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  #1  
Old 04-01-2011, 07:43 PM
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Default smallest size wheel?

i have been trying to find a definitive answer for the smallest size wheel diameter that i can fit on my 07 dodge ram 2500 mega cab? It came stock with the 8lug 17" factory wheels, but i want to get a set of spares for offroad use, any help would be appreciated
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Old 04-01-2011, 08:38 PM
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17 inch are the smallest any smaller wont go on because of brake clearance
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Old 04-01-2011, 09:17 PM
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I know that 2nd generation rams came with 16's but the brakes were smaller in the front and the rears had drums. I don't think any of those would fit your truck.

Maybe you can measure the offset and backspacing of your stock wheels. Here's the specs on the smaller wheels:

1994-1999 1500 2WD/4WD Aluminum Wheels
• Lug Pattern - 5 on 5.5", 1/2" bolt
• Rim Size - 16x7.0"
• Offset - +13.97mm
• Backspace - 5"

Now, as a comparison, here's the specs on the 17" wheel for the 2000 - 2003 trucks that had rear disc brakes:

2000-2003 1500 2WD/4WD 17" Aluminum Wheels:
• Lug Pattern: 5 on 5 1/2
• Weight: 23.5 pounds
• Rim Size: 17x8"
• Actual width edge to edge: 9 1/16"
• Backspacing: 5 9/16".
• The space from the outside edge to the mounting surface (against the rotor) is 3 1/2".
• offset calculate: 1 1/32"

You can see there are a couple of key dimensional differences between the 15" and the 17" to accommodate the larger brakes.

I think a 15" wheel with the same backspace & offset specs as the 17" wheel above would work but finding them is gonna be problematic. I don't know that they exist!

Good luck.
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Old 04-01-2011, 11:07 PM
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ok, thanks for the heads up, i wasnt sure and seems like larger offroad tires are cheaper with a 15-16 wheel.
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