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I washed my XC by hand yesterday for the first time since last year (mainly due to drought conditions where I live). Of course, during a hand wash you get to notice all of the new scratches, dings and other fun stuff. One thing I did notice is that one of my rear tires has developed a medium sized bubble. Wouldn't you know that there is also some evidence of tire on the edge of the rim which tells me that "somebody" brushed up against a curb (or something). I rarely drive the car anymore.

It looks like I am going to have to replace the tire in question, that much I know. It is a Michelin Latitude HP which isn't cheap. My question is, is it ok just to replace the one tire or should I replace both rear tires at this point? The set has about 20k mi. on them.

Thanks for any advice, folks!
 

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I would not do this without measuring the tread depths on the remaining tires. Most new tires for our SUV have depths that are in the 10/32 to 11/32 range. Depending on your history, if you have rotated these tires a couple of times it is possible that overall the rears are more worn than one would think for just staying on the back. They could be down to 5/32 and that would mean the new tire will have a rolling diameter that MAY be sufficiently different to cause a problem. I was told by my Porsche dealer that anything more than 3/32 will probably be a problem for the electronics. YMMV.
 

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I would not do this without measuring the tread depths on the remaining tires. Most new tires for our SUV have depths that are in the 10/32 to 11/32 range. Depending on your history, if you have rotated these tires a couple of times it is possible that overall the rears are more worn than one would think for just staying on the back. They could be down to 5/32 and that would mean the new tire will have a rolling diameter that MAY be sufficiently different to cause a problem. I was told by my Porsche dealer that anything more than 3/32 will probably be a problem for the electronics. YMMV.
buy from ebay from a seller with a good rating, I have had good success with that for replacing one tire twice now
 

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I am always amazed by the improvement (ride, handling, noise) you get from a new set of tires. If you tires are anywhere near 50% through their life, I would just replace the set. You may want to look into other brands that are more affordable. You can search/post here, or go to www.TireRack.com and do a tire search.
 

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Yeah, it is amazing how crappy the tires get. It suddenly becomes so much smoother and quieter with new tires. I need to find a replacement with stiff sidewalls. I am eating mine up on these tight slow corners. Every time I look at the tires it looks like I have tracked my XC90. The Continental Extreme Contact DWS just have too soft side walls, and the tread life of maybe 20K miles.
 
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