15" rallye - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70jnktrk · 11-17-2008, 02:20 PM

I am thinking about getting a set of rallyes for my truck..15x8 4inch backspace for the front and 15x10 5 inch backspace for the rear of my 70 1/2 lwb coil springs.. The 5 inch backspace should not cause any problems that I can see..any thoughts would be appreciated...the photo is with 7" rims front and 8"rims rear..thanks

thirdstreettito · 11-17-2008, 02:22 PM

I doubt it would cause a problem, but make sure by measuring and know how big a tire you are gonna run.

70jnktrk · 11-17-2008, 02:28 PM

I am wanting to run the tires I have now..275x60 rear and 255x60 front..thanks

ulakovic22 · 11-17-2008, 02:27 PM

I don't think it will cause any problems either. If you wanted you could probably run a bigger rim than that. A quick way to guess would be to measure from the mounting pad to the frame rails. With no offset that should be your backspace.

ulakovic22 · 11-17-2008, 02:32 PM

That should work well and look really nice. The larger wheels will push out a 1/2 inch in front and an inch in back.

thirdstreettito · 11-17-2008, 02:38 PM

Most likely tires for an 8" wheel will not work for a 10" wheel. Just remember, measure twice, fit once.

68GMCCustom · 11-17-2008, 03:03 PM

I'm running stock 8" rallys with 275/60-15 BFG's all 'round. I would like to go bigger tho in back with 10" rally's but BFG doesn't make 305/60-15's in the Radial T/A so I'll wait until my other chassis is ready with a 17x8/18x10 stagger.

70jnktrk · 11-17-2008, 03:29 PM

68gmc.. truck looks great...I will check with my tire guy but am hoping the 275/60 will work on the 10 inch rim..thanks to all

grancuda · 11-17-2008, 04:20 PM

275/60R15 work with 10" wheels, that is what I am running all the way around on my '72 LWB GMC.

70jnktrk · 11-18-2008, 08:23 AM

Quote:

Originally Posted by grancuda

275/60R15 work with 10" wheels, that is what I am running all the way around on my '72 LWB GMC.

Thanks much for the input...

**lolife99** · 11-18-2008, 08:33 AM

Here's my 15x10's with 5" BS. These are also 275/60-15's.

70jnktrk · 11-18-2008, 08:39 AM

Lo..looks great and all these photos really help. What width are you running on the front?

**lolife99** · 11-18-2008, 09:38 AM

I'm running a 7" ralley with 215/70-15's.

11-17-2008, 02:20 PM	#1
70jnktrk Registered User Join Date: Jan 2003 Location: arizona Posts: 213	15" rallye I am thinking about getting a set of rallyes for my truck..15x8 4inch backspace for the front and 15x10 5 inch backspace for the rear of my 70 1/2 lwb coil springs.. The 5 inch backspace should not cause any problems that I can see..any thoughts would be appreciated...the photo is with 7" rims front and 8"rims rear..thanks

11-17-2008, 02:22 PM	#2
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: 15" rallye I doubt it would cause a problem, but make sure by measuring and know how big a tire you are gonna run. __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck

11-17-2008, 02:28 PM	#3
70jnktrk Registered User Join Date: Jan 2003 Location: arizona Posts: 213	Re: 15" rallye I am wanting to run the tires I have now..275x60 rear and 255x60 front..thanks

11-17-2008, 02:27 PM	#4
ulakovic22 Registered User Join Date: Aug 2008 Location: Lantana, TX Posts: 419	Re: 15" rallye I don't think it will cause any problems either. If you wanted you could probably run a bigger rim than that. A quick way to guess would be to measure from the mounting pad to the frame rails. With no offset that should be your backspace.

11-17-2008, 02:32 PM	#5
ulakovic22 Registered User Join Date: Aug 2008 Location: Lantana, TX Posts: 419	Re: 15" rallye That should work well and look really nice. The larger wheels will push out a 1/2 inch in front and an inch in back.

11-17-2008, 02:38 PM	#6
thirdstreettito Resident of Here Join Date: May 2008 Location: Wesley Chapel, FL, USA Posts: 7,716	Re: 15" rallye Most likely tires for an 8" wheel will not work for a 10" wheel. Just remember, measure twice, fit once. __________________ ~Bradley~ 2004 Black GTO LS2/T56 too much to list Miss having a truck

11-17-2008, 03:03 PM	#7
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: 15" rallye I'm running stock 8" rallys with 275/60-15 BFG's all 'round. I would like to go bigger tho in back with 10" rally's but BFG doesn't make 305/60-15's in the Radial T/A so I'll wait until my other chassis is ready with a 17x8/18x10 stagger. __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

11-17-2008, 03:29 PM	#8
70jnktrk Registered User Join Date: Jan 2003 Location: arizona Posts: 213	Re: 15" rallye 68gmc.. truck looks great...I will check with my tire guy but am hoping the 275/60 will work on the 10 inch rim..thanks to all

11-17-2008, 04:20 PM	#9
grancuda Registered User Join Date: Nov 2007 Location: Central OK Posts: 396	Re: 15" rallye 275/60R15 work with 10" wheels, that is what I am running all the way around on my '72 LWB GMC.

11-18-2008, 08:33 AM	#11
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: 15" rallye Here's my 15x10's with 5" BS. These are also 275/60-15's. Attached Images __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823

11-18-2008, 08:39 AM	#12
70jnktrk Registered User Join Date: Jan 2003 Location: arizona Posts: 213	Re: 15" rallye Lo..looks great and all these photos really help. What width are you running on the front?

11-18-2008, 09:38 AM	#13
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: 15" rallye I'm running a 7" ralley with 215/70-15's. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823



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