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#1 |
Registered User
Join Date: Dec 2006
Location: Arizona
Posts: 23
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Back Space on Rim Spec's
Hey list, I've been reading almost every thread I can on rims and wheel size but my question that I don't understand is what do you mean by back space. For example (The rears are 17x9.5 with 4.75" of backspace with a 275/50. Up front is 17x8 with 4" of backspace and a 255/50). Can you please explain?
JD |
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#2 | |
Registered User
Join Date: Sep 2006
Location: Houston, Texas
Posts: 190
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Re: Back Space on Rim Spec's
Quote:
The more backspace, the more inward (toward motor) the entire rim goes. The less backspace, the more outward the rim sits. These numbers become important when choosing wheels/tires in order for them not to either interfere with inner fender well, disc/drum brakes, and other suspension parts. I hope this helps and if anyone has a better way of explaining, feel free to add/clarify. Jesse
__________________
1985 SWB Silverado 1/2 Ton 1972 Chevy SWB 1/2 Ton (sold) 1972 Chevy Chevelle SS (sold) 1971 Chevy Nova (sold) 1967 Chevy El Camino (sold) 2001 Mustang Bullitt (sold) 2019 Toyota Tundra Crewmax (daily) |
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#3 |
Registered User
Join Date: Sep 2006
Location: Houston, Texas
Posts: 190
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Re: Back Space on Rim Spec's
__________________
1985 SWB Silverado 1/2 Ton 1972 Chevy SWB 1/2 Ton (sold) 1972 Chevy Chevelle SS (sold) 1971 Chevy Nova (sold) 1967 Chevy El Camino (sold) 2001 Mustang Bullitt (sold) 2019 Toyota Tundra Crewmax (daily) |
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#4 |
Registered User
Join Date: Dec 2006
Location: Arizona
Posts: 23
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Re: Back Space on Rim Spec's
The reason I ask is beacuse I plan on purchasing some 20'' rims that are 8.5 and 5" backspace. What do you guys think? This is the only size availible in this rim and I just love them. But before I purchase I want to get you Pro's opinion. They'll be going on a 1970 C10 with a 4/6 drop. Please help.
JD |
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#5 |
Active Member
![]() Join Date: May 2005
Location: San Jose, CA
Posts: 235
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Re: Back Space on Rim Spec's
Measure, measure and measure again before buying. Find out the REAL size of the tires you want (Not advertised, find out the width at the bulge of the tire, which will change depending on the width of the wheel)
I am actually about to double check my measurements for the wheels I am going to order, just to make sure!! J |
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#6 | |
Registered User
Join Date: Sep 2006
Location: Houston, Texas
Posts: 190
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Re: Back Space on Rim Spec's
Quote:
Just so happens you are asking the right guy. I have 20x8.5 with 5 inch BS on front and 20x10 with 5.5 inch BS on rear on my 72 C10. I'm certain they will fit just fine. And I have a 4.5/5 inch drop. Jesse
__________________
1985 SWB Silverado 1/2 Ton 1972 Chevy SWB 1/2 Ton (sold) 1972 Chevy Chevelle SS (sold) 1971 Chevy Nova (sold) 1967 Chevy El Camino (sold) 2001 Mustang Bullitt (sold) 2019 Toyota Tundra Crewmax (daily) |
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#7 |
Registered User
Join Date: Dec 2006
Location: Arizona
Posts: 23
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Re: Back Space on Rim Spec's
Hey NovaJess1972, what size tire do you have and what size tire do you thing I should use with the 20" X8.5, 5'' backspacing? I'm trying to go for the level look.
Thanks JD Last edited by Truword1; 12-15-2006 at 08:15 PM. |
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#8 | |
Registered User
Join Date: Sep 2006
Location: Houston, Texas
Posts: 190
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Re: Back Space on Rim Spec's
Quote:
If it were me, and I was running the same wheel on all corners, I would run the 255/40-20 or 255/45-20 in front and a 275/45-20 in rear. Eventhough these tires are all different sizes, they are all recommended to fit a rim with a width of 8.5-10 inches. Also it will appear that you have a bit wider wheel in the rear than the front. Jesse
__________________
1985 SWB Silverado 1/2 Ton 1972 Chevy SWB 1/2 Ton (sold) 1972 Chevy Chevelle SS (sold) 1971 Chevy Nova (sold) 1967 Chevy El Camino (sold) 2001 Mustang Bullitt (sold) 2019 Toyota Tundra Crewmax (daily) |
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