Anyone running a 255/45R20 and 275/45R20 staggered setup? Got pics? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Leviticus · 03-16-2010, 04:24 PM

Hey guys,

Got my Boss 338 wheels ordered and am trying to decide on tires. I got 20x8.5 fronts and 20x10 rears. I am hoping the rears are going to stuff in the well with 6.25 BS, looks like other guys had no issues though. I was looking at 255/40R20 front and 275/40R20 rears but those tire sizes are never stocked and a pain to find.

I am worried the 45 series tires are going to be too tall, but I hate the super low profile look of the 35 series.

Is anyone running a 255/45R20 front and 275/45R20 rear that has pictures? I am stock height in the front and lowered 2" in the rear. I wanted to get the wheels on there and then decide on whether and how much to drop it.

Sorry for another pic request, I searched but only found one truck with 275's all the way around.

Thanks guys.

Leviticus · 03-16-2010, 08:04 PM

bump

72BlckButy · 03-16-2010, 09:16 PM

Most run either a 245/40 matched with a 295/40 or a 255/40 with a 295/40. I'm not sure how difficult it would be locating a matching set of 255/40 w/ a 275/40.

68 c10 ls2 · 03-18-2010, 04:58 PM

I'm running 275 40 r20 on Foose Nitrous wheels 20x10 with a 4 1/2 in bs. with a 6" drop in the rear and there in pleanty of room. Toyo Proxes S/T.

jcblue · 03-18-2010, 06:14 PM

i have 255/45 and 275/45/20 om my truck with boss 338 wheels.. i am pleased.. wish i had gotton 295/45 in the rear b/c the 275 has a small ballon look compared to teh 255 on teh 8.5 wheel in front.. not too noticable though.. O and you will have to run a spacer in the rear, it rubs or it did on mine.. I got a 1 inch spacer. might go 1.25 with 295 tires.. on the fronti had my rotors machined down to fit the 338 wheels and used a 3/8 spacer.. i have prob a 4/6 drop and i dontthink teh 45 series tires are too tall

Ackattack · 03-18-2010, 06:30 PM

I'm running 255/40/20 on the front and 315/35/20 on the rear.

I think 275/45/20 will fit with no problems with that back spacing. My rear wheels (20x10 also) have 5.75" BS and at full dump my tires don't rub the outside of the inner wheel well. With 6.25" BS and a narrower tire, you won't rub on the front. I don't think you'll rub on the back either. I put my wheels and tires on during while I was tubbing it, and they actually fit within the cut out, but it was close, and would probably rub on the inside going around a corner. With your wheel being 1/2" closer to the wheel well the may be a problem too, but then again you're thinking of a narrower tire. There are some pics of this somewhere in my build thread.

Leviticus · 03-18-2010, 07:12 PM

Hey thanks for the replies guys, mounting them up and hoping for the best is my next step

03-16-2010, 04:24 PM	#1
Leviticus Shake and Bake! Join Date: Feb 2010 Location: Central Coast, CA Posts: 609	Anyone running a 255/45R20 and 275/45R20 staggered setup? Got pics? Hey guys, Got my Boss 338 wheels ordered and am trying to decide on tires. I got 20x8.5 fronts and 20x10 rears. I am hoping the rears are going to stuff in the well with 6.25 BS, looks like other guys had no issues though. I was looking at 255/40R20 front and 275/40R20 rears but those tire sizes are never stocked and a pain to find. I am worried the 45 series tires are going to be too tall, but I hate the super low profile look of the 35 series. Is anyone running a 255/45R20 front and 275/45R20 rear that has pictures? I am stock height in the front and lowered 2" in the rear. I wanted to get the wheels on there and then decide on whether and how much to drop it. Sorry for another pic request, I searched but only found one truck with 275's all the way around. Thanks guys. __________________ "All tyranny needs to gain a foothold is for people of good conscience to remain silent." Thomas Jefferson "You are remembered for the rules you break." General Douglas MacArthur "Support Our Troops And The NRA"

03-16-2010, 08:04 PM	#2
Leviticus Shake and Bake! Join Date: Feb 2010 Location: Central Coast, CA Posts: 609	Re: Anyone running a 255/45R20 and 275/45R20 staggered setup? Got pics? bump __________________ "All tyranny needs to gain a foothold is for people of good conscience to remain silent." Thomas Jefferson "You are remembered for the rules you break." General Douglas MacArthur "Support Our Troops And The NRA"

03-16-2010, 09:16 PM	#3
72BlckButy Tot Roddin' Join Date: Apr 2005 Location: Mid-MO Posts: 24,461	Re: Anyone running a 255/45R20 and 275/45R20 staggered setup? Got pics? Most run either a 245/40 matched with a 295/40 or a 255/40 with a 295/40. I'm not sure how difficult it would be locating a matching set of 255/40 w/ a 275/40. __________________ -Nate 1969 CST SWB - Project Blank Slate (4.5/6" ECE Static Drop, 6-lug disc brake upgrade (manual), Billet Specialties Vintec 20x8.5 255/40 (F) 20x10 295/40 (R), 250 I-6) 1960 AMF Skylark - Tot Roddin' (Lowered with custom frame; soon to include custom push bar and interior) 2008 Silverado CrewCab 1LT (5.3L, 3:73, 4x4, LT1, Z-71, Towing Package)

03-18-2010, 04:58 PM	#4
68 c10 ls2 Registered User Join Date: Mar 2010 Location: Minnesota Posts: 157	Re: Anyone running a 255/45R20 and 275/45R20 staggered setup? Got pics? I'm running 275 40 r20 on Foose Nitrous wheels 20x10 with a 4 1/2 in bs. with a 6" drop in the rear and there in pleanty of room. Toyo Proxes S/T.

03-18-2010, 06:14 PM	#5
jcblue Registered User Join Date: Aug 2007 Location: Elkton, ky Posts: 385	Re: Anyone running a 255/45R20 and 275/45R20 staggered setup? Got pics? i have 255/45 and 275/45/20 om my truck with boss 338 wheels.. i am pleased.. wish i had gotton 295/45 in the rear b/c the 275 has a small ballon look compared to teh 255 on teh 8.5 wheel in front.. not too noticable though.. O and you will have to run a spacer in the rear, it rubs or it did on mine.. I got a 1 inch spacer. might go 1.25 with 295 tires.. on the fronti had my rotors machined down to fit the 338 wheels and used a 3/8 spacer.. i have prob a 4/6 drop and i dontthink teh 45 series tires are too tall

03-18-2010, 06:30 PM	#6
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,525	Re: Anyone running a 255/45R20 and 275/45R20 staggered setup? Got pics? I'm running 255/40/20 on the front and 315/35/20 on the rear. I think 275/45/20 will fit with no problems with that back spacing. My rear wheels (20x10 also) have 5.75" BS and at full dump my tires don't rub the outside of the inner wheel well. With 6.25" BS and a narrower tire, you won't rub on the front. I don't think you'll rub on the back either. I put my wheels and tires on during while I was tubbing it, and they actually fit within the cut out, but it was close, and would probably rub on the inside going around a corner. With your wheel being 1/2" closer to the wheel well the may be a problem too, but then again you're thinking of a narrower tire. There are some pics of this somewhere in my build thread. __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

03-18-2010, 07:12 PM	#7
Leviticus Shake and Bake! Join Date: Feb 2010 Location: Central Coast, CA Posts: 609	Re: Anyone running a 255/45R20 and 275/45R20 staggered setup? Got pics? Hey thanks for the replies guys, mounting them up and hoping for the best is my next step __________________ "All tyranny needs to gain a foothold is for people of good conscience to remain silent." Thomas Jefferson "You are remembered for the rules you break." General Douglas MacArthur "Support Our Troops And The NRA"



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