Widest tire I can run with a 4" drop and 15X8 Rallys? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

8t5Silverado · 04-13-2004, 07:12 PM

I have 15X8 Rallys with Western Chassis 2.5" drop spindles and Western Chassis 1.5" drop coils.

I want to keep at least a 27-28" tall tire since the rear will be a 275/60-15 (which is about 27.99" in diameter).

225/70-15 = 27.4" diameter

235/70-15 = too tall = 28.29"

235/65-15 = odd size?

235/60-15 = 26.10" = too short

245/60-15 = 26.57" = better, but still kind of short?

245/65-15 = 27.54" = odd size?

255/60-15 = 27.05" = might be too wide...?

gldevall · 04-13-2004, 07:21 PM

I'd go with the 255/60/15. That's what I am running in the back right now, but I'm about to get some 275/60 for the back and move the 255 up front. They are both on 8" wide wheels.

8t5Silverado · 04-13-2004, 11:29 PM

That is what I would prefer to run...as long as it doesn't rub.

bagged78 · 04-13-2004, 11:51 PM

The 255/60 looks good in the front, and matches up well in height. My brother has that set up on his 71 burb...

I was running 225/70's on the front of mine with a 7" wheel and it was maybe a 1/4" diff from the rear 275/60's on 8" wheels....

8t5Silverado · 04-13-2004, 11:54 PM

Is that what you were running on that pic of your blue truck laying on the driveway? If so, they look good.

bagged78 · 04-14-2004, 12:06 AM

Yes, in this pic it has 225/70/15 on 7" infront, and 275/60/15 on 8" in rear..
I liked the look a lot

Here is another look..

trixter99 · 04-14-2004, 09:43 PM

I have 295 50s on an 8" ralley rim with a 4" drop in the rear of my 86. Sorry no pics.

stepside454 · 04-15-2004, 12:49 AM

Bagged same combo im runnin front & rear on my 75, my front wheels are stamped 6.5", the tires do rub the lower a arms if I turn the wheels sharp.
8t5, where you in Festus recently with your truck ? Gonna be a cruise @ Mc Donalds Festus this Sat. night, I plan to go, plus Riverport swap meet on Sunday. John

04-13-2004, 07:12 PM	#1
8t5Silverado Mudslides 'r my specialty Join Date: Dec 2003 Location: STL Posts: 1,106	Widest tire I can run with a 4" drop and 15X8 Rallys? I have 15X8 Rallys with Western Chassis 2.5" drop spindles and Western Chassis 1.5" drop coils. I want to keep at least a 27-28" tall tire since the rear will be a 275/60-15 (which is about 27.99" in diameter). 225/70-15 = 27.4" diameter 235/70-15 = too tall = 28.29" 235/65-15 = odd size? 235/60-15 = 26.10" = too short 245/60-15 = 26.57" = better, but still kind of short? 245/65-15 = 27.54" = odd size? 255/60-15 = 27.05" = might be too wide...? __________________ Always on the lookout for old cars and parts...(20s, 30s, 40s, 50s, 60s, etc.) http://www.cardomain.com/memberpage/500339

04-13-2004, 07:21 PM	#2
gldevall Registered User Join Date: Mar 2003 Location: Walker, LA Posts: 2,925	I'd go with the 255/60/15. That's what I am running in the back right now, but I'm about to get some 275/60 for the back and move the 255 up front. They are both on 8" wide wheels. __________________ Gary -1986 SWB: lowered 4/6, SOLD!!! -Best 1/4 mile: 14.51 @ 91.01 MPH -2001 Pewter Tahoe, billet grill, Corsa Sport Cat-back, K&N FIPK SOLD!!! -2004 Z-71 Extended cab with a flowmaster, BDS 6.5", 3" BL, 35x12.5x18 Trail Grapplers on Pro-Comp 18x9 wheels

04-13-2004, 11:29 PM	#3
8t5Silverado Mudslides 'r my specialty Join Date: Dec 2003 Location: STL Posts: 1,106	That is what I would prefer to run...as long as it doesn't rub. __________________ Always on the lookout for old cars and parts...(20s, 30s, 40s, 50s, 60s, etc.) http://www.cardomain.com/memberpage/500339

04-13-2004, 11:51 PM	#4
bagged78 world class smart ass! Join Date: Jan 2003 Location: Clinton Utah Posts: 335	The 255/60 looks good in the front, and matches up well in height. My brother has that set up on his 71 burb... I was running 225/70's on the front of mine with a 7" wheel and it was maybe a 1/4" diff from the rear 275/60's on 8" wheels.... __________________ Aric 75 2WD BLAZER (never ending project) -some day maybe- 02 2500HD CREW CAB 4X (daily drive) -8" lift 37s and 22s- ____ ____________________________

04-13-2004, 11:54 PM	#5
8t5Silverado Mudslides 'r my specialty Join Date: Dec 2003 Location: STL Posts: 1,106	Is that what you were running on that pic of your blue truck laying on the driveway? If so, they look good. __________________ Always on the lookout for old cars and parts...(20s, 30s, 40s, 50s, 60s, etc.) http://www.cardomain.com/memberpage/500339

04-14-2004, 12:06 AM	#6
bagged78 world class smart ass! Join Date: Jan 2003 Location: Clinton Utah Posts: 335	Yes, in this pic it has 225/70/15 on 7" infront, and 275/60/15 on 8" in rear.. I liked the look a lot Here is another look.. __________________ Aric 75 2WD BLAZER (never ending project) -some day maybe- 02 2500HD CREW CAB 4X (daily drive) -8" lift 37s and 22s- ____ ____________________________

04-14-2004, 09:43 PM	#7
trixter99 I have no time for this Join Date: Dec 2002 Location: Fort St John B.C. CANADA Posts: 434	I have 295 50s on an 8" ralley rim with a 4" drop in the rear of my 86. Sorry no pics. __________________ 1986 Chevy short box ( PROJECT ) 1994 Chevy Blazer lifted 6" 2009 Gmc 2500 HD 1999 Hugger orange Camaro SS 2007 BMW X5 Sport

04-15-2004, 12:49 AM	#8
stepside454 Registered User Join Date: Nov 2003 Location: st. louis area Posts: 1,551	Bagged same combo im runnin front & rear on my 75, my front wheels are stamped 6.5", the tires do rub the lower a arms if I turn the wheels sharp. 8t5, where you in Festus recently with your truck ? Gonna be a cruise @ Mc Donalds Festus this Sat. night, I plan to go, plus Riverport swap meet on Sunday. John __________________ 75 GMC C-15 short/step factory 454, lowered



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