can a 215/65/15 fit with no problems?
#1
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hey all, im new here, i had a quick question. i know stock size is 205/65/15, but i haev a gift certificate to summit racing that i got for christmas, and i like these tires alot, but sadly they are only listed in 215/65/15. i dont think ill have any rubbing issues with the tire but i just wanna ask to double check. here is a link to the tire, please let me know what you think as well.
http://store.summitracing.com/defaul...0&autoview=sku
thanks
mike
http://store.summitracing.com/defaul...0&autoview=sku
thanks
mike
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well to my understanding, the aspect ratio is still the same, and the wheel size is the same, its just alittle bit wider than stock. so why would my speedo be off?
#6
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Here's a very old but very useful tool:
http://www.miata.net/garage/tirecalc.html
Stock Tire: 205/65R15
Sidewall 5.2"
Radius 12.7"
Diameter 25.5"
Circumference 80.1"
Revolutions/Mile 791.0
215/65R15
Sidewall 5.5"
Radius 12.7
Diameter 25.5"
Circumference 80.1"
Revolutions/Mile 776.0
As you can see, there is a huge difference. Going with a 215/65R15 tire will cause your speedo to read slower than it actually should be...and ultimately under calculating your measured mileage as there are 15 less revs/min.
http://www.miata.net/garage/tirecalc.html
Stock Tire: 205/65R15
Sidewall 5.2"
Radius 12.7"
Diameter 25.5"
Circumference 80.1"
Revolutions/Mile 791.0
215/65R15
Sidewall 5.5"
Radius 12.7
Diameter 25.5"
Circumference 80.1"
Revolutions/Mile 776.0
As you can see, there is a huge difference. Going with a 215/65R15 tire will cause your speedo to read slower than it actually should be...and ultimately under calculating your measured mileage as there are 15 less revs/min.
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