Tire dilema. Need some help. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

lyrikz · 09-28-2007, 10:53 AM

Currently my truck is running 235/75/15 now. I have a set of rallys that are 15x10. The tires on the rallys are 295/50/15. The rallys sit about 2 inches lower then the 235s on there now. That means when im on the freeway im going to be revving much higher along with being 2 inches lower.

I cant seem to find a tire that can get me the overall diameter that i need. I need a minimum of a 29" diameter tire to maintain what i have now. Not many tires want to fit over a 15x10 inch rim. The 295/50/15s have an overall diameter of 28"/ But when you put them on a 10 inch wide rim, that changes quite a bit...ahaha... I dont want to sell my rallys...

Any suggestions on tire size?? Its going on a 71 stepside.... Im just looking for some advice.

SCOTI · 09-28-2007, 11:40 AM

Try & find a set of BFG's in 285-70-15. They'll work well on the 10's & have the height your wanting. The problem is it's a discontinued size so it will take some searching (but they're still out there).

lyrikz · 09-28-2007, 11:44 AM

Quote:

Originally Posted by SCOTI

Try & find a set of BFG's in 285-70-15. They'll work well on the 10's & have the height your wanting. The problem is it's a discontinued size so it will take some searching (but they're still out there).

235/75/15 off the rim is 29"
295/50/15 off the rim is 28"

Well, you put those 295/50/15 on a ten inch rim and that 28" is a litlte smaller...

Id say its about 1.5" overall difference... THe truck seems to sit about 2 inches lower then it did.. I will get pics on here. I will look for a 285/70 right now....

Brad · 09-28-2007, 11:47 AM

Check The Tire Rack. www.tirerack.com

lyrikz · 09-28-2007, 11:54 AM

Quote:

Originally Posted by Brad

Check The Tire Rack. www.tirerack.com

Well, i work for a goodyear store as a service manager... No one has anything for a 285/70/15. when i say no one, i mean
cooper tires
tire rack
discount tire
goodyear
LTR
republic
dunlop
pacemark
bluestreak.

HAHAH... Im going to just put the tires on and drive it.. The main concern is with the 235/75/15s currently on the vehicle, when on the freeway doing 65 im PEGGED out..... With these 295/50's on there i think doing 55 is going to be pushing it.

67_C-30 · 09-28-2007, 01:15 PM

255/70/15's are what you need. That's I used to run them on my '78 GMC. They are 29.1" on a 8" rim, but I have run the on 10's, and they do fine. The tread width is around 10" so they are going to bow in a little. There just isn't a lot of wide tires in a 15" that measures much taller than 28".

SCOTI · 09-28-2007, 01:27 PM

Quote:

Originally Posted by 67_C-30

255/70/15's are what you need. That's I used to run them on my '78 GMC. They are 29.1" on a 8" rim, but I have run the on 10's, and they do fine. The tread width is around 10" so they are going to bow in a little. There just isn't a lot of wide tires in a 15" that measures much taller than 28".

The 255-70's would be ideal heighth wise but that's stretching it on a 10" wheel. Will it fit? Sure it will, but it's not ideal. IMO, it would look better than a 295-50.

Does it have to be a 10" rear wheel? Run 8" wheels out back w/the 255-70's & you'll save some RPM's on the hwy & it will look good too.

67_C-30 · 09-28-2007, 01:30 PM

Quote:

Originally Posted by SCOTI

The 255-70's would be ideal heighth wise but that's stretching it on a 10" wheel. Will it fit? Sure it will, but it's not ideal. IMO, it would look better than a 295-50.

Does it have to be a 10" rear wheel? Run 8" wheels out back w/the 255-70's & you'll save some RPM's on the hwy & it will look good too.

I agree it's pushing it on a 10" rim, but he already has the 10" rallys and he wants to use them.

lyrikz · 09-28-2007, 01:43 PM

Quote:

Originally Posted by SCOTI

The 255-70's would be ideal heighth wise but that's stretching it on a 10" wheel. Will it fit? Sure it will, but it's not ideal. IMO, it would look better than a 295-50.

Does it have to be a 10" rear wheel? Run 8" wheels out back w/the 255-70's & you'll save some RPM's on the hwy & it will look good too.

Better then the 295 50?? Is that possible. Its the widest coolest looking thing ever. ahaha..

I have to go with the 10" rears. Thats what i have and i need to make that work... As a kid i have always wanted deep rallys on my classic if i ever got one and i finally got one...

I think the 265/70/15's will be even better... Thank you... I might have a set of those bad boys in stock.

Custom 68 · 09-28-2007, 06:20 PM

what is the widest you could go on an 8 inch wheel I am running 275 60 15 now
sorry to jack the thread

Dave

**CC69Rat** · 02-02-2012, 09:24 PM

Yeah, this one is old !

http://www.jegs.com/i/Coker-Tire/257...ductId=1123896

In stock and ready to go.

09-28-2007, 10:53 AM	#1
lyrikz PITbut Join Date: Sep 2007 Location: monroe washington Posts: 3,052	Tire dilema. Need some help. Currently my truck is running 235/75/15 now. I have a set of rallys that are 15x10. The tires on the rallys are 295/50/15. The rallys sit about 2 inches lower then the 235s on there now. That means when im on the freeway im going to be revving much higher along with being 2 inches lower. I cant seem to find a tire that can get me the overall diameter that i need. I need a minimum of a 29" diameter tire to maintain what i have now. Not many tires want to fit over a 15x10 inch rim. The 295/50/15s have an overall diameter of 28"/ But when you put them on a 10 inch wide rim, that changes quite a bit...ahaha... I dont want to sell my rallys... Any suggestions on tire size?? Its going on a 71 stepside.... Im just looking for some advice.

09-28-2007, 11:40 AM	#2
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,940	Re: Tire dilema. Need some help. Try & find a set of BFG's in 285-70-15. They'll work well on the 10's & have the height your wanting. The problem is it's a discontinued size so it will take some searching (but they're still out there). __________________ 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.* Last edited by SCOTI; 09-28-2007 at 11:40 AM.

09-28-2007, 11:47 AM	#4
Brad Out of the carpool lane. Join Date: Jan 2000 Location: Clark Co, WA Posts: 5,673	Re: Tire dilema. Need some help. Check The Tire Rack. www.tirerack.com __________________ 1968 C-10 SWB, 5.7 Vortec/700R4/3.73 posi, Torch Red 1968 Camaro, 250/Powerglide, all original (No, I'm not gonna drop a 350 in it!...Jeez!) 2000 Honda VFR in the faster yellow! 2008 Husqvarna TE-610 1967 C-10 SWB 'Six Appeal'-Gone but not forgotten...

09-28-2007, 01:15 PM	#6
67_C-30 I have a radical idea! Join Date: Jan 2005 Location: Sweet Home Alabama! Posts: 6,513	Re: Tire dilema. Need some help. 255/70/15's are what you need. That's I used to run them on my '78 GMC. They are 29.1" on a 8" rim, but I have run the on 10's, and they do fine. The tread width is around 10" so they are going to bow in a little. There just isn't a lot of wide tires in a 15" that measures much taller than 28". __________________ '67 C-30 Dually Pickup 6.2 Turbo Diesel, NP435 ‘72 C-10 SWB , 350 4bbl, TH350 '69 C-10 SWB , 250 L6, 3 OTT '69 GMC C3500, dump truck, 351 V6, NP435 '84 M1009 CUCV Military Blazer 67 C-30 Turbodiesel build thread http://67-72chevytrucks.com/vboard/s...d.php?t=254096 My trucks http://s226.photobucket.com/albums/d...ediafilter=all Member of the 1-Ton Club!

09-28-2007, 06:20 PM	#10
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,928	Re: Tire dilema. Need some help. what is the widest you could go on an 8 inch wheel I am running 275 60 15 now sorry to jack the thread Dave __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

02-02-2012, 09:24 PM	#11
CC69Rat Senior Member Join Date: Jan 2011 Location: Chattanooga TN Posts: 6,207	Re: Tire dilema. Need some help. Yeah, this one is old ! http://www.jegs.com/i/Coker-Tire/257...ductId=1123896 In stock and ready to go. __________________ Chad 1967 C10 SWB - Project Savannah - 6.0/4L80 Currently underway 1968 C10 SWB - TOTY 2018, 50th Anniversary Tribute Project * Sold * Pride and Joy 1986 Silverado Short Fleet - Scarlet Sold 1985 Silverado Short Fleet Sold 2022 Jeep Gladiator Mojave 2001 Jeep Cherokee XJ 4x4 - Lifted, Built 1992 Jeep Cherokee XJ 4x4 - Lifted 2013 Honda Accord EX-L v6 Coupe 6spd (wife's ride)



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