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#1 |
Registered User
Join Date: Nov 2007
Location: Eureka, CA
Posts: 60
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C20 Load Range C or E?
Hi all. My 71 C20 has the heavy duty springs front and rear options, with leafs in the rear, which I believe brings the max weight for the rear end to 5500 lbs according to the tag in the driver door frame.
It is time to buy new wheels and tires, as what is on there is a mix of 16" and 16.5" split rims with 20 year old tires. I'm trying to decide if I should put "C" or "E" load range tires. I'm getting the Cooper Discoverer A/T3 tires. I can't ever imagine that I would be hauling more than 2000 lbs in the bed, and if I have this figured right, "C" tires would handle that just fine....? I'm not going to use this as a heavy hauler, just for firewood or hay for the horses. Does that sound right, or should I just go for the "E"s? My logic is swirling around the possibly false idea that "C"s are going to give me a better ride in the already bouncy C20.
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Stan Feldsine - Build Thread - http://67-72chevytrucks.com/vboard/s...d.php?t=673856 1969 C10 LWB Fleetside - 350 - 700R4 1971 C20 LWB Fleetside - 350 - TB350 |
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#2 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
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Re: C20 Load Range C or E?
If your going to work the truck I would go with E rated tires. Air pressure plays a huge role in how the truck rides. Up front in my 1967 c20 I run 58psi and out back 65psi unless I know there is a heavier then usual load. Then they get bumped up to 70psi. but it rides rough at 70.
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
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#3 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,721
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Re: C20 Load Range C or E?
There is a "D" option in there as well. I ran 265 75 16 D rated Michelins on my 70 C2500 and thought they were a great fit for how I used the truck.
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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 |
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#4 |
Registered User
Join Date: Nov 2007
Location: Eureka, CA
Posts: 60
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Re: C20 Load Range C or E?
Thanks, I'll consider the "D" option as well!
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Stan Feldsine - Build Thread - http://67-72chevytrucks.com/vboard/s...d.php?t=673856 1969 C10 LWB Fleetside - 350 - 700R4 1971 C20 LWB Fleetside - 350 - TB350 |
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#5 |
Registered User
Join Date: Nov 2007
Location: Eureka, CA
Posts: 60
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Re: C20 Load Range C or E?
Incidentally, I'm going for 275/70R17s for the tires. The shop is going to make sure they don't rub, and if they do, the 265/75R17s are the second choice.
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Stan Feldsine - Build Thread - http://67-72chevytrucks.com/vboard/s...d.php?t=673856 1969 C10 LWB Fleetside - 350 - 700R4 1971 C20 LWB Fleetside - 350 - TB350 |
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#6 |
Registered User
Join Date: Nov 2007
Location: Eureka, CA
Posts: 60
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Re: C20 Load Range C or E?
Well, went down to my local tire shop, and they had a 285/70/17 tire and wheel off a Dodge Truck. They put it on the front, and it went lock to lock with no rubbing anywhere. Didn't drive it so it is possible it might still under compression like a turn into a driveway.
The 285 is a 32.7 x 11.2 tire. I feel pretty safe going with a 275/70/17 tire, and I'm going with the Cooper Discoverer AT3s with the 10 Ply E rating. The 285 just looked like it was too big stuffed in there. The 275 is a 32.2 x 10.83 tire.
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Stan Feldsine - Build Thread - http://67-72chevytrucks.com/vboard/s...d.php?t=673856 1969 C10 LWB Fleetside - 350 - 700R4 1971 C20 LWB Fleetside - 350 - TB350 |
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#7 |
Registered User
![]() Join Date: Mar 2014
Location: Las Vegas Nevada
Posts: 93
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Re: C20 Load Range C or E?
Got a logging claim up the 96, I always get Yreka and Eureka jacked up! I am closer to the border. Nice stock.
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72 K10 |
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#8 |
Registered User
Join Date: Jul 2013
Location: Winnsboro Texas
Posts: 367
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Re: C20 Load Range C or E?
I have always had good results with the Cooper at3. Plus they are one of the last remaining American owned/based and American made tire companies out there.
I have had a set of the 10 ply on a 3/4 truck and they rode surprisingly well. Like 72mario said, air pressure is makes a world of difference. Post some pics when you get them installed!
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The bitterness of poor quality lingers long after the sweetness of a low price is forgotten. |
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#9 |
Registered User
Join Date: Nov 2007
Location: Eureka, CA
Posts: 60
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Re: C20 Load Range C or E?
I'll post some pics when I get them installed. Ordered a set of these wheels to go with them.
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Stan Feldsine - Build Thread - http://67-72chevytrucks.com/vboard/s...d.php?t=673856 1969 C10 LWB Fleetside - 350 - 700R4 1971 C20 LWB Fleetside - 350 - TB350 |
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#10 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,858
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Re: C20 Load Range C or E?
WOW! 90,000 miles on a set of tires on a truck that hauls? What's your trick? I've run some sets of Michelins on trucks and never came near. I've never heard of any tire on anything go anywhere near that far. I'm amazed!
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"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 ~ |
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#11 |
Registered User
Join Date: Jun 2015
Location: manteca
Posts: 76
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Re: C20 Load Range C or E?
Please post pictures when mounted, i'm interested
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#12 | |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: C20 Load Range C or E?
Quote:
2) I drive that truck like a Grumpy old man the last time it spun the wheels is when my son drove it home from the dealership .in 1995 ![]()
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#13 |
Active Member
![]() Join Date: Oct 2009
Location: Columbus Ohio
Posts: 157
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Re: C20 Load Range C or E?
Hi, I work at the biggest IndependeI tire chain in the US For 35 Years Until I Hurt My Back. But here is my 2 cents worth. I would go with load Range E they will last a bit longer and max psi is 80 when your not Hauling a load keep 60 psi in them .i Would get The radial tire. Between load range d or e ride will be about the same. If u want more of my help let me no. I have help randy ( Teeitup) and a few others out talk to you later Doug
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#14 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,858
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Re: C20 Load Range C or E?
I have never done a burn out. Not even on my thumper Harley. I respect my equipment. Burnouts are for the staging area. I got 335k from my factory order '92 that was never at net weight on original motor. That's very impressive miles from a set of tires is all I'm saying. I'm easy on the machinery, too. I used to wonder if I'd ever grow up. Now I know I never will, but have gotten wiser. I'm 60
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"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 ~ Last edited by special-K; 02-29-2016 at 08:57 AM. |
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#15 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: C20 Load Range C or E?
I don't know, I guess I just keep them rotated and I hate buying tires because I know it's going to cost me another grand . I'm the guy who pulls over and lets those who like to tailgate pass .I'm not in that much of a hurry anymore . The last time I put new tires on that truck was 2010 and they still look new (when the mud from the farm gets cleaned off
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#16 |
Registered User
Join Date: Jun 2015
Location: manteca
Posts: 76
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Re: C20 Load Range C or E?
Remember that the tires have a shelf life...check the date..they may look new but could be trouble.
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#17 |
The Niner
![]() Join Date: Nov 2010
Location: Broad Brook, CT
Posts: 2,494
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Re: C20 Load Range C or E?
I've always gotten 80K-90K out of all my sets of Michelins. Would never buy anything else.
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"A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/ |
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#18 |
Registered User
Join Date: Nov 2007
Location: Eureka, CA
Posts: 60
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Re: C20 Load Range C or E?
Alright! Got a nice looking set of Motorsport Ultra 175B Rouge wheels, and the tires are 275/70R17 Load Range E. Looks great, I'm real happy with this setup. The truck actually rides a lot smoother than what were previously the stock 8.5 x 16 tires on the back.
__________________
Stan Feldsine - Build Thread - http://67-72chevytrucks.com/vboard/s...d.php?t=673856 1969 C10 LWB Fleetside - 350 - 700R4 1971 C20 LWB Fleetside - 350 - TB350 |
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#19 |
Registered User
![]() Join Date: Dec 2015
Location: Holland Mi.
Posts: 302
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Re: C20 Load Range C or E?
I am part of the Michelin camp too. On my 1/2 ton trucks and SUV's I have had great luck getting around 90,000 or a little better with the LTX. Had a set of 20" on the last motor home but didn't have a chance to put many miles on those. Keep them balanced, rotated and inflated and they will serve you well.
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