255-70-15 heigth tires - The 1947 - Present Chevrolet & GMC Truck Message Board Network

profe56 · 07-21-2011, 12:24 PM

I'm going to buy a new set of tires for my truck before It had 30's ? 15 now 205 70-15 I have a miths montero w 255-70-16 the height is 29 in but I want to know if a member has 255-70-15 or 255-60-15 and how high they are.

ges55 · 07-21-2011, 01:00 PM

Here you go.

http://www.1010tires.com/TireSizeCal...?action=submit

PanelDeland · 07-21-2011, 07:14 PM

I don't know the height of my tires offhand but I have a 2 1/2-4 drop and 235/70 15 on front and 255/70-15 on rear.I think these pics may show the stance.

BMERDOC · 07-21-2011, 07:27 PM

My 255/70R15 measures at 28". Add a smidge for brand new ones. Winston Winner GT tires, whatever those are. I bought them used. I used 255/60R15 on the front.

Mike C · 07-21-2011, 08:35 PM

Knowing what all the numbers mean allows you to figure this out whenever you need it. It is close but not exact because of differing tire construction.

For example, a 255 70 15:

Section width is 255 mm, converted to inches, 255mm divided by 25.4 mm/in or call it 10 inches.

Aspect ratio is 70% of the section width, or 7".

Double the aspect ratio for the bottom and top of the tire which is 14 inches.

Add 14 inches to rim diameter of 15 inches and you have a 29" tall tire.

**Boog** · 07-21-2011, 09:54 PM

Or just go to the tire rack site and view the tire specs there already worked out for you.

crazy longhorn · 07-21-2011, 11:16 PM

Quote:

Originally Posted by Mike C

Knowing what all the numbers mean allows you to figure this out whenever you need it. It is close but not exact because of differing tire construction.

For example, a 255 70 15:

Section width is 255 mm, converted to inches, 255mm divided by 25.4 mm/in or call it 10 inches.

Aspect ratio is 70% of the section width, or 7".

Double the aspect ratio for the bottom and top of the tire which is 14 inches.

Add 14 inches to rim diameter of 15 inches and you have a 29" tall tire.

2nd that, a 255/70/15, is 29" tall....it also fits good on an 8" wide wheel. I run 225/75's up front on 6 1/2" rallies(that one goes 28" & some change)....crazyl

profe56 · 07-22-2011, 12:52 AM

Thank you Guys!!!! a lot of info I think 255 70 15 is what I want.

07-21-2011, 12:24 PM	#1
profe56 Registered User Join Date: Nov 2008 Location: Chula Vista California Posts: 526	255-70-15 heigth tires I'm going to buy a new set of tires for my truck before It had 30's ? 15 now 205 70-15 I have a miths montero w 255-70-16 the height is 29 in but I want to know if a member has 255-70-15 or 255-60-15 and how high they are.

07-21-2011, 01:00 PM	#2
ges55 BLACK SATIN Join Date: Jan 2009 Location: canton, IL Posts: 266	Re: 255-70-15 heigth tires Here you go. http://www.1010tires.com/TireSizeCal...?action=submit __________________ 67 C10 Fleetside LWB-283, 3 on the tree,power assisted steering, father-in-law bought it new 67 C20 Fleetside LWB-'85 305 V8 (original was 250 6 cyl), Holley 600 carb, full length Hedman headers, dual exhaust behind the back wheels, 4 spd , manual steering 85 C10 Silverado- 305ci

07-21-2011, 07:14 PM	#3
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,993	Re: 255-70-15 heigth tires I don't know the height of my tires offhand but I have a 2 1/2-4 drop and 235/70 15 on front and 255/70-15 on rear.I think these pics may show the stance. Attached Images __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

07-21-2011, 07:27 PM	#4
BMERDOC Registered User Join Date: Jun 2011 Location: Richmond,Va Posts: 2,934	Re: 255-70-15 heigth tires My 255/70R15 measures at 28". Add a smidge for brand new ones. Winston Winner GT tires, whatever those are. I bought them used. I used 255/60R15 on the front. __________________ Nick Carter 1967 C10 Short bed Fleetside Project Cheap Thrills! 2WD C10 Modern/Performance Alignments Easiest Alignment Ever!

07-21-2011, 08:35 PM	#5
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,717	Re: 255-70-15 heigth tires Knowing what all the numbers mean allows you to figure this out whenever you need it. It is close but not exact because of differing tire construction. For example, a 255 70 15: Section width is 255 mm, converted to inches, 255mm divided by 25.4 mm/in or call it 10 inches. Aspect ratio is 70% of the section width, or 7". Double the aspect ratio for the bottom and top of the tire which is 14 inches. Add 14 inches to rim diameter of 15 inches and you have a 29" tall tire. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

07-21-2011, 09:54 PM	#6
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,200	Re: 255-70-15 heigth tires Or just go to the tire rack site and view the tire specs there already worked out for you. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

07-22-2011, 12:52 AM	#8
profe56 Registered User Join Date: Nov 2008 Location: Chula Vista California Posts: 526	Re: 255-70-15 heigth tires Thank you Guys!!!! a lot of info I think 255 70 15 is what I want.



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