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Discussion Starter · #1 ·
Got a flat tire on the rear passenger side. My spare is a slightly larger size than the rest of the tires on the vehicle. The CRV is the AWD model. The current tire size on the vehicle is 215/65/16 the spare is 225/55/17. Can putting the spare on the rear of the CRV damage anything, or activate the AWD? If it can damage it, why?
The difference in circumference is 1.1%. Will that have any adverse effects?


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1998 CR-V EX 4spd auto "Big Green" completely stock with roof rack and front mud flaps
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The chart you're showing actually says the spare is 1.1% smaller than your regular tires in tread diameter.

Given that, make sure you put the spare on the back because it's smaller. As long as you do that, you shouldn't have a problem. The RT4WD engages when the front wheels turn faster than the rear wheels.

That being said, you want to get 4 matching tires on the car as soon as you can (matching in the size AND amount of wear), because having different sizes will eventually make the 4WD clutch wear out. Since you must, putting the bigger tires on the front and the smaller tires on the back will buy you the most time because it will make the 4WD engage less, rather than more.
 
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