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Discussion Starter · #1 ·
I'm having a hard time finding 21 inch tires and they are way too expensive. Only got 17,000 miles out of the factory Continentals and again 17,000 miles out of Scorpion Pirellis. Not good for winter driving. Are 18 inch wheels compatible and will they mess up anything like accurate mileage, speedometer, AWD etc.? Any advice is well appreciated. Thank you.
 

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I have 18in rims on my 2020 rs.Because 21in so expensive. I'm used g the 18 with contact 7 winter tires. Seems pretty good to me
Have you noticed if mileage and speedometer are off with the 18 inch wheels? I talked to GM dealer and he said there is no re-calibration program for the Blazer like there is for the trucks that want to go with bigger size wheels.
 
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