Lowering Max Tire Size - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JaimeC85 · 03-09-2011, 07:15 PM

hey guys new to the forum. I have an 85 GMC 1500 and was planning on dropping it 4/5. but wanted to know if the tires i just bought would work with that drop. they are 275/60 r15. the rim is 10 inches wide.

Also is that the lowest possible drop to go on the truck without a cnotch.
thanx in advance. i know it gets posted numerous time.

http://img15.imageshack.us/i/imag0223to.jpg

http://http://img219.imageshack.us/i/imag0224h.jpg/

http://http://img820.imageshack.us/i/imag0225l.jpg/'

some pics of my truck

**lolife99** · 03-09-2011, 07:23 PM

Ususally you can lower the back up to 6" drop without a c-notch.
(but,... some trucks will be lower than others depending on the amount of sag in your 25 year old leaf springs)

A 4" drop up front is also very streetable.

The problem is your wheel and tire selection.
10" rims all the way around will cause issues if they aren't inside the fender lip.
275/60 will work fine on the rear, with the correct backspaced 10" rim,... or on an 8" rim.
Up front they are probably too wide.
I can't view your pics,... sorry.

jensenstage1 · 03-09-2011, 09:46 PM

Having issues trying to veiw pics, change it to only one http

**lolife99** · 03-09-2011, 10:08 PM

Quote:

Originally Posted by jensenstage1

Having issues trying to veiw pics, change it to only one http

Thanks.
I fixed the links.

03-09-2011, 07:15 PM	#1
JaimeC85 Registered User Join Date: Mar 2011 Location: El Paso, Tx Posts: 18	Lowering Max Tire Size hey guys new to the forum. I have an 85 GMC 1500 and was planning on dropping it 4/5. but wanted to know if the tires i just bought would work with that drop. they are 275/60 r15. the rim is 10 inches wide. Also is that the lowest possible drop to go on the truck without a cnotch. thanx in advance. i know it gets posted numerous time. http://img15.imageshack.us/i/imag0223to.jpg http://http://img219.imageshack.us/i/imag0224h.jpg/ http://http://img820.imageshack.us/i/imag0225l.jpg/' some pics of my truck Last edited by lolife99; 03-09-2011 at 10:07 PM.

03-09-2011, 07:23 PM	#2
lolife99 67-72 parts collector,… Join Date: Nov 2002 Location: Mid-MO Posts: 22,700	Re: Lowering Max Tire Size Ususally you can lower the back up to 6" drop without a c-notch. (but,... some trucks will be lower than others depending on the amount of sag in your 25 year old leaf springs) A 4" drop up front is also very streetable. The problem is your wheel and tire selection. 10" rims all the way around will cause issues if they aren't inside the fender lip. 275/60 will work fine on the rear, with the correct backspaced 10" rim,... or on an 8" rim. Up front they are probably too wide. I can't view your pics,... sorry. __________________ Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 Last edited by lolife99; 03-09-2011 at 07:23 PM.

03-09-2011, 09:46 PM	#3
jensenstage1 Registered User Join Date: Oct 2010 Location: Prince George BC Posts: 8	Re: Lowering Max Tire Size Having issues trying to veiw pics, change it to only one http Last edited by jensenstage1; 03-09-2011 at 09:50 PM.



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