Rally wheel back spacing? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jwn1975 · 05-29-2008, 03:43 AM

Can someone tell me what rally wheels I have? They are 15" five lug 2wd truck rallys. I need to know what width they are and the back spacing. I measured the BS and looks to me 3.75" or 4". Can someone tell me the right width and back spacing? I dont want to dismount the tire.

Thanks in advance

**lolife99** · 05-29-2008, 04:12 AM

Three different widths. 6.5" (van ralleys), 7" and 8". The 7" have 3 5/8" BS. The 6.5" and 8" have 4" BS.

jwn1975 · 05-29-2008, 05:07 AM

Thanks

jwn1975 · 05-29-2008, 05:29 AM

Are you measuring from the lip on the inside between the lug holes to the very inner edge? I',m getting just a smidge under 4"
Thanks

**lolife99** · 05-29-2008, 05:36 AM

Lay a straight edge across the back of the wheel. Measure down to the contact point of the wheel center. Backspacing is from the mounting flange of the wheel to the most inside edge. Makes sense. This is the measurement you want for wheel clearance.

jwn1975 · 05-29-2008, 10:12 AM

Gotcha, mounting face or flange to the inner most edge of the wheel.
Thanks I knew i was close.

05-29-2008, 03:43 AM	#1
jwn1975 Registered User Join Date: Jan 2008 Location: Red Lodge Montana Posts: 240	Rally wheel back spacing? Can someone tell me what rally wheels I have? They are 15" five lug 2wd truck rallys. I need to know what width they are and the back spacing. I measured the BS and looks to me 3.75" or 4". Can someone tell me the right width and back spacing? I dont want to dismount the tire. Thanks in advance

05-29-2008, 04:12 AM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,692	Re: Rally wheel back spacing? Three different widths. 6.5" (van ralleys), 7" and 8". The 7" have 3 5/8" BS. The 6.5" and 8" have 4" BS. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

05-29-2008, 05:07 AM	#3
jwn1975 Registered User Join Date: Jan 2008 Location: Red Lodge Montana Posts: 240	Re: Rally wheel back spacing? Thanks

05-29-2008, 05:29 AM	#4
jwn1975 Registered User Join Date: Jan 2008 Location: Red Lodge Montana Posts: 240	Re: Rally wheel back spacing? Are you measuring from the lip on the inside between the lug holes to the very inner edge? I',m getting just a smidge under 4" Thanks

05-29-2008, 05:36 AM	#5
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,692	Re: Rally wheel back spacing? Lay a straight edge across the back of the wheel. Measure down to the contact point of the wheel center. Backspacing is from the mounting flange of the wheel to the most inside edge. Makes sense. This is the measurement you want for wheel clearance. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 05-29-2008 at 05:36 AM.

05-29-2008, 10:12 AM	#6
jwn1975 Registered User Join Date: Jan 2008 Location: Red Lodge Montana Posts: 240	Re: Rally wheel back spacing? Gotcha, mounting face or flange to the inner most edge of the wheel. Thanks I knew i was close.



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