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#1 |
Registered User
Join Date: Mar 2010
Location: Rhode Island
Posts: 10
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Maximum Rear Tire Size?
Was wondering what the maximum rear tire with you can fit with out tubbing the wheel wells. I have a 69 GMC with leaf springs and a 4" drop in the rear, I bolted on a 10" wide 15" rim with 4" backspace and measured the clearences. I'm thinking I can fit a 315/60/R15 drag slick. Does anyone else have this size on the rear of their truck?
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#2 |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Re: Maximum Rear Tire Size?
I had a 295/50/15 on my 72 GMC with leafs and didn't have problems. I don't know the backspacing on the wheels (probably pretty close to 4"). The truck was lowered a little too.
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#3 |
Active Member
Join Date: Apr 2005
Location: Miami, Florida
Posts: 286
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Re: Maximum Rear Tire Size?
With a 4" backspace, same as stock, you'll have approximately 6" on the front side of the wheel and 4" on the back side. The wheels might be sticking out a bit with that offset, donno.
It's not so much the frame/ inner wheels well that would be an issue but the outer fender of the wheel well where it might rub, a 315/60-15 is right on 30" in diameter the height should not be a problem at all. However the Section width is right around 13" and the tread is just about 12", that's a nice fat tire. I would take a wheel off of the truck and simply measure the distance between the inner and outer wheel well and the frame and the outer wheel well/ fender. That way you will know exactly what your working with.
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"The Great State of Florida" |
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#4 |
Registered User
Join Date: Mar 2010
Location: Rhode Island
Posts: 10
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Re: Maximum Rear Tire Size?
From my measurements I decided to go ahead and get the 315/60/R15 MT Drag Radials, boy am I glad I did! They fit like a glove and look great. Plenty of clearence on the wheel well side and more than enough on the fender side. I will post some picts ASAP.
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#5 |
big guy
![]() Join Date: Jun 2008
Location: mass
Posts: 820
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Re: Maximum Rear Tire Size?
Can't wait to see them!
Ray |
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#6 |
Registered User
Join Date: Sep 2002
Location: DFW Texas
Posts: 2,270
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Re: Maximum Rear Tire Size?
I have run the 315/60 on 2 of my trucks in the past and they look GOOD!
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#7 |
Charlie Daniels w/ a Tq Wrench
Join Date: May 2009
Location: Statesville, NC
Posts: 1,570
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Re: Maximum Rear Tire Size?
Did you ever get pictures?
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ΜΟΛΩΝ ΛΑΒΕ 67 C10 Shortbed "Great Grandpa's Truck" I6 3 on the Tree 71k original miles 5.3 swap in the works69 K5 Blazer-Family Beach Cruiser Project 78 K30 Dually Semi-Retired Fire Truck 350/SM465 35"s SOLD01 2500HD ECSB 6.0 4x4 5.13's 8" lift 38"s |
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#8 |
Registered User
Join Date: Apr 2008
Location: Houston, TX
Posts: 247
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Re: Maximum Rear Tire Size?
please post some pics.... im looking into getting the same tire...
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1971 C-10 SWB - LS swap w/4L60e, 20x8.5front 20x12rear, 1968 C-10 SWB - 454 BB TH350 -Gone! |
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#9 |
Registered User
Join Date: Mar 2010
Location: Rhode Island
Posts: 10
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Re: Maximum Rear Tire Size?
Sorry it took so long, here are the picts!
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#10 |
Registered User
Join Date: Aug 2010
Location: Tennessee
Posts: 26
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Re: Maximum Rear Tire Size?
looks great!
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'68 C10 SWB "Purple Nurple" |
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#11 |
Registered User
Join Date: Jul 2011
Location: Christchurch
Posts: 16
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Re: Maximum Rear Tire Size?
looks good, what size are you running on the front?
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#12 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Maximum Rear Tire Size?
10" wheel,right? Looks awesome.
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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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