4.5/6 Drop, Tire size rollin on 20's - Page 3 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

shopking72 · 03-01-2013, 08:32 AM

My truck with 255/40/18 and 295/35/20 with Nittos.

HotRod C/10 · 03-01-2013, 08:58 PM

Quote:

Originally Posted by 67anthony

4-6 drop 255/40 295 /40

what does your rear wheel opening measure in height from the ground to the center of the arch 29 1/2"-30"?

67anthony · 03-01-2013, 10:55 PM

[QUOTE=HotRod C/10;5921396]what does your rear wheel opening measure in height from the ground to the center of the arch 29 1/2"-30"?[/QUO i will ck for you will be sunday

magwakeenercew2jh · 03-01-2013, 11:16 PM

4.5/5 Drop w 2.5 spindles and 2" springs in front....5" spring drop in rear.

Wheels are 20 x 8.5 and 20 x 10 Boss' (don't know the BS...they were the only ones they made at the time). 1.5" spacer in the back and 1" spacer in the front.

Tires are 245/40 in front and 275/45's in the rear.

I would have liked more back spacing and a little more tire on the rear.
But I'm running with these now.

Gmcfolife · 03-17-2013, 09:42 PM

Quote:

Originally Posted by original-71

i need new pics of my truck but heres one. E.C.E 4-1/2 and 6 drop kit with a 1/2 block also in the rear. You can do 6-1/2 in the rear with no c-notch.

What is the back spacing on your wheels?
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buckskins4ever · 03-17-2013, 10:20 PM

you running a fleet side so you can do the 295/40 and 255/40. With my stepper I had to stop at 275/40 for rear. Its the widest the rear wells would take and still drop over the tire.

Gmcfolife · 03-17-2013, 10:27 PM

Quote:

Originally Posted by buckskins4ever

you running a fleet side so you can do the 295/40 and 255/40. With my stepper I had to stop at 275/40 for rear. Its the widest the rear wells would take and still drop over the tire.

What kind of back spacing fits?
Posted via Mobile Device

buckskins4ever · 03-17-2013, 10:36 PM

Quote:

Originally Posted by Gmcfolife

What kind of back spacing fits?
Posted via Mobile Device

I am running a set of ridler 695 20x8.5 and 20x10, thisnk 10's are a 5.25 BS I know its a ) offset for their wheel think fronts equate to a 4.75 BS still ) offset.

HotRod C/10 · 03-17-2013, 11:28 PM

Quote:

Originally Posted by Gmcfolife

What kind of back spacing fits?
Posted via Mobile Device

your rear axle width will play a role on Backspacing as well....there were two different widths

Gmcfolife · 03-17-2013, 11:38 PM

I have a 68 1/2 ton gmc with a stock 6 lug rear end. I'm looking to get centerline smoothie wheels. The only 20" wheels they carry are a 20x8.5 with a 5.4 rear back spacing. What do you guys think? Will these work for the front and rear? I would like wider in the rear but rather stay with a 20" and not a 22"
Posted via Mobile Device

indasevens · 04-11-2013, 09:46 PM

Quote:

Originally Posted by magwakeenercew2jh

4.5/5 Drop w 2.5 spindles and 2" springs in front....5" spring drop in rear.

Wheels are 20 x 8.5 and 20 x 10 Boss' (don't know the BS...they were the only ones they made at the time). 1.5" spacer in the back and 1" spacer in the front.

Tires are 245/40 in front and 275/45's in the rear.

I would have liked more back spacing and a little more tire on the rear.
But I'm running with these now.

What size tire can you fit on the back?????? 295/40/20...?

BugzC10 · 06-14-2013, 07:49 PM

Quote:

Originally Posted by buckskins4ever

you running a fleet side so you can do the 295/40 and 255/40. With my stepper I had to stop at 275/40 for rear. Its the widest the rear wells would take and still drop over the tire.

Buckskins.....are you setting 4.5/6 in this picture? The picture in your profile looks more like it or is it lower? I'm considering 20s for my stepper and researching what will fit.

EDIT....never mind, saw another post where you said the bags were aired up in this picture.

ffk · 11-23-2013, 02:55 PM

markiemark · 11-23-2013, 03:38 PM

Im hearing 245/45 & 295/40/20 because they are both almost the same size. something like 29" and 28.9". correct me if I'm wrong. I'm looking for a set of rims and tires also

Pro Performance · 11-23-2013, 03:50 PM

It all depends on personal preference, but I recommend the Nitto 420s, which have a 245/45/20 and 285/40/20. They come in at about 28.6 front and 28.9 in the rear.

The 295/40/20 you mentioned will work as well, as the height is basically the same. Each tire model will have different sizes.

RaceAGMC · 11-23-2013, 04:43 PM

I'm running a 4.5/7 with 255/40/20 and 295/40/20. I wish I would have went a lil shorter all the way around, but these will work for now.

**WIDESIDE72** · 11-23-2013, 04:46 PM

I am considering a set of used 20" MB Bruzer wheels with Goodyear Eagle GT II tires. P275/45/R20 tires. I prefer some torq thrusts coys or similar but i can fet these cheap! I am waiting to hear back on rim width an backspacing. Any input?

**WIDESIDE72** · 11-23-2013, 04:48 PM

I forgot to add they would be going on a 72 swb stepside with a 3/4 static drop

Pro Performance · 11-23-2013, 04:51 PM

Great looking truck RaceAGMC.

WIDESIDE72, a 20x8.5 w/ 5.25" BS, and a 20x10 w/ 5.5" BS would work well, but all depends on width of the wheel. Of course, anything close in this that area of backspace should work fine for you on a 3/4 drop.

03-01-2013, 08:32 AM	#51
shopking72 Registered User Join Date: Sep 2005 Location: Kansas Posts: 774	Re: 4.5/6 Drop, Tire size rollin on 20's My truck with 255/40/18 and 295/35/20 with Nittos. __________________ 1972 C10 LWB- 4.5 Front and 5 Rear Drop, 406/TH350 1966 Caprice 1968 Impala (Frame Off LSX Project) 2001 Tahoe LT 2013 Hyundai Elantra 2010 Kawasaki Z1000

03-01-2013, 10:55 PM	#53
67anthony Registered User Join Date: Jun 2011 Location: mississippi Posts: 444	Re: 4.5/6 Drop, Tire size rollin on 20's [QUOTE=HotRod C/10;5921396]what does your rear wheel opening measure in height from the ground to the center of the arch 29 1/2"-30"?[/QUO i will ck for you will be sunday

03-01-2013, 11:16 PM	#54
magwakeenercew2jh RAT1968 '68 Cab/'71 Parts Join Date: Feb 2002 Location: Coarsegold, CA Posts: 2,375	Re: 4.5/6 Drop, Tire size rollin on 20's 4.5/5 Drop w 2.5 spindles and 2" springs in front....5" spring drop in rear. Wheels are 20 x 8.5 and 20 x 10 Boss' (don't know the BS...they were the only ones they made at the time). 1.5" spacer in the back and 1" spacer in the front. Tires are 245/40 in front and 275/45's in the rear. I would have liked more back spacing and a little more tire on the rear. But I'm running with these now. Attached Images __________________ M17 Coarsegold, CA RAT's shiny now. But always a rat.

03-17-2013, 10:20 PM	#56
buckskins4ever Registered User Join Date: Dec 2012 Location: Altoona Iowa Posts: 481	Re: 4.5/6 Drop, Tire size rollin on 20's you running a fleet side so you can do the 295/40 and 255/40. With my stepper I had to stop at 275/40 for rear. Its the widest the rear wells would take and still drop over the tire. Attached Images

03-17-2013, 11:38 PM	#60
Gmcfolife Registered User Join Date: Dec 2012 Location: Santee,CA Posts: 182	Re: 4.5/6 Drop, Tire size rollin on 20's I have a 68 1/2 ton gmc with a stock 6 lug rear end. I'm looking to get centerline smoothie wheels. The only 20" wheels they carry are a 20x8.5 with a 5.4 rear back spacing. What do you guys think? Will these work for the front and rear? I would like wider in the rear but rather stay with a 20" and not a 22" Posted via Mobile Device

11-23-2013, 02:55 PM	#63
ffk Registered User Join Date: Oct 2010 Location: lowell, in Posts: 271	Re: 4.5/6 Drop, Tire size rollin on 20's __________________ my build thread -- (http://67-72chevytrucks.com/vboard/s...d.php?t=438604)

11-23-2013, 03:38 PM	#64
markiemark Registered User Join Date: Nov 2013 Location: NYC Posts: 164	Re: 4.5/6 Drop, Tire size rollin on 20's Im hearing 245/45 & 295/40/20 because they are both almost the same size. something like 29" and 28.9". correct me if I'm wrong. I'm looking for a set of rims and tires also

11-23-2013, 03:50 PM	#65
Pro Performance Registered User Join Date: Aug 2010 Location: AZ Posts: 3,069	Re: 4.5/6 Drop, Tire size rollin on 20's It all depends on personal preference, but I recommend the Nitto 420s, which have a 245/45/20 and 285/40/20. They come in at about 28.6 front and 28.9 in the rear. The 295/40/20 you mentioned will work as well, as the height is basically the same. Each tire model will have different sizes.

11-23-2013, 04:43 PM	#66
RaceAGMC Registered User Join Date: Jul 2007 Location: Charlotte, NC Posts: 350	Re: 4.5/6 Drop, Tire size rollin on 20's I'm running a 4.5/7 with 255/40/20 and 295/40/20. I wish I would have went a lil shorter all the way around, but these will work for now. Attached Images __________________ 70 CST, 6.0/ 4L80E in the works. Custom harness by 68 Short Step

11-23-2013, 04:46 PM	#67
WIDESIDE72 Senior Member Join Date: Aug 2008 Location: Cedar Park, Texas Posts: 7,494	Re: 4.5/6 Drop, Tire size rollin on 20's I am considering a set of used 20" MB Bruzer wheels with Goodyear Eagle GT II tires. P275/45/R20 tires. I prefer some torq thrusts coys or similar but i can fet these cheap! I am waiting to hear back on rim width an backspacing. Any input?

11-23-2013, 04:48 PM	#68
WIDESIDE72 Senior Member Join Date: Aug 2008 Location: Cedar Park, Texas Posts: 7,494	Re: 4.5/6 Drop, Tire size rollin on 20's I forgot to add they would be going on a 72 swb stepside with a 3/4 static drop

11-23-2013, 04:51 PM	#69
Pro Performance Registered User Join Date: Aug 2010 Location: AZ Posts: 3,069	Re: 4.5/6 Drop, Tire size rollin on 20's Great looking truck RaceAGMC. WIDESIDE72, a 20x8.5 w/ 5.25" BS, and a 20x10 w/ 5.5" BS would work well, but all depends on width of the wheel. Of course, anything close in this that area of backspace should work fine for you on a 3/4 drop.



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