Melody Wilkinson Posted August 18, 2015 Report Share Posted August 18, 2015 I would like to know the following, If a tire goes flat and it has to be replaced, do I also have to replace the other 3 even if the tires are good? I have a reason for asking this. Thank you Quote Link to comment Share on other sites More sharing options...
Larry Posted August 18, 2015 Report Share Posted August 18, 2015 No. What is your reason for asking. Thanks Larry Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted August 18, 2015 Report Share Posted August 18, 2015 The major concern is with an Edge that has AWD, where the system can and will shut down if too much difference (> 3%) is noted ("sensed") somewhere in the system. Best to replace with the same make/model of tire that the other 3 are. Will minimize ride/handling characteristics as well as keep the AWD from freaking out. HTH. Quote Link to comment Share on other sites More sharing options...
wlepse Posted August 18, 2015 Report Share Posted August 18, 2015 Not sure how sensitive Ford's AWD is to different rolling diameters but as mentioned above you do want to keep them close and the same model. A while back I was in a similar spot with my Audi and found out Tire Rack offered tire shaving. So if you do have to replace one give them a call and see if they still offer it. I think in my case I just ended up buying four new since the cost of shaving doubled the tire price. Quote Link to comment Share on other sites More sharing options...
JOEHIO Posted August 19, 2015 Report Share Posted August 19, 2015 (edited) Had a tire go bad on my wife's car (when she had her '09 MKS), and I replaced both front's so they would have same tread depth for handling. braking, etc. There was about 30,000 miles when she had the blowout. Edited August 19, 2015 by JOEHIO Quote Link to comment Share on other sites More sharing options...
Melody Wilkinson Posted August 23, 2015 Author Report Share Posted August 23, 2015 Not sure what AWD means. But does it have to do with the rear axel for the tires and how they rotate? Thanks Quote Link to comment Share on other sites More sharing options...
WWWPerfA_ZN0W Posted August 23, 2015 Report Share Posted August 23, 2015 (edited) AWD = All Wheel Drive, where both front AND rear tires can be driven as needed. Most of the time, the AWD is in FWD (Front Wheel Drive) mode, but is ready to engage all wheels/tires as needed when slippage is sensed, or the driver suddenly steps on the throttle so that power is manageably put to the ground. The overall height of the wheel/tire combination affects what the system "senses" when it is gathering information as to how much power to apply where, because it assumes a] the overall height is the same at each corner of the vehicle, and b] the overall height is equal to the setting in the computer's memory So BOTH conditions must be satisfied for the AWD to work properly, but you have a leeway of +/- 3%. Outside of that, the AWD when called upon feels it cannot deal with the conditions, and can shut down, effectively putting the Edge into a FWD or limp-home mode. NOT a good thing, as it can destroy the PTU (power takeoff/transfer unit). Edited August 23, 2015 by WWWPerfA_ZN0W Quote Link to comment Share on other sites More sharing options...
Melody Wilkinson Posted August 23, 2015 Author Report Share Posted August 23, 2015 Thank so much for all the information. I really appreciate it very much. I think I am going to look at something else. Would you have any information on the Ford Fusion? Quote Link to comment Share on other sites More sharing options...
enigma-2 Posted August 28, 2015 Report Share Posted August 28, 2015 Had a flat three weeks ago. Took it Sam's Club (have card, free repairs even though didn't buy tires there) and they told me if they couldn't repair properly, I would have to replace with new, same tire. Reason was the tread on AWD must match exactly. They did fix ok, and I followed up at Ford dealer and tire shop where tires purchased. Both agreed all four tire tread patterns must match on all 4 tires on AWD. 1 Quote Link to comment Share on other sites More sharing options...
Larry Posted August 28, 2015 Report Share Posted August 28, 2015 I guess I stand corrected. I didn't consider awd when I answered. Larry Quote Link to comment Share on other sites More sharing options...
good2Bking Posted August 30, 2015 Report Share Posted August 30, 2015 Melody, you can get a Ford Fusion in AWD as well, so don't let the information here deter you from looking into getting a Ford Edge. The same reasoning comes into play for most any AWD equiped vehicle. So if you're looking for a mid-sized SUV or CUV (crossover) the Edge is a tried and true proven vehicle in its class and one of the best out there. Quote Link to comment Share on other sites More sharing options...
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