Replacing tires on an AWD car
My tires have about 50,000 miles on them, one of them has a nail in the
sidewall. The dealership says I have to replace all 4 of them. The manual
says It is recommended that the two front tires or two rear tires generally be
replaced as a pair. Help
Since your car is part time AWD you can replace 2 as per the manual but all 4 is better. At 50k you really should do all 4.
Are the tires high mileage Michelins say like 70k?
So you won't ruin the transfer case the tires really need to match on all 4 wheels, it could also cause problems with the abs as some tires will be turning slightly faster than the others. The first AWD rig I had I bought used and later found out that someone had ran different sized tires on it and sheared the little teeth off the front driveline and destroyed the viscous clutch inside the transfercase, expensive fix. So mess with this either replace all four or find a used tire of the same make and have it shaved to match the other 3 until you can afford a new set of matching tires.
I would be cautious and replace all 4 tires or find a tire that is the same brand and series with similar tread depth on E-bay. I am in the same situation right now with my 2014 Dodge Ram 4x4. I ran over something that did damage to the tread of a tire and plugging it made the tread bulge under pressure. I will be replacing all 4 tires as they have only about 25% tread left.
AWD seems to built with no tolerance for this. I would understand & accept same tire size if it were to be any range of that same tire size stamped on the tire. The tiny variants in tire size by AWD systems is too narrow and are not acceptable, instead of the system (AWD) having allowable tolerances built in, AWD systems currently have allowable damage & cost of repairs built in at consumer loss. Their precision product flawed without regard for real life sent out for consumers to worry about. Its the same as the consumer worrying about if the metal is poured/mixed correctly at the plant. Its their poor decisions not consumers neglect, but engineers neglect.
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