255/70 R15 Help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jimjific · 12-04-2013, 04:37 PM

Hello,

I'm hoping someone can help me determine the diameter of the wheel/tire combo of a 255/70R15 mounted on a 15 x 8 rim. I have a set of rally's that I want to run on a stock height C-10 Short Stepside and I am thinking of going with that size tire. Could someone running this combo measure their tire and let me know? It would be nice to have a feel for how it will compare to what I'm running now before I make the tire investment.

Thanks,
Jim

**Stocker** · 12-04-2013, 04:49 PM

Per Tire Rack, 29.1".

**Already Gone** · 12-04-2013, 04:53 PM

I have the same tires on my truck and the height is 29.4 inches. They should work well and fill out your wheelwells real nice on your stock height truck.

Jimjific · 12-04-2013, 04:54 PM

Cool, thanks for the quick replies.

Jim

CC69Rat · 12-04-2013, 05:37 PM

Dad and I built this truck a while back ..

http://67-72chevytrucks.com/vboard/s...=457529&page=3

Post #66. That's how it would look, .. 255/70/15 on an 8" steelie, should be the same backspacing and fit the same on your 69. We had 4" drop springs in this truck. ~3" drop in the front, 235/70/15. It sat pretty good, .. I miss this old truck.

Kennuck · 12-04-2013, 06:30 PM

My Short step with 255 70 15 tires no drop, yet :-)

Kennuck · 12-04-2013, 06:32 PM

Forgot to attach the pic

Jimjific · 12-04-2013, 06:54 PM

Thanks for the pictures. Your trucks look great with the tire wheel combo, looks like a winner. I will post pictures of before and after when I get them. It will be a little bit since I have to finish sand blasting three more rims and it's getting cold here in upstate NY. I have the rings and centers all ready to go.

Jim

Jimjific · 12-04-2013, 09:04 PM

__

Jimjific · 12-04-2013, 09:12 PM

Here's an image of the one rim I have done. I might want to go with a darker paint color for more contrast. I can't wait to see them on the truck.

Kennuck · 12-04-2013, 09:15 PM

I like the Rally's I'm going that route too once I get my 5 lug disc brake conversion completed.

guzzidude · 12-04-2013, 09:22 PM

Should have bought from Direct Tire on Cyber Monday. They had 255/70r15 Cooper Cobra Radials for $398 shipped. Today they are up around $500 again. Uggh. Xmas stopped me.

JimboC10 · 12-04-2013, 09:33 PM

255 x .7 = 178.5
178.5 X 2 = 357
357 ÷ 25.4 = 14
14 + 15 = 29

29 inch (approx) diameter

This is two sidewalls added to 15 in. wheel to get tire diameter.

Hawghauler · 12-04-2013, 09:45 PM

Here's a great place to compare tire sizes. I used them when I went hunting the right size snow tires for my truck.

http://ejelta.com/tiresize/index.htm...el=&maxdelta=2

slow-1 · 12-05-2013, 11:20 PM

I am running that size tires.

12-04-2013, 04:37 PM	#1
Jimjific Registered User Join Date: Aug 2013 Location: Albany, NY Posts: 145	255/70 R15 Help Hello, I'm hoping someone can help me determine the diameter of the wheel/tire combo of a 255/70R15 mounted on a 15 x 8 rim. I have a set of rally's that I want to run on a stock height C-10 Short Stepside and I am thinking of going with that size tire. Could someone running this combo measure their tire and let me know? It would be nice to have a feel for how it will compare to what I'm running now before I make the tire investment. Thanks, Jim __________________ Thanks, Jim - 69 Short Step CST 350 AC/PB/PS - 69 Short Step 307 Man Column/PS

12-04-2013, 04:49 PM	#2
Stocker 20' Daredevil (Ret) Join Date: May 2003 Location: Jefferson State Posts: 13,722	Re: 255/70 R15 Help Per Tire Rack, 29.1". __________________ - Mike - 1972 K20 LWB 350/350/205 RIP El Jay

12-04-2013, 04:53 PM	#3
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,143	Re: 255/70 R15 Help I have the same tires on my truck and the height is 29.4 inches. They should work well and fill out your wheelwells real nice on your stock height truck. __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

12-04-2013, 04:54 PM	#4
Jimjific Registered User Join Date: Aug 2013 Location: Albany, NY Posts: 145	Re: 255/70 R15 Help Cool, thanks for the quick replies. Jim __________________ Thanks, Jim - 69 Short Step CST 350 AC/PB/PS - 69 Short Step 307 Man Column/PS

12-04-2013, 05:37 PM	#5
CC69Rat Registered User Join Date: Jan 2011 Location: Chattanooga TN Posts: 6,212	Re: 255/70 R15 Help Dad and I built this truck a while back .. http://67-72chevytrucks.com/vboard/s...=457529&page=3 Post #66. That's how it would look, .. 255/70/15 on an 8" steelie, should be the same backspacing and fit the same on your 69. We had 4" drop springs in this truck. ~3" drop in the front, 235/70/15. It sat pretty good, .. I miss this old truck. __________________ Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 Currently underway 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet Sold 1985 Silverado Short Fleet Sold 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)

12-04-2013, 06:30 PM	#6
Kennuck Registered User Join Date: Oct 2013 Location: Dresden, Ontario Posts: 647	Re: 255/70 R15 Help My Short step with 255 70 15 tires no drop, yet :-) __________________ 1970 Short Wide 5.3 4L60E BlackBear tune 3:73 gears, Boyd's Tank 2.5 / 4 drop 5 lug disc brakes Vintage Air 18x8 Ridlers 255/55 frt. 18x9.5 275/60 rear

12-04-2013, 06:32 PM	#7
Kennuck Registered User Join Date: Oct 2013 Location: Dresden, Ontario Posts: 647	Re: 255/70 R15 Help Forgot to attach the pic Attached Images __________________ 1970 Short Wide 5.3 4L60E BlackBear tune 3:73 gears, Boyd's Tank 2.5 / 4 drop 5 lug disc brakes Vintage Air 18x8 Ridlers 255/55 frt. 18x9.5 275/60 rear

12-04-2013, 06:54 PM	#8
Jimjific Registered User Join Date: Aug 2013 Location: Albany, NY Posts: 145	Re: 255/70 R15 Help Thanks for the pictures. Your trucks look great with the tire wheel combo, looks like a winner. I will post pictures of before and after when I get them. It will be a little bit since I have to finish sand blasting three more rims and it's getting cold here in upstate NY. I have the rings and centers all ready to go. Jim __________________ Thanks, Jim - 69 Short Step CST 350 AC/PB/PS - 69 Short Step 307 Man Column/PS

12-04-2013, 09:04 PM	#9
Jimjific Registered User Join Date: Aug 2013 Location: Albany, NY Posts: 145	Re: 255/70 R15 Help __ __________________ Thanks, Jim - 69 Short Step CST 350 AC/PB/PS - 69 Short Step 307 Man Column/PS Last edited by Jimjific; 12-04-2013 at 09:13 PM. Reason: Double Post

12-04-2013, 09:12 PM	#10
Jimjific Registered User Join Date: Aug 2013 Location: Albany, NY Posts: 145	Re: 255/70 R15 Help Here's an image of the one rim I have done. I might want to go with a darker paint color for more contrast. I can't wait to see them on the truck. __________________ Thanks, Jim - 69 Short Step CST 350 AC/PB/PS - 69 Short Step 307 Man Column/PS

12-04-2013, 09:15 PM	#11
Kennuck Registered User Join Date: Oct 2013 Location: Dresden, Ontario Posts: 647	Re: 255/70 R15 Help I like the Rally's I'm going that route too once I get my 5 lug disc brake conversion completed. Attached Images __________________ 1970 Short Wide 5.3 4L60E BlackBear tune 3:73 gears, Boyd's Tank 2.5 / 4 drop 5 lug disc brakes Vintage Air 18x8 Ridlers 255/55 frt. 18x9.5 275/60 rear

12-04-2013, 09:22 PM	#12
guzzidude Registered User Join Date: Sep 2008 Location: SE Coast Posts: 32	Re: 255/70 R15 Help Should have bought from Direct Tire on Cyber Monday. They had 255/70r15 Cooper Cobra Radials for $398 shipped. Today they are up around $500 again. Uggh. Xmas stopped me.

12-04-2013, 09:33 PM	#13
JimboC10 Registered User Join Date: Aug 2013 Location: Beaufort SC Posts: 11	Re: 255/70 R15 Help 255 x .7 = 178.5 178.5 X 2 = 357 357 ÷ 25.4 = 14 14 + 15 = 29 29 inch (approx) diameter This is two sidewalls added to 15 in. wheel to get tire diameter.

12-04-2013, 09:45 PM	#14
Hawghauler Registered User Join Date: Nov 2012 Location: Whidbey Island/Edmonds,WA Posts: 360	Re: 255/70 R15 Help Here's a great place to compare tire sizes. I used them when I went hunting the right size snow tires for my truck. http://ejelta.com/tiresize/index.htm...el=&maxdelta=2 __________________ If I have to be on 4 wheels, It has to be a classic Chevy 1967 c10 Longbed (Hawghauler/Icy weather transport) 2003 BMW K1200GT (Rain bike) 2007 Softail Deuce (Sun bike) 2009 Ultra Classic Electra Glide (Everything else bike)

12-05-2013, 11:20 PM	#15
slow-1 Registered User Join Date: May 2013 Location: Central NC Posts: 830	Re: 255/70 R15 Help I am running that size tires. __________________ 1972 Cheyene C-10 "Ole Green" My Grandfathers truck (early 70's to 1983) My first vehicle (1983) Original 350 (3 rebuilds) 700R4 from Bowtie Overdrives



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.