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Installed new Cooper cs5 Grand Touring tires on 2013 RAV4 XLE. Have noted 1 to 2 MPG less consistently. Has anyone else had this happen?
 

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I noticed a 1 mpg drop with my new Firestone Destination le2. But I only had them a couple weeks so I'm hoping it's just an anomaly.
 
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I have 5K on the CS5 Grand Touring and still 1-2mpg less. But they are so much quieter and smoother than the Yuk G91,s that were on it.
 

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New tires always increase rolling resistance, which does decrease again with some wear.
Its also true that all tires have different amounts of RR, so you may never see a complete return to previous MPG.
 

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As best I understand that is not unusual, especially if the original tires were low rolling resistance. I would gladly trade a couple of MPG's for a softer ride when it's time for me to get new shoes.
 
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Have you verified the air pressure is correct? You can adjust accordingly, I typically run 5-10 psi over.
 
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