Tire size on a dropped truck? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Joe67 · 06-09-2003, 11:09 AM

I am looking at the 3/5 spring drop setup from cpp
I have a stock 67 SWB 2wd pickup with stock 15" steel reversed wheels.

Is there a way to calculate what tire size is best for the setup I am looking at?

GMC JUNKIE TOO · 06-09-2003, 12:15 PM

Heres a link that may help you.
http://www.earlyclassic.com/catalogpg6.html

Joe67 · 06-09-2003, 12:23 PM

Quote:

Originally posted by GMC JUNKIE TOO
Heres a link that may help you.
http://www.earlyclassic.com/catalogpg6.html

Good info, thanks

You know, I have seen that page in reference to the different drop profiiles, but never noticed the tire sizes

Slammed67 · 06-09-2003, 01:21 PM

I'd say drop the truck first, then see how it looks. You might end up liking the way the existing tires fit. You'll at least be able to get a better idea of what you want. Just my $0.02.

72chevyLWB · 06-09-2003, 10:09 PM

27" tall tire is PERFECT of a 3/5 drop. Thats what I ran last year 17" though and it was very nice.

ChevLoRay · 06-11-2003, 04:45 PM

I have ECE 2.5-inch drop spindles on the front of my '69 SWB C-10, and their 4-inch drop springs on the rear. I'm running 255-70R15's on the rear, and 235-60R15's on the front. 60's are too short, for my opinion....leaves too much room in the wheel opening. I'd like to have 275-15's in the rear and 225-75s in the front, with another inch taken from the elevation, via springs. But, then I'd like to take another inch or two, out of the rear. When will it ever end??

Joe67 · 06-18-2003, 08:04 AM

I have 255/70 R15s all the way around on my 67. Looks like I can drop it first then check the gap to determine a new tire size.

Thanks for the input

454ss_2 · 06-18-2003, 12:54 PM

Quote:

Originally posted by 67c10step
I have 255/70 R15s all the way around on my 67. Looks like I can drop it first then check the gap to determine a new tire size.

Thanks for the input

Drop it already

Joe67 · 06-18-2003, 02:23 PM

Quote:

Originally posted by 454ss_2
Drop it already

I will in July

Joe67 · 06-18-2003, 02:48 PM

When you do a 3/5 or 4/6 drop on these trucks, does it affect the drive shaft angle at all?

crazy4chevs · 06-19-2003, 04:17 PM

It will alittle but you can shim it and correct it really easy.

06-09-2003, 11:09 AM	#1
Joe67 67 is sold Join Date: Apr 2001 Location: Troy, Michigan Posts: 6,733	Tire size on a dropped truck? I am looking at the 3/5 spring drop setup from cpp I have a stock 67 SWB 2wd pickup with stock 15" steel reversed wheels. Is there a way to calculate what tire size is best for the setup I am looking at? __________________ Joe - Formerly 67c10step ------------------------------- 1967 Chevy Stepside - ECE 4/6, fuelcell, 5lug - SOLD gr8lakes - My ebay auctions Click here to order forum apparel :: Click here to become a subscribing member

06-09-2003, 01:21 PM	#4
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	I'd say drop the truck first, then see how it looks. You might end up liking the way the existing tires fit. You'll at least be able to get a better idea of what you want. Just my $0.02. __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

06-09-2003, 10:09 PM	#5
72chevyLWB Got 20's???? Join Date: Oct 2001 Location: Aberdeen SD Posts: 1,451	27" tall tire is PERFECT of a 3/5 drop. Thats what I ran last year 17" though and it was very nice. __________________ 99 Silverado Ex-Cab 2wd, Bagged&WhippleCharged 02 Sierra Ex-Cab 4wd 2500 HD The 72 went down the road.

06-11-2003, 04:45 PM	#6
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	I have ECE 2.5-inch drop spindles on the front of my '69 SWB C-10, and their 4-inch drop springs on the rear. I'm running 255-70R15's on the rear, and 235-60R15's on the front. 60's are too short, for my opinion....leaves too much room in the wheel opening. I'd like to have 275-15's in the rear and 225-75s in the front, with another inch taken from the elevation, via springs. But, then I'd like to take another inch or two, out of the rear. When will it ever end?? __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

06-18-2003, 08:04 AM	#7
Joe67 67 is sold Join Date: Apr 2001 Location: Troy, Michigan Posts: 6,733	I have 255/70 R15s all the way around on my 67. Looks like I can drop it first then check the gap to determine a new tire size. Thanks for the input __________________ Joe - Formerly 67c10step ------------------------------- 1967 Chevy Stepside - ECE 4/6, fuelcell, 5lug - SOLD gr8lakes - My ebay auctions Click here to order forum apparel :: Click here to become a subscribing member

06-09-2003, 12:15 PM	#2
GMC JUNKIE TOO THE QUICKER FIXERUPER Join Date: Jul 2002 Location: Ok Posts: 615	Heres a link that may help you. http://www.earlyclassic.com/catalogpg6.html

06-18-2003, 02:48 PM	#10
Joe67 67 is sold Join Date: Apr 2001 Location: Troy, Michigan Posts: 6,733	When you do a 3/5 or 4/6 drop on these trucks, does it affect the drive shaft angle at all? __________________ Joe - Formerly 67c10step ------------------------------- 1967 Chevy Stepside - ECE 4/6, fuelcell, 5lug - SOLD gr8lakes - My ebay auctions Click here to order forum apparel :: Click here to become a subscribing member

06-19-2003, 04:17 PM	#11
crazy4chevs Registered User Join Date: Oct 2002 Location: Des Moines WA. (Kent, area) Posts: 668	It will alittle but you can shim it and correct it really easy. __________________ 70 chev c10 swb fleet 72 grill, sb 400, 2/4 drop. 68 chev c10 swb fleet Early classic 4/6 drop with 4wheel disc brakes 9"rear 67-8 buckets tilt and A/C Classic GM Truck Club of Washington .



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