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Vortech 6.0 Max 4x4 - got questions

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Old 09-21-2010, 01:31 PM
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Originally Posted by jimmyboy8301
stock tires are 32x10.5's
I guess it is the spacing on the after market wheels that is killing me then because I am rubbing with 285/55/20 and a 1 inch leveling kit.
Old 09-21-2010, 02:22 PM
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the backspacing and the width probably
Old 09-21-2010, 04:03 PM
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My stock 16"s measured 29.5". My 20"s measure 31". I dont think stock 20"s measure 32" unless there 60s, not 55s

Mine also rub but its only when turning to the stops. Maybe if you can find a 245 or 255 it wont rub but you never know until there on the truck.

Forgive me if you have already answered this but what tire (brand and name/number) are you running? if your sitting at 32.3" and its a 285/55, im thinking a mud tire.
Old 09-21-2010, 06:52 PM
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Look on the VIN label inside the drivers side door. It should list the tire size that the truck came with from the factory. You can use the online calculators to get the total height. My 275/55/20 are 31.9" and they came stock.
Old 09-21-2010, 07:39 PM
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Or you could just slap a tape measure on it and find out the easy way. That's what I did, I didn't know I needed a calculator!
Old 09-21-2010, 08:44 PM
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Originally Posted by Bow-Tie-Beast
My stock 16"s measured 29.5". My 20"s measure 31". I dont think stock 20"s measure 32" unless there 60s, not 55s

Mine also rub but its only when turning to the stops. Maybe if you can find a 245 or 255 it wont rub but you never know until there on the truck.

Forgive me if you have already answered this but what tire (brand and name/number) are you running? if your sitting at 32.3" and its a 285/55, im thinking a mud tire.
Nitto Terra Grappler 285/55/20 ---> 32.3x11.2
Factory 265/70/17 ---> 31.6x10.4
This is a difference of 2.3% in tire circumference
Old 09-22-2010, 11:11 AM
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Wow, Your factorys are bigger than my 20"s in circumference, crazy.

If you dont want the tire rub, you can go with a 245/255 as stated earlier or you could try to find a 50 or maybe a 45. It will be a lower profile but it would bring the overall hight of the tire down some.

Before I bought anything I would try pulling the backspacers, just to see. You might be able to go up to a 305 like some of the others on here.
Old 09-23-2010, 01:42 PM
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I have the same terra grapplers on 20x8.5 weld's on my 2500 suburban with no adjustments to stock height. I had my body guy play around with the inner fenders and they clear 90% of the time, but backing out of a driveway on an incline with the front suspension loaded they sometimes rub but nothing major....

being a city guy I have enough problems with parking garages, I always hit the chains at stock height.....have to ride thru with my hand out the moonroof.......I'm not making this truck any higher than it already is.
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