Replacing two tires on 2010 EB 4.0L 4WD

[Willy92]

I have been reading all the threads I could find regarding replacing just two tires on an Explorer with automatic four-wheel-drive. Most threads reference technical service bulletin TSB 08-21-11 that states tire diameter differences cannot be more than 1/2 inch. I had a 2006 Explorer XLT 4.0 L and discovered the issue the hard way. The TSB referenced only covers years 2006 thru 2008.

I now have a 2010 Explorer Eddie Bauer 4WD 4.0 L, and again would like to replace just two tires. Does anyone know if ‘09 and ‘10 model years still have the same restrictions, or was the issue corrected?

 

[Mbrooks420]

Any 4wd vehicle should have the tires replaced in sets. It uses the tires diameter as a tool to detect slippage which effects your 4wd function.

It’s not an “issue” that can be corrected. If you want a 4wd/AWD vehicle it means replacing all 4.

Don’t buy two tires.

 

[94Eddie]

Having the circumference of the tires differ to a point they are out of Ford's specification will ruin the transfer case. The reason is the computer thinks the tires are slipping and then constantly keeps activating the transfer case to adjust for the non-existent slipping. This wears out some major components in the transfer case in a short period of time. I have seen some people shave one tire down to match the other three if there is a decent amount of tread on them. This said, it probably makes more sense to replace all the tires if two are worn or have been damaged.