wheel and tire size? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

GreenMystChevy · 07-22-2003, 01:19 PM

I know it has been asked but of course with the search feature down and me not bookmarking some threads here and there, I must ask again.

I am building up a '72 GMC 4x4 with an 8" suspension lift and a 2" body lift. It will be my daily driver (I know it will be a gas hog) but yet I will be taking her for some off road fun on the weekends.
I am looking at getting BFG Mud Terrain tires and not sure on the wheels yet, Maybe some MT's.

My question is, what wheel size and backspace do I need for my rims so that I can tuck as much without sticking out real far to attract the cops and what tire size should I run? I was thining 38's or 40's.

Thanks guys

**JIMs70GMC** · 07-23-2003, 06:09 AM

BFGs don't come that big. I think the biggest is 37". You could run 38x12.5/15 TSLs on an 8" wide rim w/ 4" backspacing. If you go to a 10" wide rim the tires will stick out past the fenders in the front. Check out the pics in the link in my sig.

blazerboy72 · 07-23-2003, 10:21 AM

you could easily use a 40". my 38.5's are on 10 inch wheels and they dont stick out to far maybe an inch or two. Good luck on the daily driver. i tried it for a little whil but decided i liked getting miles per gallons instead of gallons per mile.

GreenMystChevy · 07-23-2003, 11:32 AM

Thanks guys, that sucks about the BFG's, I really liked 'em.

I am now trying to decide what backspace (probably 4") and what height of tire to get being that I want the look of 40's yet the little bit less weight of 37's and 38's.

I'll probably just go 12.5" wide instead of the better looking 14.5 or so to save me some gas, power, and time (not having to deal with the police)

07-22-2003, 01:19 PM	#1
GreenMystChevy Registered User Join Date: Jan 2002 Location: Woodinville, WA Posts: 513	wheel and tire size? I know it has been asked but of course with the search feature down and me not bookmarking some threads here and there, I must ask again. I am building up a '72 GMC 4x4 with an 8" suspension lift and a 2" body lift. It will be my daily driver (I know it will be a gas hog) but yet I will be taking her for some off road fun on the weekends. I am looking at getting BFG Mud Terrain tires and not sure on the wheels yet, Maybe some MT's. My question is, what wheel size and backspace do I need for my rims so that I can tuck as much without sticking out real far to attract the cops and what tire size should I run? I was thining 38's or 40's. Thanks guys __________________ Jeremy '71 C-10 '72 GMC K2500 '72 Nova (Dad's) '70 Chevelle SS '55 Sedan Delivery Attempting to build up this here 4x4...make her real tall and purty...well, maybe just tall

07-23-2003, 06:09 AM	#2
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	BFGs don't come that big. I think the biggest is 37". You could run 38x12.5/15 TSLs on an 8" wide rim w/ 4" backspacing. If you go to a 10" wide rim the tires will stick out past the fenders in the front. Check out the pics in the link in my sig. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

07-23-2003, 11:32 AM	#4
GreenMystChevy Registered User Join Date: Jan 2002 Location: Woodinville, WA Posts: 513	Thanks guys, that sucks about the BFG's, I really liked 'em. I am now trying to decide what backspace (probably 4") and what height of tire to get being that I want the look of 40's yet the little bit less weight of 37's and 38's. I'll probably just go 12.5" wide instead of the better looking 14.5 or so to save me some gas, power, and time (not having to deal with the police) __________________ Jeremy '71 C-10 '72 GMC K2500 '72 Nova (Dad's) '70 Chevelle SS '55 Sedan Delivery Attempting to build up this here 4x4...make her real tall and purty...well, maybe just tall

07-23-2003, 10:21 AM	#3
blazerboy72 Senior Member Join Date: Mar 2002 Location: Temple, Ga Posts: 854	you could easily use a 40". my 38.5's are on 10 inch wheels and they dont stick out to far maybe an inch or two. Good luck on the daily driver. i tried it for a little whil but decided i liked getting miles per gallons instead of gallons per mile.



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