
Or does the size of the wheel matter???

J · 08-07-2002, 05:11 PM

This is one time when size doesn't matter. I have always heard 4 1/2 inches is just right no matter how tall the rim is.

jay-dawg · 08-07-2002, 05:55 PM

hmmm.. that's good to know. My s10 takes the same backspacing. Looks like I can fit my future 18s for both trucks.

jay

XXL · 08-07-2002, 06:27 PM

It depends on the ride height of the truck and wheel/tire size. And it also depends on whether you've got a stepside or fleetside. I have 5" BS on my 17x8's.

Kenneth

Chevyc10! · 08-07-2002, 06:30 PM

Just FYI Justin...S10's have a different bolt pattern ( 5on4 3/4) Our trucks have a 5 on 5 bolt pattern...

jay-dawg · 08-07-2002, 06:50 PM

Hi chevyc10.

I guess you are right. I thought it was the same 5 3/4. I think ECE has one with the 5 3/4 front spindle/brake kit. I'll have to look that up.

thanks again,
jay

big.l.a · 08-07-2002, 07:05 PM

That Is not true about the S10 I guess It will depend on the year of the S10. Because I have a set of S10 (92) Rims on my truck now and they fit perfect. ( now mods)

eminentbass · 08-07-2002, 07:22 PM

my buddy is putting on 18.5 "wide mickey t's and on his 15,s he will have to have 5.5"bs so they wil fit so make some mesurements and go from there.

XXL · 08-07-2002, 08:04 PM

Quote:

Originally posted by big.l.a
That Is not true about the S10 I guess It will depend on the year of the S10. Because I have a set of S10 (92) Rims on my truck now and they fit perfect. ( now mods)

You might check again on those S-10 rims. GM "S" (S-10 trucks) and "T" (Blazer/Jimmy) trucks have always been 5 x 4.75 pattern. It is possible you have either a dual pattern wheel (one that has 10 holes, 5 for each pattern) or a Unilug pattern (one where the wheel holes are oval and you use a special lug nut and washer to attach them.

Kenneth

HvyChevy454 · 08-07-2002, 08:23 PM

ive got 15x12 w/ 15.5 MT's out back but i have 8'' backspacing, with the stock axle width

E.R. Leonard · 08-08-2002, 06:04 PM

Some rear ends are wider than others, 67 has shorter axles than most. This will affect backspacing also. Be careful about a generic number.

08-07-2002, 04:55 PM	#1
justin PROJECT LO-LYF Join Date: Jul 2002 Location: MO. Posts: 283	Wheel Back Spacing Any one know the backspacing for 17 or 18 rims for these trucks? Or does the size of the wheel matter???

08-07-2002, 05:11 PM	#2
J Registered User Join Date: Oct 2001 Location: Yuma, AZ Posts: 164	This is one time when size doesn't matter. I have always heard 4 1/2 inches is just right no matter how tall the rim is. __________________ '72 C-10 '99 Silverado '91 S-Dime

08-07-2002, 05:55 PM	#3
jay-dawg chevelito Join Date: Jun 2001 Location: Honolulu, HI USA Posts: 1,609	hmmm.. that's good to know. My s10 takes the same backspacing. Looks like I can fit my future 18s for both trucks. jay __________________ New deadline...when my son can drive. Aloha from Honolulu, HI

08-07-2002, 06:27 PM	#4
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	It depends on the ride height of the truck and wheel/tire size. And it also depends on whether you've got a stepside or fleetside. I have 5" BS on my 17x8's. Kenneth __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

08-07-2002, 06:30 PM	#5
Chevyc10! Registered User Join Date: Dec 2000 Location: Centerville Ga. USA Posts: 804	Just FYI Justin...S10's have a different bolt pattern ( 5on4 3/4) Our trucks have a 5 on 5 bolt pattern... __________________ 68 SWB The Surgeon General doesn't say anything about smoking a Ford!!! Would rather be ran over repeatedly by a Chevy than drive a Ford!!! Paralyzed from the neck up and confined to a hat! Kathleen, Georgia USA

08-07-2002, 06:50 PM	#6
jay-dawg chevelito Join Date: Jun 2001 Location: Honolulu, HI USA Posts: 1,609	Hi chevyc10. I guess you are right. I thought it was the same 5 3/4. I think ECE has one with the 5 3/4 front spindle/brake kit. I'll have to look that up. thanks again, jay __________________ New deadline...when my son can drive. Aloha from Honolulu, HI

08-07-2002, 07:05 PM	#7
big.l.a Registered User Join Date: Jan 2002 Location: Allen, TX. USA Posts: 210	Bolt pattern for S10 That Is not true about the S10 I guess It will depend on the year of the S10. Because I have a set of S10 (92) Rims on my truck now and they fit perfect. ( now mods) __________________ 71 C10 LWB With Edelbrock 7101& 1406 Carb Accel HEI Blue Print Accel 8.8 Wires Soon to have possi & 186 Camel hump heads Dropped 2-1/2F&4R Dynomax Headers Duals Flowtech Aftburners Tonneau Cover Frm 89 F150 79 Monte C Last edited by big.l.a; 08-07-2002 at 07:07 PM.

08-07-2002, 07:22 PM	#8
eminentbass Registered User Join Date: Mar 2002 Location: saskatoon saskatchewan Canada Posts: 38	my buddy is putting on 18.5 "wide mickey t's and on his 15,s he will have to have 5.5"bs so they wil fit so make some mesurements and go from there. __________________ 68 gmc 70 chev

08-07-2002, 08:23 PM	#10
HvyChevy454 Slowly getting CRSS... Join Date: Jul 2001 Location: Lutz, Florida Posts: 656	ive got 15x12 w/ 15.5 MT's out back but i have 8'' backspacing, with the stock axle width __________________ -Nic Lutz, Fl My Team Website The Heavy Chevy Website ------------------ 72 Cheyenne 10 LWB GM 12-bolt 3.08 w/ Auburn Posi 91 454 Edel Performer RPM Intake 750 cfm carb Comp Cam 268/.495 Hedman Headers Dual 3'' Exhaust 71 Cheyenne 20 4x4 Fact. A/C PS PB Tilt Currently in the works... Speak Softly and Carry A Big Block... There is No replacement for Displacement... "If everything seems under control, you're just not going fast enough." - Mario Andretti

08-08-2002, 06:04 PM	#11
E.R. Leonard Registered User Join Date: Apr 2000 Location: angleton TEXAS Posts: 367	Some rear ends are wider than others, 67 has shorter axles than most. This will affect backspacing also. Be careful about a generic number. __________________ 67 C10 LT1 project step side 68 C10 250 short step side original 69 CORVETTE CONV 427, 4spd, 6-pak 99 CORVETTE CONV 78 chevy 2wd blazer Angleton, Texas

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