740gle Posted September 16, 2016 Share Posted September 16, 2016 Had a flat yesterday, tires are pretty new <10Kmiles on them, very little thread wear. thinking on replacing only that one. tirerack says the full thread depth spec is 10/32", I measure 9/32" with my caliper. Searched the owner manual and found no mention that it may damage AWD? IIRC for my previous 02' and 2010' Legacy there used to be some acceptable tolerance on the tire diameter difference, but see nothing here?. Is the difference in tire diameter (circumference) no longer an issue with the new AWD drive for this MY? -Michael Link to comment Share on other sites More sharing options...
Fairtax4me Posted September 17, 2016 Share Posted September 17, 2016 It was always 1/4" circumference on the older models. You should be fine to get just one tire. Put it on the front left. Link to comment Share on other sites More sharing options...
740gle Posted September 17, 2016 Author Share Posted September 17, 2016 Yes, 1/4" circumference is how I remember and it was always in the manual, this 2014 does not list it. Why front left? Link to comment Share on other sites More sharing options...
golucky66 Posted September 17, 2016 Share Posted September 17, 2016 LF is most likely to wear the fastest, therefore it will catch up to the other three quicker. Link to comment Share on other sites More sharing options...
740gle Posted September 19, 2016 Author Share Posted September 19, 2016 Called a dealer service department, they said as long as the thread is "good" it's OK to replace just one tire but it has to be the same brand/model. Looks like the newer AWD system can tolerate diameter/circumference differences that are as large as whatever is due to the thread wear over the tire lifetime? Link to comment Share on other sites More sharing options...
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