17x8 with 4.5" backspacing fit 72? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dropt72Shortbed · 05-08-2003, 04:32 PM

im gonna buy a temporary sent of 17s until i can spend the dough on 20s. ive got a good deal on the rims and i already have a set of 17" tires i can use.

the rims are 17x8 all around, 4.5" backspacing, is this the correct backspacing for our trucks? its a 1/2 ton 72.

billogna · 05-08-2003, 05:35 PM

I've got a '71 front end with 17x8s and '72 rear with 17x9s, both with 4.5" bs. I ground a little bit off of my bottom a-arms, though, can't remember why now, maybe rubbed when turning. The look of the offset is perfect IMO.

XXL · 05-08-2003, 08:07 PM

Quote:

Originally posted by Dropt72Shortbed
the rims are 17x8 all around, 4.5" backspacing, is this the correct backspacing for our trucks? its a 1/2 ton 72.

It depends on how dropped you are. They will work unless you're tucking tire or more... then you'll need to go with 5" bs or the fender will eat tires.

Kenneth

72chevyLWB · 05-08-2003, 11:03 PM

You can't go with more than a 4.5" bs in the back cuz you'll rub. What kind of 20's you looking for? I can get you an awesome hook up on Eagle Alloys.

brad2 · 05-08-2003, 11:16 PM

I put a 20x9.5 with 5 inch back spaceing and a 295/40/20 on the back of mine and it didn't rub.

XXL · 05-08-2003, 11:31 PM

Quote:

Originally posted by 72chevyLWB
You can't go with more than a 4.5" bs in the back cuz you'll rub. What kind of 20's you looking for? I can get you an awesome hook up on Eagle Alloys.

I'm using 5" bs on mine and no rubbing.

Glen · 05-08-2003, 11:59 PM

I just ordered two 17x8 4.5"bs AR Torque Thrust II's and 20x10's for the rear. The truck is already bagged, the rear will get a bridge as soon as the wheels arrive to keep it level and tuck the 20 up high in the bed.

This pic was taken about a week ago when I was sizing up the front wheels, this is a 17x8 with 4" backspacing, the tire was a 245-45-17, the tire went up in and my crossmember hit the same time my tire rubbed the fender. So I ordered my 17's in a 4.5" bs.

Glen · 05-09-2003, 12:13 AM

Here is that pic

grnddwn · 05-09-2003, 12:20 AM

I changed mine to a 4.25 bs this year but I ran 4.5 on my last to sets of rims

Dropt72Shortbed · 05-09-2003, 02:27 AM

ok i got two contradicting answers here

XXL your saying 4.5" wont tuck (yes my truck is going to be bagged, so i cant have it rubbing on the fenders)

Glen you're saying 4.5" works fine on a 17x8 with 245/45/17?

anyone else got any info?

i plan on buying a temporary set of 17s and need to know soon.

XXL · 05-09-2003, 07:59 AM

Quote:

Originally posted by Dropt72Shortbed
ok i got two contradicting answers here

XXL your saying 4.5" wont tuck (yes my truck is going to be bagged, so i cant have it rubbing on the fenders)

Glen you're saying 4.5" works fine on a 17x8 with 245/45/17?

anyone else got any info?

i plan on buying a temporary set of 17s and need to know soon.

Yep. I'm running 17x8 x5" bs and a 255/50/17 tire. I started with 4.5" bs wheels and they rubbed (just in the test fit... I wasn't even driving, which I suspect would be worse). I then went with 5.5" bs, but the rears rubbed (stepside bed)... so I went back to 5" and a 5/16" spacer on the rear. I've been running this setup for 3 1/2 years now and don't rub either up or dumped.

Kenneth

Dropt72Shortbed · 05-09-2003, 03:46 PM

bump

grnddwn · 05-09-2003, 08:23 PM

when I had the 4.5 bs they tucked like a mofo. bagged out it looked like I hah no wheels from the back

Glen · 05-10-2003, 12:50 AM

Sorry for the late reply......I just got in from work, please dont take my measurements as the rule. Iam just getting started on my 68 project and these other guys have been around this stuff much longer than I have been.

05-08-2003, 04:32 PM	#1
Dropt72Shortbed Registered User Join Date: May 2002 Location: Huntington Beach CA Posts: 678	17x8 with 4.5" backspacing fit 72? im gonna buy a temporary sent of 17s until i can spend the dough on 20s. ive got a good deal on the rims and i already have a set of 17" tires i can use. the rims are 17x8 all around, 4.5" backspacing, is this the correct backspacing for our trucks? its a 1/2 ton 72.

05-08-2003, 05:35 PM	#2
billogna Registered User Join Date: Apr 2002 Location: Choctaw, OK Posts: 235	I've got a '71 front end with 17x8s and '72 rear with 17x9s, both with 4.5" bs. I ground a little bit off of my bottom a-arms, though, can't remember why now, maybe rubbed when turning. The look of the offset is perfect IMO. __________________ '69 Chev Cust/10 swb, 350/700R4, 5"/6" '70 Chev C10 swb, 67 front, 454/700r4, 4"/5" '73 Chev stepper, 350/3 spd '84 Chev K20 350/4 spd '91 GMC 1500 Suburban 4x4, 350/700R4

05-08-2003, 11:03 PM	#4
72chevyLWB Got 20's???? Join Date: Oct 2001 Location: Aberdeen SD Posts: 1,451	You can't go with more than a 4.5" bs in the back cuz you'll rub. What kind of 20's you looking for? I can get you an awesome hook up on Eagle Alloys. Attached Images __________________ 99 Silverado Ex-Cab 2wd, Bagged&WhippleCharged 02 Sierra Ex-Cab 4wd 2500 HD The 72 went down the road.

05-08-2003, 11:16 PM	#5
brad2 Registered User Join Date: Feb 2001 Location: edmond, ok Posts: 1,056	I put a 20x9.5 with 5 inch back spaceing and a 295/40/20 on the back of mine and it didn't rub. __________________ 74 swb 71 2wd Jimmy 82 2wd Blazer

05-08-2003, 11:59 PM	#7
Glen Registered User Join Date: Jan 2003 Location: Chandler, AZ Posts: 189	I just ordered two 17x8 4.5"bs AR Torque Thrust II's and 20x10's for the rear. The truck is already bagged, the rear will get a bridge as soon as the wheels arrive to keep it level and tuck the 20 up high in the bed. This pic was taken about a week ago when I was sizing up the front wheels, this is a 17x8 with 4" backspacing, the tire was a 245-45-17, the tire went up in and my crossmember hit the same time my tire rubbed the fender. So I ordered my 17's in a 4.5" bs. Last edited by Glen; 05-09-2003 at 12:13 AM.

05-09-2003, 12:13 AM	#8
Glen Registered User Join Date: Jan 2003 Location: Chandler, AZ Posts: 189	Here is that pic Attached Images

05-09-2003, 12:20 AM	#9
grnddwn belly dragger Join Date: Feb 2002 Location: sherwood park AB. Canada Posts: 694	I changed mine to a 4.25 bs this year but I ran 4.5 on my last to sets of rims

05-09-2003, 02:27 AM	#10
Dropt72Shortbed Registered User Join Date: May 2002 Location: Huntington Beach CA Posts: 678	ok i got two contradicting answers here XXL your saying 4.5" wont tuck (yes my truck is going to be bagged, so i cant have it rubbing on the fenders) Glen you're saying 4.5" works fine on a 17x8 with 245/45/17? anyone else got any info? i plan on buying a temporary set of 17s and need to know soon.

05-09-2003, 03:46 PM	#12
Dropt72Shortbed Registered User Join Date: May 2002 Location: Huntington Beach CA Posts: 678	bump

05-09-2003, 08:23 PM	#13
grnddwn belly dragger Join Date: Feb 2002 Location: sherwood park AB. Canada Posts: 694	when I had the 4.5 bs they tucked like a mofo. bagged out it looked like I hah no wheels from the back

05-10-2003, 12:50 AM	#14
Glen Registered User Join Date: Jan 2003 Location: Chandler, AZ Posts: 189	Sorry for the late reply......I just got in from work, please dont take my measurements as the rule. Iam just getting started on my 68 project and these other guys have been around this stuff much longer than I have been.

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