will 15x8 wheels with 4or 4 1/2 bs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MT29 · 04-21-2010, 05:56 PM

will they fit over front and rear disc brakes? which bs is better to keep tire in the fender? thanks guys

Tx Firefighter · 04-21-2010, 06:19 PM

Sure, they will fit fine. The 4 inch backspace is the same measurement as a stock rally so that gives you an idea of how they look under the truck. The 4.5 inch backspace will tuck under the truck a bit better if you lower it.

**lolife99** · 04-21-2010, 06:20 PM

Up front a 15x8 with a 4" bs. is the most backspace you will fit up front without having wheel issues. (wheel contacting the lower a-arm) You may even have to trim the lower a-arm with a grinder. Calipers sometimes need grinding also.
If you would go up too a larger (17"-20") diameter wheel, more backspacing can be used.
The rear should be fine with 15's and a 4"-4.5" bs.

Tx Firefighter · 04-21-2010, 06:29 PM

Quote:

Originally Posted by lolife99

Up front a 15x8 with a 4" bs. is the most backspace you will fit up front without having wheel issues. (wheel contacting the lower a-arm) You may even have to trim the lower a-arm with a grinder. Calipers sometimes need grinding also.
If you would go up too a larger (17"-20") diameter wheel, more backspacing can be used.
The rear should be fine with 15's and a 4"-4.5" bs.

Keith, I do not agree. I currently have 15x8 with 4.25 backspace on my truck lowered with spindles and springs. Nothing needed clearancing anywhere.

04-21-2010, 05:56 PM	#1
MT29 Registered User Join Date: Sep 2009 Location: gboro nc Posts: 69	will 15x8 wheels with 4or 4 1/2 bs will they fit over front and rear disc brakes? which bs is better to keep tire in the fender? thanks guys

04-21-2010, 06:19 PM	#2
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: will 15x8 wheels with 4or 4 1/2 bs Sure, they will fit fine. The 4 inch backspace is the same measurement as a stock rally so that gives you an idea of how they look under the truck. The 4.5 inch backspace will tuck under the truck a bit better if you lower it. __________________ I'm on the Instagram- @Gearhead_Kevin

04-21-2010, 06:20 PM	#3
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,692	Re: will 15x8 wheels with 4or 4 1/2 bs Up front a 15x8 with a 4" bs. is the most backspace you will fit up front without having wheel issues. (wheel contacting the lower a-arm) You may even have to trim the lower a-arm with a grinder. Calipers sometimes need grinding also. If you would go up too a larger (17"-20") diameter wheel, more backspacing can be used. The rear should be fine with 15's and a 4"-4.5" bs. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823



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