wheels and tire question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Brock · 10-12-2008, 04:20 PM

Does anyone know or have an opinion (man does that open a can) on how wide of a tire you can put on a 7 inch rim? (15in diameter)

cparman · 10-12-2008, 05:28 PM

If you go to a tire manufacturers web site, and look at their specification page, it will show you all kinds of info. What that means: lets say you want a 235/60r15. find that tire size, and the kind of tire you want, and it will show you diameter, section width, UTQG, AND it will show you recommended rim width. Usually there will be an inch or two spread in the rim width, and see where ya are. Think I have ever done that before??? lol

tcb-1 · 10-12-2008, 07:44 PM

I have heard of 255/60/15 working, but I "think" that's about the widest while running safe.

**Boog** · 10-12-2008, 07:50 PM

A 9" tread width will fit the 7" rim ok. Obviously you can mount a much wider tire on a 7" rim but it gets really dumb looking after a point. GM put 275/60/15 on the SS 454 trucks using the 7" rim. It looks good.

Longhorn Man · 10-12-2008, 07:51 PM

it becomes unsafe after a point too.

**special-K** · 10-12-2008, 08:27 PM

It`s a matter of the tread laying flat on the road,too.

big_al_71 · 10-12-2008, 08:42 PM

Quote:

Originally Posted by Boog

A 9" tread width will fit the 7" rim ok. Obviously you can mount a much wider tire on a 7" rim but it gets really dumb looking after a point. GM put 275/60/15 on the SS 454 trucks using the 7" rim. It looks good.

+1 here is a pict of my old 89 gmc 1500 with 15 inch rims..

Brock · 10-13-2008, 09:23 AM

this is actually a double edged question...I'm looking for the widest possible tire for a 7" rim for my dirt-track car next year, so looks really don't matter AND I'm looking for the widest that look decent on the truck (unfortunatly it looking like thats also gonna be next year).

Myself · 10-13-2008, 11:16 AM

I have run 275/60-15 and 255/60-15 on 7" rims. The 275/60-15 will wear out quicker though.

10-12-2008, 04:20 PM	#1
Brock upgrading to an older model Join Date: Aug 2007 Location: Sacramento, KY Posts: 346	wheels and tire question Does anyone know or have an opinion (man does that open a can) on how wide of a tire you can put on a 7 inch rim? (15in diameter) __________________ 68 stepside, short-box, multi-colored (for now)

10-12-2008, 05:28 PM	#2
cparman sharp as a marble Join Date: Jan 2007 Location: atlantic beach,florida Posts: 1,082	Re: wheels and tire question If you go to a tire manufacturers web site, and look at their specification page, it will show you all kinds of info. What that means: lets say you want a 235/60r15. find that tire size, and the kind of tire you want, and it will show you diameter, section width, UTQG, AND it will show you recommended rim width. Usually there will be an inch or two spread in the rim width, and see where ya are. Think I have ever done that before??? lol Last edited by cparman; 10-12-2008 at 05:29 PM. Reason: spelling

10-12-2008, 07:44 PM	#3
tcb-1 Nothing to see here..... Join Date: Jun 2007 Location: Shawnee, KS Posts: 4,625	Re: wheels and tire question I have heard of 255/60/15 working, but I "think" that's about the widest while running safe. __________________ Doug THANK YOU to our American Soldiers & Veterans - POW MIA "You will NEVER be forgotten". The democracy will cease to exist when you take away from those who are willing to work and give to those who would not. Thomas Jefferson

10-12-2008, 07:50 PM	#4
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,535	Re: wheels and tire question A 9" tread width will fit the 7" rim ok. Obviously you can mount a much wider tire on a 7" rim but it gets really dumb looking after a point. GM put 275/60/15 on the SS 454 trucks using the 7" rim. It looks good. __________________ 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

10-12-2008, 07:51 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Re: wheels and tire question it becomes unsafe after a point too.

10-12-2008, 08:27 PM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: wheels and tire question It`s a matter of the tread laying flat on the road,too. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

10-13-2008, 09:23 AM	#8
Brock upgrading to an older model Join Date: Aug 2007 Location: Sacramento, KY Posts: 346	Re: wheels and tire question this is actually a double edged question...I'm looking for the widest possible tire for a 7" rim for my dirt-track car next year, so looks really don't matter AND I'm looking for the widest that look decent on the truck (unfortunatly it looking like thats also gonna be next year). __________________ 68 stepside, short-box, multi-colored (for now)

10-13-2008, 11:16 AM	#9
Myself Registered User Join Date: Oct 2005 Location: Northern Arkansas Posts: 1,144	Re: wheels and tire question I have run 275/60-15 and 255/60-15 on 7" rims. The 275/60-15 will wear out quicker though.



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