Need advice on larger tires for my 70 c10 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JTknives · 01-01-2015, 02:29 AM

This weekend I'm going to get new tires. My truck is stock 1970 C10 fleetside and nothing special besides me paying an even $200 for it with a full tank of gas lol. It's Rusty but runs like a champ. The tires on it right now are 235/75R16 and the spair is a 235/85R16 facepalm. I know the spair fits as that was what was on it when I got it lol. I'm wanting to go larger much larger and wider. I had been eyeballing some 265/75R16 but don't know if thy would fit or if I could go even larger. I'm running the stock rims as I got like 6 of them and thy match the truck. So any help would be great and very appreciated. Thank you very much

Jarod Todd

ScottieB · 01-01-2015, 05:16 AM

I have some 275 55 r20... I had to add 1.5" spacers so they wouldn't rub the front.

You could go wider, especially if your rims stick out like they should. I'm not a tire guy, this setup just worked for me

JTknives · 01-01-2015, 05:24 AM

With out the spacer how bad was the rubbing. Was it just while turning sharp?
My tires right now are 30" tall and 9.25" wide. And there looks to be oddles of room around them considering the tire I want is 31.6" tall and 10.4" wide.

ScottieB · 01-01-2015, 05:42 AM

no spacers at all ... the rears were stuck onto the bed frame
the fronts rubbed anything more than 1 turn of wheel (my wheel turns 1.5-2 turns i think).

The adapters were only $102 shipped from ebay for 1.5" ... but they make a 2" as well (for 6 lug 7/16 - which is what I got)

picture:
http://67-72chevytrucks.com/vboard/a...ictureid=20750

ebay 1.5":
http://www.ebay.com/itm/321562953024

ebay 2":
http://www.ebay.com/itm/251691622370

JTknives · 01-01-2015, 05:50 AM

What's the back spacing on your wheels. I'm stock so I think I'm at 4" I can feel about a 2" gap or more between my current tire and the truck so with my current wheels adding just over an inch would not be a problem.

ScottieB · 01-01-2015, 05:53 AM

I have no clue, i'm not a wheels guy.

Mike C · 01-01-2015, 11:18 AM

Currently my 69 short step has the original 15x7 wheels off my Jimmy on it with 265 75 15 radials on it. They don't rub anywhere but the bed if you take a corner faster than the truck wnts to corner...

Next week it gets a 5 lug swap and 4.5"/6" lowering job along with 235 55 17 fronts on 17x8 wheels and 275 55 17 rears on 17x 9 wheels. I've done my best math so I hope this all fits...

javelinmania · 01-01-2015, 11:56 AM

Here's what I did, on Ebay, I purchased a set of Take Off Wheels - 17" Chevrolet Suburban, Avalanche, Tahoe - Hollander Number 5299 and then put Michelin LTX M/S2 P245/70R17 on them. Looks nice. I did not use the Wheel Centers as they are kind of funky and you have plastic covering the lug nuts and can't tighten them very well. I will look for a center insert to fit once I take the time to measure the width of the hole and figure out what's needed (Flat insert or one that sticks out) since I'm upgrading the suspension. I did put on 1.5" spacers so that the wheels line up correctly. The offset is definitely different than the original wheels.

01-01-2015, 02:29 AM	#1
JTknives Registered User Join Date: May 2014 Location: Prove, Utah Posts: 9	Need advice on larger tires for my 70 c10 This weekend I'm going to get new tires. My truck is stock 1970 C10 fleetside and nothing special besides me paying an even $200 for it with a full tank of gas lol. It's Rusty but runs like a champ. The tires on it right now are 235/75R16 and the spair is a 235/85R16 facepalm. I know the spair fits as that was what was on it when I got it lol. I'm wanting to go larger much larger and wider. I had been eyeballing some 265/75R16 but don't know if thy would fit or if I could go even larger. I'm running the stock rims as I got like 6 of them and thy match the truck. So any help would be great and very appreciated. Thank you very much Jarod Todd

01-01-2015, 05:16 AM	#2
ScottieB Registered User Join Date: Dec 2014 Location: Gatesville, Tx Posts: 55	Re: Need advice on larger tires for my 70 c10 I have some 275 55 r20... I had to add 1.5" spacers so they wouldn't rub the front. You could go wider, especially if your rims stick out like they should. I'm not a tire guy, this setup just worked for me __________________ 69' Chevy C10 383 Stroker / TH400 275 55 r20 Wheels Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=654751

01-01-2015, 05:24 AM	#3
JTknives Registered User Join Date: May 2014 Location: Prove, Utah Posts: 9	Re: Need advice on larger tires for my 70 c10 With out the spacer how bad was the rubbing. Was it just while turning sharp? My tires right now are 30" tall and 9.25" wide. And there looks to be oddles of room around them considering the tire I want is 31.6" tall and 10.4" wide.

01-01-2015, 05:42 AM	#4
ScottieB Registered User Join Date: Dec 2014 Location: Gatesville, Tx Posts: 55	Re: Need advice on larger tires for my 70 c10 no spacers at all ... the rears were stuck onto the bed frame the fronts rubbed anything more than 1 turn of wheel (my wheel turns 1.5-2 turns i think). The adapters were only $102 shipped from ebay for 1.5" ... but they make a 2" as well (for 6 lug 7/16 - which is what I got) picture: http://67-72chevytrucks.com/vboard/a...ictureid=20750 ebay 1.5": http://www.ebay.com/itm/321562953024 ebay 2": http://www.ebay.com/itm/251691622370 __________________ 69' Chevy C10 383 Stroker / TH400 275 55 r20 Wheels Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=654751 Last edited by ScottieB; 01-01-2015 at 05:49 AM.

01-01-2015, 05:50 AM	#5
JTknives Registered User Join Date: May 2014 Location: Prove, Utah Posts: 9	Re: Need advice on larger tires for my 70 c10 What's the back spacing on your wheels. I'm stock so I think I'm at 4" I can feel about a 2" gap or more between my current tire and the truck so with my current wheels adding just over an inch would not be a problem.

01-01-2015, 05:53 AM	#6
ScottieB Registered User Join Date: Dec 2014 Location: Gatesville, Tx Posts: 55	Re: Need advice on larger tires for my 70 c10 I have no clue, i'm not a wheels guy. __________________ 69' Chevy C10 383 Stroker / TH400 275 55 r20 Wheels Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=654751

01-01-2015, 11:18 AM	#7
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,723	Re: Need advice on larger tires for my 70 c10 Currently my 69 short step has the original 15x7 wheels off my Jimmy on it with 265 75 15 radials on it. They don't rub anywhere but the bed if you take a corner faster than the truck wnts to corner... Next week it gets a 5 lug swap and 4.5"/6" lowering job along with 235 55 17 fronts on 17x8 wheels and 275 55 17 rears on 17x 9 wheels. I've done my best math so I hope this all fits... __________________ 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

01-01-2015, 11:56 AM	#8
javelinmania Registered User Join Date: Sep 2014 Location: Lexington, SC Posts: 127	Re: Need advice on larger tires for my 70 c10 Here's what I did, on Ebay, I purchased a set of Take Off Wheels - 17" Chevrolet Suburban, Avalanche, Tahoe - Hollander Number 5299 and then put Michelin LTX M/S2 P245/70R17 on them. Looks nice. I did not use the Wheel Centers as they are kind of funky and you have plastic covering the lug nuts and can't tighten them very well. I will look for a center insert to fit once I take the time to measure the width of the hole and figure out what's needed (Flat insert or one that sticks out) since I'm upgrading the suspension. I did put on 1.5" spacers so that the wheels line up correctly. The offset is definitely different than the original wheels.



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