Can some one tell me how do i know the backspacing on my wheels? they are 18x8.5.
I got them for my truck but now i'm selling them and the person is asking me about the spacing.
thanks for helping.

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2000 XLT,EXT CAB,BLACK,5.4,AUTO,K&N FIPK,BILLET GRILL,SS MIRRORS,CLEAR CORNERS,BLUE HEAD & REVERSE LIGHTS,DUAL FLOWMASTERS,3.5"TIPS ON FRONT OF REAR RIGHT WHEEL,4-6 DROP,18"KMC CHROME TARANTULAS,WITH 255-45-ZR18"S

 

Sorry i can't tell ya more, but you can't figure out the backspacing of a rim by its width or diameter. I have 16x10 wheels and they have a -23mm backspacing. But most 16x10 wheels are 0 and some are positive backspacing. If you give the brand and name of the wheel, someone might can help you out better...sorry


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-Brandon Warford
97 F150 4x4 Sport Brt. Red SuperCab
4.6l Triton V8
3.55LS
3" Performance Acc. Body Lift & lift lips
1-1.5" torsion bar adjust. so it sits level
Clear Corner Lenses
315/75R16 Yoko. Geolander MTs
American Racing Atlas 16x10
Pioneer 8000 3D series
Boston Acoustic 5x7s
Sony Xplode 4ch Amp
(2) 8" RF XLC Subs
True Dual Exhaust
--(2) Stage 3 Flows (Exits like the Lightning)
Custom 4x4 Sticker
Viper Alarm
FUTURE MODS:
4.56 gears
Repaint around Headlights where clearcoat is coming off >=(
Possibly a Manik Brush Guard and Roll Bar--we'll see
Thats about it for now!
Killintime4fun@aol.com
"THROUGH the river and OVER the woods to grandmother's house we go."

"...the road curves to the right and there are a lot of signs that say you cannot turn left...TURN LEFT."

 

You can measure it yourself very simply. Lay the wheel down with the back side facing up. Now lay a straightedge across the center of the rim and measure the distance from the straightedge to the surface which mounts against your hub. That measurement is the backspace.

Easy, huh?

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-JonC-
*Silver 2000 4x2 F150 Supercab
*4.6L Triton V8
*BFG 285/75/16 AT KO's
*16 x 8 Panther Custom 108's
*K&N GenII FIPK
*Custom Cat-back w/ Flowmaster 50 Series
*Fabtech 6.5" "Ultimate" suspension lift
*Smittybilt nerf bars
*Extang Black Max soft tonneau
*Stull billet grille
*Clear corners

 

Hey guys,thanks alot.
JonC i knew somebody will answer my question that is why i love f-150 online

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2000 XLT,EXT CAB,BLACK,5.4,AUTO,K&N FIPK,BILLET GRILL,SS MIRRORS,CLEAR CORNERS,BLUE HEAD & REVERSE LIGHTS,DUAL FLOWMASTERS,3.5"TIPS ON FRONT OF REAR RIGHT WHEEL,4-6 DROP,18"KMC CHROME TARANTULAS,WITH 255-45-ZR18"S

 

just pass it along, brother... I've learned much from the people here! This place is a great resource.

 

I will pass it along and that is a promese,
by the way i mesure one of my rims and the backspacing was 5.5",thanks again.

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2000 XLT,EXT CAB,BLACK,5.4,AUTO,K&N FIPK,BILLET GRILL,SS MIRRORS,CLEAR CORNERS,BLUE HEAD & REVERSE LIGHTS,DUAL FLOWMASTERS,3.5"TIPS ON FRONT OF REAR RIGHT WHEEL,4-6 DROP,18"KMC CHROME TARANTULAS,WITH 255-45-ZR18"S

 

GANSO1

Do you have the tires mounted in the rim when taking the measures? If not, then, what JonC told is OK. But if the tires were mounted be sure that you read from the mounting pad to the outside edge of the rim. If not you will get the wrong number.

Be sure that we do not confuse the backspacing with the offset. Backspacing also called rear spacing is the distance from the extreme back edge of rim, not the bead seat, to the mounting pad. Offset is the distance from the wheels' centerline to the plane at which the wheel meets the hub. Positive offset is toward the outside of the rim, negative offset is toward the inside. Zero offset is in the center of the rim. Usually in mm.

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My Ride: 1998 F150 4x4 Lariat Supercab Flareside 5.4L in Oxford White/gold, ORP, Tow Package, 3.55 Gears.

Modifications:
K&N FIPK
Gibson Supertruck Exhaust System
Stepshield door sill protectors
Performance Accesories 3" Body Lift
Superlift 3" lift blocks
Performance Lift Lips
Gabriel Gas Ryder LT VST Shocks
Daystar Front Anti-sway Bar Polyurethane Bushings
Heckethorn Steering Stabilizer
35x12.5R16.5LT BFG All Terrain KO's
16.5x9.75 American Eagle 589's.

Photos at: http://www.communicomgroup.com/jmtruck

 

Yea JMTruck,i measure with the tires mounted but i did went to the edge of the rim,about the negative and positive offset,iknew that one i just didin't know how to come up with the backspacing,but hey we learn somthing different everyday right? thanks man!

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2000 XLT,EXT CAB,BLACK,5.4,AUTO,K&N FIPK,BILLET GRILL,SS MIRRORS,CLEAR CORNERS,BLUE HEAD & REVERSE LIGHTS,DUAL FLOWMASTERS,3.5"TIPS ON FRONT OF REAR RIGHT WHEEL,4-6 DROP STOCK WHEELS 16" WITH MICHELIN PILOTS 235-60-ZR16

 

Ok, that's great. Keep on trucking.