Quick question on tire size..... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hotrod70C10 · 06-21-2003, 01:23 PM

I'm about to go drop some money on a set of Bfgoodrich radial t/a's. I currently have them in 255/70/15 I want to keep that size on the back and change to a smaller sidewall on the front. The next down in a t/a tire is 255/60/15. How tall is that from tread to tread. I don't want to spend a bunch of money and not be happy with it. Thanks in advance. Billy

greasemonkey · 06-21-2003, 01:39 PM

27.047244 inches diameter. The 255/70's are 29.055118 inches. So you would have approximately 2" difference between the two.

This is how you figure it out:
255 X .6 = 153 X 2 = 306 / 25.4 = 12.047244 + 15 = 27.047244"

John

Glen · 06-21-2003, 04:17 PM

there is a tire size calculator on www.randysringandpinion.com. you can also determine rpms while your there.

Sorry, typed a , instead of a .

try it again.

**Stocker** · 06-21-2003, 04:48 PM

Quote:

Originally posted by Glen
there is a tire size calculator on www.randysringandpinion.com,

Dang - I couldn't get the link to work.

Hotrod70C10 · 06-21-2003, 05:02 PM

Thanks guys!

jef5150 · 06-21-2003, 05:27 PM

http://www.homestead.com/dougsmaveri...izecharts.html

zlivewire · 06-21-2003, 09:58 PM

gg

sbc350gearhead · 06-21-2003, 10:03 PM

Summit lists the diameter of all the bfg ta's. diameter can vary between manufacturers even in the same size.

06-21-2003, 01:23 PM	#1
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	Quick question on tire size..... I'm about to go drop some money on a set of Bfgoodrich radial t/a's. I currently have them in 255/70/15 I want to keep that size on the back and change to a smaller sidewall on the front. The next down in a t/a tire is 255/60/15. How tall is that from tread to tread. I don't want to spend a bunch of money and not be happy with it. Thanks in advance. Billy __________________ 70' C-10 LWB Fleetside 4.5/6 drop

06-21-2003, 01:39 PM	#2
greasemonkey Registered User Join Date: Dec 2001 Location: Pace, FL Posts: 2,155	27.047244 inches diameter. The 255/70's are 29.055118 inches. So you would have approximately 2" difference between the two. This is how you figure it out: 255 X .6 = 153 X 2 = 306 / 25.4 = 12.047244 + 15 = 27.047244" John __________________ 1942 Master Deluxe 1969 C/10 1985 Blazer CUCV 1987 Jimmy 2004 Tahoe 2005 Silverado 1500 2005 Silverado 3500

06-21-2003, 04:17 PM	#3
Glen Registered User Join Date: Jan 2003 Location: Chandler, AZ Posts: 189	there is a tire size calculator on www.randysringandpinion.com. you can also determine rpms while your there. Sorry, typed a , instead of a . try it again. Last edited by Glen; 06-21-2003 at 06:30 PM.

06-21-2003, 05:02 PM	#5
Hotrod70C10 Low & Slow Join Date: Dec 2002 Location: Oklahoma Posts: 1,047	Thanks guys! __________________ 70' C-10 LWB Fleetside 4.5/6 drop

06-21-2003, 09:58 PM	#7
zlivewire Registered User Join Date: Sep 2002 Location: ny Posts: 6	fdf gg

06-21-2003, 05:27 PM	#6
jef5150 Inline 69 Join Date: Apr 2003 Location: valleysprings,california Posts: 1,018	http://www.homestead.com/dougsmaveri...izecharts.html

06-21-2003, 10:03 PM	#8
sbc350gearhead Registered User Join Date: Mar 2003 Location: Columbus Ohio Posts: 1,413	Summit lists the diameter of all the bfg ta's. diameter can vary between manufacturers even in the same size.



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