Tires and Wheels - What is the difference? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

timcos · 02-21-2007, 04:02 PM

I have 31*10.5*15 Big O tires now. With some old chrome rimes.

Consumer reports recommends these tires - Dunlop SP Sport 5000...I like them because they are relatively quiet with a lot of other good features.

I am using my K10 as a daily driver. I want a nice ride, quiet ride. I like stock height and a decent looking rim. H78-15 were the stock tire on mine.

What size rim? Why? Width?

What width of tire (dependent on rim?)? Why?

I ask you guys cause you are not selling me tires.

Thanks

dave2953 · 02-21-2007, 04:11 PM

Are you wanting to get away from a flotation size?

timcos · 02-21-2007, 04:14 PM

If by flotation you mean the big airy balloon like tires...yes I do not want that look as they normally come with a loud whine as it rolls down the asphalt.

bobthecop · 02-21-2007, 04:15 PM

H78-15 is about the same as p225-78-15, a narrow passenger tire, non radial bias ply tire and probably on 6-7in wheels

dave2953 · 02-21-2007, 04:20 PM

The 31x10.50x15 is pretty close to a 235/75/15. If you carry loads/tow, you probably want to go with an LT series tire. Do you like the overall dimensions of what you currently have? As a sidenote, I used to work for Big-O in North Ogden. They sold a lot of those Bigfoot tires.

timcos · 02-21-2007, 04:22 PM

I think the current tires is too tall and robs me of lots of efficiency.

I desire to get back to stock size with a little more rubber on the road.

Occasionally i may do a load...but it is not a hauler.

My newbie post in my sig has pics...those tires are still on it.

67ChevyRedneck · 02-21-2007, 04:23 PM

What is "Big-O"? Around here "Big-O" is the "Big-O" Dodge dealership.

Sorry, can't help with the tires, just curious.

dave2953 · 02-21-2007, 04:26 PM

It's a tire shop, but they also sell wheels, do alignments etc. They are only out West as far as I know.

dave2953 · 02-21-2007, 04:42 PM

Bob has the correct metric size to match your factory size. If your looking for something little wider you could try a 245/65 or 245/60. I run Michelin tires because they're quiet and provide a nice ride, but they do cost a bit.

**special-K** · 02-21-2007, 05:59 PM

Here`s 235/75x15s on stock suspension:

cruiserman · 02-21-2007, 06:13 PM

235s are pretty tiny on a stock rig. I'm running 235 85 R16s, which is a hair under 32".

237 75 R15 theoretical diameter is 28.8", but it varies. 31 is theoretically about 8% taller.

timcos · 02-24-2007, 03:39 AM

If the stock were H78-15's....

What is that comparable size? I think personally for me...31's are too big...and 10.5 tires are too wide. They look good don't get me wrong...but they are just too big for my daily driver.

Cheers,

Tim

**special-K** · 02-24-2007, 09:34 AM

What I show in my picture is close as close to stock,I think.The P.O.(original) kept his stock since new.
Here they are on a nicer truck.But,I think it`s sitting higher than stock,making the tires appear smaller:

**Palf70Step** · 02-24-2007, 09:37 AM

The 235/75x15 and the 255/70x15 have almost the same exact height/diameter. The 31x10.50x15 are about an inch taller than stock and definitely effects your speedo and power curve. If you want a little more width, but a reasonable tire the 255/70 (on an 7 or 8 inch rim) is the way to go in my opinion.

brak · 02-24-2007, 09:54 AM

this doesn't really answer your question per se...
but on my last 4x4 i was running 32x12.5 Dunlop mud rovers.

on a 4x4, i like the knobby look, and these tires were super quiet, had an excellent wear characteristic, and Personally i think they were quieter than the AT's that were on it originally. I will definately buy these tires again

I switched from the stock 16" wheels to 15's because the smaller wheel makes the tires look bigger, and it was easier for me to figure out the tire size compared to the metric system used by other tire sizes.

timcos · 03-02-2007, 11:55 AM

Here is a nice link...

http://www.antiquetyres.com.au/tyrerefguide.html

lowrollin70gmc · 03-02-2007, 02:37 PM

They didn't even spell tire right, how can we trust them?

(Actually has good info.)

timcos · 03-02-2007, 03:10 PM

Yeah I think that can use the excuse "It's a British thing." I had not seen spelling like that since last I was in Scotland.

02-21-2007, 04:02 PM	#1
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Tires and Wheels - What is the difference? I have 3110.515 Big O tires now. With some old chrome rimes. Consumer reports recommends these tires - Dunlop SP Sport 5000...I like them because they are relatively quiet with a lot of other good features. I am using my K10 as a daily driver. I want a nice ride, quiet ride. I like stock height and a decent looking rim. H78-15 were the stock tire on mine. What size rim? Why? Width? What width of tire (dependent on rim?)? Why? I ask you guys cause you are not selling me tires. Thanks __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

02-21-2007, 04:11 PM	#2
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Tires and Wheels - What is the difference? Are you wanting to get away from a flotation size? __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250

02-21-2007, 04:14 PM	#3
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Re: Tires and Wheels - What is the difference? If by flotation you mean the big airy balloon like tires...yes I do not want that look as they normally come with a loud whine as it rolls down the asphalt. __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

02-21-2007, 04:15 PM	#4
bobthecop Senior Member Join Date: Nov 2006 Location: Yukon Oklahoma Posts: 2,647	Re: Tires and Wheels - What is the difference? H78-15 is about the same as p225-78-15, a narrow passenger tire, non radial bias ply tire and probably on 6-7in wheels __________________ Happiness is towing your "new" truck home. 1972 C-10 1982 GMC (parts truck??) 1969 c10 parts truck 1969 C-10 ( my sons) 1992 Silverado 4X4 (now the boys truck)(now mine again) 2002 Tarus (my wife loves that car) Last edited by bobthecop; 02-21-2007 at 04:16 PM.

02-21-2007, 04:20 PM	#5
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Tires and Wheels - What is the difference? The 31x10.50x15 is pretty close to a 235/75/15. If you carry loads/tow, you probably want to go with an LT series tire. Do you like the overall dimensions of what you currently have? As a sidenote, I used to work for Big-O in North Ogden. They sold a lot of those Bigfoot tires. __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 Last edited by dave2953; 02-21-2007 at 04:21 PM.

02-21-2007, 04:22 PM	#6
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Re: Tires and Wheels - What is the difference? I think the current tires is too tall and robs me of lots of efficiency. I desire to get back to stock size with a little more rubber on the road. Occasionally i may do a load...but it is not a hauler. My newbie post in my sig has pics...those tires are still on it. __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

02-21-2007, 04:23 PM	#7
67ChevyRedneck Hittin E-Z Street on Mud Tires Join Date: Nov 2004 Location: Greenville, SC Posts: 23,090	Re: Tires and Wheels - What is the difference? What is "Big-O"? Around here "Big-O" is the "Big-O" Dodge dealership. Sorry, can't help with the tires, just curious. __________________ Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride American Born, Country by the Grace of God 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications!

02-21-2007, 04:26 PM	#8
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Tires and Wheels - What is the difference? It's a tire shop, but they also sell wheels, do alignments etc. They are only out West as far as I know. __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250

02-21-2007, 04:42 PM	#9
dave2953 Dave's not here, man Join Date: Jun 2004 Location: Winder, Georgia Posts: 2,000	Re: Tires and Wheels - What is the difference? Bob has the correct metric size to match your factory size. If your looking for something little wider you could try a 245/65 or 245/60. I run Michelin tires because they're quiet and provide a nice ride, but they do cost a bit. __________________ - 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250

02-21-2007, 05:59 PM	#10
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Tires and Wheels - What is the difference? Here`s 235/75x15s on stock suspension: __________________ "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 ~

02-21-2007, 06:13 PM	#11
cruiserman Registered User Join Date: Dec 2006 Location: Idaho Posts: 210	Re: Tires and Wheels - What is the difference? 235s are pretty tiny on a stock rig. I'm running 235 85 R16s, which is a hair under 32". 237 75 R15 theoretical diameter is 28.8", but it varies. 31 is theoretically about 8% taller. __________________ 72 C2500 LWB 402 Sierra Grande 05 Odyssey 08 Tundra

02-24-2007, 03:39 AM	#12
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Re: Tires and Wheels - What is the difference? If the stock were H78-15's.... What is that comparable size? I think personally for me...31's are too big...and 10.5 tires are too wide. They look good don't get me wrong...but they are just too big for my daily driver. Cheers, Tim __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

02-24-2007, 09:34 AM	#13
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Tires and Wheels - What is the difference? What I show in my picture is close as close to stock,I think.The P.O.(original) kept his stock since new. Here they are on a nicer truck.But,I think it`s sitting higher than stock,making the tires appear smaller: __________________ "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 ~

02-24-2007, 09:37 AM	#14
Palf70Step State of Confusion! Join Date: Jul 2002 Location: Gulfport, MS USA Posts: 47,216	Re: Tires and Wheels - What is the difference? The 235/75x15 and the 255/70x15 have almost the same exact height/diameter. The 31x10.50x15 are about an inch taller than stock and definitely effects your speedo and power curve. If you want a little more width, but a reasonable tire the 255/70 (on an 7 or 8 inch rim) is the way to go in my opinion. __________________ Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

02-24-2007, 09:54 AM	#15
brak Registered User Join Date: Apr 2006 Location: MinneSNOWta Posts: 1,381	Re: Tires and Wheels - What is the difference? this doesn't really answer your question per se... but on my last 4x4 i was running 32x12.5 Dunlop mud rovers. on a 4x4, i like the knobby look, and these tires were super quiet, had an excellent wear characteristic, and Personally i think they were quieter than the AT's that were on it originally. I will definately buy these tires again I switched from the stock 16" wheels to 15's because the smaller wheel makes the tires look bigger, and it was easier for me to figure out the tire size compared to the metric system used by other tire sizes. __________________ 2003 GMC Sierra 1500 WT 1995 Nissan Hardbody 2016 Hyundai Veloster Turbo DC2 (SW/AW) Clyde W. Harvey USN "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery" Winston Churchill



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03-02-2007, 11:55 AM	#16
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Re: Tires and Wheels - What is the difference? Here is a nice link... http://www.antiquetyres.com.au/tyrerefguide.html __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

03-02-2007, 02:37 PM	#17
lowrollin70gmc Too many projects Join Date: Mar 2004 Location: Fargo, ND land of the flat hills Posts: 1,147	Re: Tires and Wheels - What is the difference? They didn't even spell tire right, how can we trust them? (Actually has good info.) __________________ Andrew 84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck" 70 GMC C1500 LWB My first truck: shaved, bagged, and more: the lowrollin70gmc 68 K20 Suburban 12V Cummins/NV5600/NP205/D60/11.5AAM 3.73s "Dakota Cadillac" 63 Chevy II Nova Coupe 250 I6/T56/4.56s "Economy car" 53 Willys Wagon 350/NV4500/BW4401/HP D44/9inch “Winter Wagon” 30 Model A 16 Focus ST

03-02-2007, 03:10 PM	#18
timcos Chief Honcho In Charge Join Date: Aug 2006 Location: Bentonville AR Posts: 970	Re: Tires and Wheels - What is the difference? Yeah I think that can use the excuse "It's a British thing." I had not seen spelling like that since last I was in Scotland. __________________ 1992 1500 4x4 Shortbed 1984 Ford F250 Supercab Longbed 6.9L Diesel 1972 K10 Cheyenne Super Fleetside Short Bed - 350 - A/C 1971 VW SuperBeetle 1960 Wife 1984 Son 1986 Son 1989 Son Previous Trucks 1967 C10 SWB (1980-1981) 1971 C10 LWB (1998-2004)

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