Widest rear tire 4/5 drop - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fastnloud · 01-05-2013, 10:47 PM

I'll probably do a 4/5 drop on my 82 Sierra.

Anyone know if I could fit a 29x15.50x15 on the rear without any mods to the frame or wheel wells?

I'm gonna be using a 15x10 wheel with 5 inch backspacing on the back.

Thanks guys.

Malo83 · 01-06-2013, 01:40 AM

Thats pretty much the norm for that tire/wheel combo

fastnloud · 01-06-2013, 01:50 AM

Quote:

Originally Posted by Malo83

Thats pretty much the norm for that tire/wheel combo

Thanks. I would love to see some pics of that size on a square.

I'm looking at getting these
http://www.summitracing.com/parts/mtt-6558/overview/

but it says they require a tube, I don't know anything about that.

fastnloud · 01-06-2013, 01:58 AM

Anyone know where i can find a wider selection of that tire size?

Or is it only MT and Hoosier who make them?

74 stepside · 01-06-2013, 02:45 AM

A 15.50 tire should be used on a 12" wide wheel. For a 10" Id go with a 12.50. This is a 315/60r15 which translates to 30"x13.50 tire on a 15x10 wheel with 5" backspace. This is as wide as you can go without cutting the wheeltub. I still had to trim the edge of the fender lip do to the sidewall of the tire. This is also with a 5" rear drop. Your 15.50 tire will require tubbing no doubt about it.

fastnloud · 01-06-2013, 02:26 PM

Your truck looks great, if i go with a 10 inch wheel I'll probably do 315/60 and trim the fender lip, that was my original plan anyway. Whats your front tires, wheels, and drop? Your overall stance is great, that's what i'm aiming for.

So, 15:50 will require tubbing no matter what backspacing of the wheel, correct?

74 stepside · 01-06-2013, 09:39 PM

Heres a side view. I lowered it more right after this pic then tore the truck apart to rebuild it. Just need to finish my stepside 1st, then this truck gets put back on the road.

74 stepside · 01-06-2013, 09:33 PM

Thanks and yes you are correct. 15.50s will need wheeltubs widened. Fronts are 215/70r15 on 15x7s. In that pic it had a 2 1/2" drop spindle and a cut coil.

fastnloud · 01-06-2013, 09:51 PM

Alright, thanks for the info

I guess first of all I've got to figure out what to do with my headers, before I lower my truck. I may need more clearance than I have now.

74 stepside · 01-07-2013, 09:15 PM

If you have full length hedders then swap them out for 3/4 length. Gives alot more clearance.

fastnloud · 01-08-2013, 02:00 AM

Quote:

Originally Posted by 74 stepside

If you have full length hedders then swap them out for 3/4 length. Gives alot more clearance.

Yeah, I have long tubes. I haven't seen many 3/4 lengths available for an SBC. Any certain brands you know of?

Thanks.

74 stepside · 01-08-2013, 02:10 AM

Quote:

Originally Posted by fastnloud

Yeah, I have long tubes. I haven't seen many 3/4 lengths available for an SBC. Any certain brands you know of?

Thanks.

Summit carries a few. Hedman, Hooker, etc.

SCOTI · 01-08-2013, 09:29 AM

Quote:

Originally Posted by fastnloud

Yeah, I have long tubes. I haven't seen many 3/4 lengths available for an SBC. Any certain brands you know of?

Thanks.

Chevelle headers work & also come in the 3/4 length variety.

fastnloud · 01-08-2013, 09:11 PM

Alright, thanks guys. I've been trying to figure out if there are any longs tubes that kinda tuck up near the frame. Anyone know of any?

KQQL IT · 01-10-2013, 02:33 AM

Quote:

Originally Posted by fastnloud

Alright, thanks guys. I've been trying to figure out if there are any longs tubes that kinda tuck up near the frame. Anyone know of any?

http://m.summitracing.com/parts/dou-d310/media
worked with dart 200cc angle plugs

Posted via Mobile Device

fastnloud · 01-10-2013, 12:18 AM

I found some Patriot Clipster headers, that should fit. They are mid length.
http://www.summitracing.com/parts/pt...model/chevelle

I just hope they would work with my Sportsman II Heads.

fastnloud · 01-10-2013, 02:36 PM

Alright, thanks for the info.

SCOTI · 01-10-2013, 02:47 PM

Ouch... $630+

INSIDIOUS '86 · 01-10-2013, 03:15 PM

Quote:

Originally Posted by SCOTI

Ouch... $630+

I wonder if calling Doug's and buying uncoated ones will be much cheaper, I know it's usually 200+ for ceramic coating
Posted via Mobile Device

KQQL IT · 01-10-2013, 10:52 PM

Quote:

Originally Posted by INSIDIOUS '86

I wonder if calling Doug's and buying uncoated ones will be much cheaper, I know it's usually 200+ for ceramic coating
Posted via Mobile Device

About 200$ cheaper. And yes ouch but had there headers on my 77 never chased header leaks daily driven for 10 years.
Posted via Mobile Device

fastnloud · 01-10-2013, 05:47 PM

I think I will go ahead and lower my truck with the long tubes on it and see if it works out ok, if it doesn't I'll get some patriot clippster mid lengths.

01-05-2013, 10:47 PM	#1
fastnloud Registered User Join Date: Dec 2012 Location: USA Posts: 209	Widest rear tire 4/5 drop I'll probably do a 4/5 drop on my 82 Sierra. Anyone know if I could fit a 29x15.50x15 on the rear without any mods to the frame or wheel wells? I'm gonna be using a 15x10 wheel with 5 inch backspacing on the back. Thanks guys.

01-06-2013, 01:40 AM	#2
Malo83 Cruzzzn' Vet Join Date: Jan 2005 Location: Porterville,Ca. Posts: 1,918	Re: Widest rear tire 4/5 drop Thats pretty much the norm for that tire/wheel combo

01-06-2013, 01:58 AM	#4
fastnloud Registered User Join Date: Dec 2012 Location: USA Posts: 209	Re: Widest rear tire 4/5 drop Anyone know where i can find a wider selection of that tire size? Or is it only MT and Hoosier who make them?

01-06-2013, 02:45 AM	#5
74 stepside Registered User Join Date: Oct 2009 Location: SoCal Posts: 815	Re: Widest rear tire 4/5 drop A 15.50 tire should be used on a 12" wide wheel. For a 10" Id go with a 12.50. This is a 315/60r15 which translates to 30"x13.50 tire on a 15x10 wheel with 5" backspace. This is as wide as you can go without cutting the wheeltub. I still had to trim the edge of the fender lip do to the sidewall of the tire. This is also with a 5" rear drop. Your 15.50 tire will require tubbing no doubt about it. Attached Images

01-06-2013, 02:26 PM	#6
fastnloud Registered User Join Date: Dec 2012 Location: USA Posts: 209	Re: Widest rear tire 4/5 drop Your truck looks great, if i go with a 10 inch wheel I'll probably do 315/60 and trim the fender lip, that was my original plan anyway. Whats your front tires, wheels, and drop? Your overall stance is great, that's what i'm aiming for. So, 15:50 will require tubbing no matter what backspacing of the wheel, correct?

01-06-2013, 09:39 PM	#7
74 stepside Registered User Join Date: Oct 2009 Location: SoCal Posts: 815	Re: Widest rear tire 4/5 drop Heres a side view. I lowered it more right after this pic then tore the truck apart to rebuild it. Just need to finish my stepside 1st, then this truck gets put back on the road. Attached Images

01-06-2013, 09:33 PM	#8
74 stepside Registered User Join Date: Oct 2009 Location: SoCal Posts: 815	Re: Widest rear tire 4/5 drop Thanks and yes you are correct. 15.50s will need wheeltubs widened. Fronts are 215/70r15 on 15x7s. In that pic it had a 2 1/2" drop spindle and a cut coil. Last edited by 74 stepside; 01-06-2013 at 09:40 PM.

01-06-2013, 09:51 PM	#9
fastnloud Registered User Join Date: Dec 2012 Location: USA Posts: 209	Re: Widest rear tire 4/5 drop Alright, thanks for the info I guess first of all I've got to figure out what to do with my headers, before I lower my truck. I may need more clearance than I have now. Last edited by fastnloud; 01-06-2013 at 09:58 PM.

01-07-2013, 09:15 PM	#10
74 stepside Registered User Join Date: Oct 2009 Location: SoCal Posts: 815	Re: Widest rear tire 4/5 drop If you have full length hedders then swap them out for 3/4 length. Gives alot more clearance.

01-08-2013, 09:11 PM	#14
fastnloud Registered User Join Date: Dec 2012 Location: USA Posts: 209	Re: Widest rear tire 4/5 drop Alright, thanks guys. I've been trying to figure out if there are any longs tubes that kinda tuck up near the frame. Anyone know of any?

01-10-2013, 12:18 AM	#16
fastnloud Registered User Join Date: Dec 2012 Location: USA Posts: 209	Re: Widest rear tire 4/5 drop I found some Patriot Clipster headers, that should fit. They are mid length. http://www.summitracing.com/parts/pt...model/chevelle I just hope they would work with my Sportsman II Heads.

01-10-2013, 02:36 PM	#17
fastnloud Registered User Join Date: Dec 2012 Location: USA Posts: 209	Re: Widest rear tire 4/5 drop Alright, thanks for the info.

01-10-2013, 02:47 PM	#18
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,080	Re: Widest rear tire 4/5 drop Ouch... $630+ __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

01-10-2013, 05:47 PM	#21
fastnloud Registered User Join Date: Dec 2012 Location: USA Posts: 209	Re: Widest rear tire 4/5 drop I think I will go ahead and lower my truck with the long tubes on it and see if it works out ok, if it doesn't I'll get some patriot clippster mid lengths.



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