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dfeldt91 · 02-14-2016, 03:35 AM

I've got another 15,000 miles on my tires but would like to get narrower tires to help with rolling resistance and aero.

My current tires are 195-65-15's. I'd like to get 165-80-15's. Here is a comparison.

1.18" narrower and 13 less revolutions per mile for the new tires as they are slightly larger.

With a 2% increase(guessing), it wouldn't make sense financially to change the current tires for narrower ones since it costs to get them balanced and put back on if I ever want to use them again....So, I'm going to try to find lightweight wheels then mount the new ones to those and get some covers for aero. Lighter tires, lighter wheels, slightly larger tires, aero covers = MORE MPG!!

I'm also going to block the lower grill and order a lower engine cover(Front Belly Pan)

Oh boy, the adventure begins...

02-14-2016, 03:35 AM	#11 (permalink)
dfeldt91 EcoModding Apprentice Join Date: Mar 2015 Location: Salem, Oregon Posts: 128 Mazda 3 - '06 Mazda 3 iTouring Thanks: 7 Thanked 20 Times in 17 Posts	I've got another 15,000 miles on my tires but would like to get narrower tires to help with rolling resistance and aero. My current tires are 195-65-15's. I'd like to get 165-80-15's. Here is a comparison. 1.18" narrower and 13 less revolutions per mile for the new tires as they are slightly larger. With a 2% increase(guessing), it wouldn't make sense financially to change the current tires for narrower ones since it costs to get them balanced and put back on if I ever want to use them again....So, I'm going to try to find lightweight wheels then mount the new ones to those and get some covers for aero. Lighter tires, lighter wheels, slightly larger tires, aero covers = MORE MPG!! I'm also going to block the lower grill and order a lower engine cover(Front Belly Pan) Oh boy, the adventure begins...