Potential Problems?
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Senior User
Joined: Dec 2009
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Potential Problems?
I know it is not the exact forum to post this, but there is always so much great info fromt he guys on the 6.0 pages, so I figured I would get some good answers here. I have a 2006 F250 CC 4wd that I need to replace the tires on. There are so many people upgrading wheels and tires that Craigs list has a ton of 20" factory rims and tires for less than I could replace just my 18" tires for. My question is what kind of problems would I have going from 18" to 20" rims? Is it something that could be recalibrated? I would assume the speedo would be wrong, but not sure what else the swap would throw out of balance.
thanks
thanks
Lead Driver
Joined: Feb 2011
Posts: 8,241
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From: L.A. (Lower Alabama)
Not a problem at all if you get a shorter tire for the taller rims the overall height stays the same. For example a LT275-65-20 is (pretty much) the same as a LT275-70-18. No effect on speedometer. All of 'em should be balanced before putting them on your truck so no worries there. If you're looking to go BIG, you'll need a little lift for body clearance, and the speedo' calibration can be changed with a computer.
Lead Driver
Joined: Feb 2011
Posts: 8,241
Likes: 155
From: L.A. (Lower Alabama)
Here's a nifty, easy to use calculator for tire size and speedo' error. Will give you some idea if the tires your thinking of using makes a difference and how much.
Speedometer Calibration Calculator And Information
Speedometer Calibration Calculator And Information
Logistics Pro
Joined: Mar 2007
Posts: 4,604
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From: Claremore, OK
If you want to go bigger than 37" (think that's the max on IDS) you'll need to find someone with an AutoEnguity to change the speedometer.
And for the record, from '99 through current production...they use the same bolt pattern. Just in case you were wondering.
And for the record, from '99 through current production...they use the same bolt pattern. Just in case you were wondering.
Senior User
Joined: Oct 2010
Posts: 101
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Yes, the same bolt pattern- don't forget, the newer trucks use different BS, and offset...
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