315/70r15 on my truck - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Super Chevy · 03-30-2002, 12:14 AM

i was thinking about getting some Truck Comp T/A's 315/70r15 for my truck http://www.bfgoodrichtires.com/catal...ck_ta_hr4.html they say on there site rim size 8-10" i got 8.5's and was woundering if anyone hs pics of 315's and do i have to extend my wheelwells?

thnx
72.

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www.superchevy.cjb.net

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1972 Custom Deluxe/10
mild 350: Hedmen headers and dual 3" exhaust ,harlin sharp roller rockers ,MSD ingnition ,Mallory dual point K&N 14x4 air cleaner ,Holley 600 4bbl ,Edelbrok Proformer intake
TH350 with lock up verter and 1600 stall
American Racing 15x8.5 and michelan 28x8.55

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Bowtie or nothing!

neonlarry · 03-30-2002, 12:39 AM

I looked at them too, but I don't think they would fit. I may be wrong, but I think anything wider than a 285 will stick out past the fender. The widest tire I have seen on a 67-72 was a 295/50-15, and it stuck out about 2''. I may be wrong, but I think a set of radial t/a s would be better. Those tires are so wide I am not sure what you would put them on, but anyway that's just my opinion.

Super Chevy · 03-30-2002, 12:45 AM

ive seen someone on this board that had a blue truck (cant remember the name?) that had 315's and all he had to do was extend the wheelwells,hopefully he will read this

72.

neonlarry · 03-30-2002, 01:19 AM

If you don't mind extending the wheelwells they would probably work. I wasn't saying you shouldn't use them, just that they were kind of wide for a stock truck. If you did use them, what would you put on the front? There is a 285/65 I think, but any of the other sizes would be about 4'' smaller than the 315s.

**70cst** · 03-30-2002, 09:38 AM

I have 275x60x15 (15x8" rims) Goodrich on my truck without stickout.

Project1970 · 03-30-2002, 12:27 PM

I've seen 295s and 305s on trucks without any body mods and both stuck out a little from the truck...

On mine, 275/60-15s fill it up nicely out back with '80s stock 4x4 rims, 15x8 I believe. Front is 235/60-15 (or 245? dang, can never remember...the Suburban uses one, my truck uses the other...) because the disc conversion I have from Early Classic shoves the wheels out a bit more than stock, any bigger rubs on the fender on semi-big bumps. Same rims.

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Project 1970 - soon to be seen at http://milhouse.treylis.org:81/

Project1970 · 03-30-2002, 12:31 PM

Oh, and that Sport Truck T/A looks interesting...how long have those been out? Anyone used 'em? I might be needing replacements for the Radial T/As soon...

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Project 1970 - soon to be seen at http://milhouse.treylis.org:81/

72chevyLWB · 03-30-2002, 12:34 PM

315/70's are alot taller than a 295/50 and are also narrower because of the 70 series. 295's are recommended for a 9.5 rim aren't they?

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72 Chevy C/10
87 Chevy Silverado 4X4
www.geocities.com/chevylwb/chevylwb.html
Aberdeen South Dakota

SCOTI · 03-30-2002, 03:47 PM

A 315mm tire is wider than a 295mm tire irreguardless of aspect ratio. The aspect ratio (or 70 in 315/70/15) tells you the tire sidewall height is 70% of 315mm. It's a simple formula:
315 div. by 25.4= 12.4"W
315 x 70%= 220.5
220.5/25.4= 8.68
8.68 x 2 + 15= 32.3"H or approx 32+/- depending on wheel width.

ryan68 · 03-30-2002, 05:20 PM

I have seen a guy that tucked 315's by special ordering rims with the backspacing to within 1/8". And he notched the piece that holds the outer bedside to the inner wheel well a little.

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68 Chevy CST (327,TH400) 3/5 drop
71 Suburban 4x4 (350,TH350) 33's
Check out my web site!!! http://www.geocities.com/cst68chevy/

Super Chevy · 03-30-2002, 05:35 PM

yea,i looked into the reg Comp T/A's but then I'd have to order a 10" rim,the added sidewall on these allow me to run my 8.5 rim,the tire its self is 32x12 ,but BFG is known for over measuring,so its probably 31x11.5 or so

72.

03-30-2002, 12:14 AM	#1
Super Chevy Registered User Join Date: Feb 2001 Location: Ohio Posts: 1,025	315/70r15 on my truck i was thinking about getting some Truck Comp T/A's 315/70r15 for my truck http://www.bfgoodrichtires.com/catal...ck_ta_hr4.html they say on there site rim size 8-10" i got 8.5's and was woundering if anyone hs pics of 315's and do i have to extend my wheelwells? thnx 72. ------------------ www.superchevy.cjb.net ---------------------- 1972 Custom Deluxe/10 mild 350: Hedmen headers and dual 3" exhaust ,harlin sharp roller rockers ,MSD ingnition ,Mallory dual point K&N 14x4 air cleaner ,Holley 600 4bbl ,Edelbrok Proformer intake TH350 with lock up verter and 1600 stall American Racing 15x8.5 and michelan 28x8.55 CHEVY makes HORSEpower,while ford makes ponypower Bowtie or nothing!

03-30-2002, 12:39 AM	#2
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	I looked at them too, but I don't think they would fit. I may be wrong, but I think anything wider than a 285 will stick out past the fender. The widest tire I have seen on a 67-72 was a 295/50-15, and it stuck out about 2''. I may be wrong, but I think a set of radial t/a s would be better. Those tires are so wide I am not sure what you would put them on, but anyway that's just my opinion. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

03-30-2002, 01:19 AM	#4
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	If you don't mind extending the wheelwells they would probably work. I wasn't saying you shouldn't use them, just that they were kind of wide for a stock truck. If you did use them, what would you put on the front? There is a 285/65 I think, but any of the other sizes would be about 4'' smaller than the 315s. __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

03-30-2002, 09:38 AM	#5
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	I have 275x60x15 (15x8" rims) Goodrich on my truck without stickout. __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

03-30-2002, 12:27 PM	#6
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	I've seen 295s and 305s on trucks without any body mods and both stuck out a little from the truck... On mine, 275/60-15s fill it up nicely out back with '80s stock 4x4 rims, 15x8 I believe. Front is 235/60-15 (or 245? dang, can never remember...the Suburban uses one, my truck uses the other...) because the disc conversion I have from Early Classic shoves the wheels out a bit more than stock, any bigger rubs on the fender on semi-big bumps. Same rims. ------------------ Project 1970 - soon to be seen at http://milhouse.treylis.org:81/ __________________ Project1970 - LS1 Swap Complete!

03-30-2002, 12:45 AM	#3
Super Chevy Registered User Join Date: Feb 2001 Location: Ohio Posts: 1,025	ive seen someone on this board that had a blue truck (cant remember the name?) that had 315's and all he had to do was extend the wheelwells,hopefully he will read this 72.

03-30-2002, 12:31 PM	#7
Project1970 14.1 @ 96MPH Join Date: Jul 2001 Location: Mesa, AZ Posts: 2,811	Oh, and that Sport Truck T/A looks interesting...how long have those been out? Anyone used 'em? I might be needing replacements for the Radial T/As soon... ------------------ Project 1970 - soon to be seen at http://milhouse.treylis.org:81/ __________________ Project1970 - LS1 Swap Complete!

03-30-2002, 12:34 PM	#8
72chevyLWB Got 20's???? Join Date: Oct 2001 Location: Aberdeen SD Posts: 1,451	315/70's are alot taller than a 295/50 and are also narrower because of the 70 series. 295's are recommended for a 9.5 rim aren't they? ------------------ 72 Chevy C/10 87 Chevy Silverado 4X4 www.geocities.com/chevylwb/chevylwb.html Aberdeen South Dakota __________________ 99 Silverado Ex-Cab 2wd, Bagged&WhippleCharged 02 Sierra Ex-Cab 4wd 2500 HD The 72 went down the road.

03-30-2002, 03:47 PM	#9
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	A 315mm tire is wider than a 295mm tire irreguardless of aspect ratio. The aspect ratio (or 70 in 315/70/15) tells you the tire sidewall height is 70% of 315mm. It's a simple formula: 315 div. by 25.4= 12.4"W 315 x 70%= 220.5 220.5/25.4= 8.68 8.68 x 2 + 15= 32.3"H or approx 32+/- depending on wheel width. __________________ 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.*

03-30-2002, 05:20 PM	#10
ryan68 Certified Chevy Man Join Date: Jan 2000 Location: Tucson, Arizona, United States Posts: 2,053	I have seen a guy that tucked 315's by special ordering rims with the backspacing to within 1/8". And he notched the piece that holds the outer bedside to the inner wheel well a little. ------------------ 68 Chevy CST (327,TH400) 3/5 drop 71 Suburban 4x4 (350,TH350) 33's Check out my web site!!! http://www.geocities.com/cst68chevy/ __________________ 68 Chevy CST (327,TH400) 3/5 drop lots of fun stuff 71 Suburban 4x4 (350,TH350) 7" lift 37's, D44/14 bolt and other sorts of goodies, lockers front and rear, flexes 40", 895 RTI score Check out my web site!!! http://www.geocities.com/cst68chevy/

03-30-2002, 05:35 PM	#11
Super Chevy Registered User Join Date: Feb 2001 Location: Ohio Posts: 1,025	yea,i looked into the reg Comp T/A's but then I'd have to order a 10" rim,the added sidewall on these allow me to run my 8.5 rim,the tire its self is 32x12 ,but BFG is known for over measuring,so its probably 31x11.5 or so 72.



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