better mileage w/ skinner tires - Toyota Yaris Forums

thebarber · 07-18-2009, 09:56 PM

normally our chevy aveo has 185-60-14's. i recently "upgraded" to 14" aluminum wheels w/ 175-65-14 tires....

w/ 185's the aveo typically would get about 7L/100km hwy in the summer....this last tank of mostly highway w/ some stop and go on it was 6.17L/100km. i usually do 120-130km/h on the highway (about 100 on hwy 6)

i was pleasently surprised -- i didnt think it would make that huge of a difference...

Tamago · 07-18-2009, 09:59 PM

not bad, did you factor in the 1% difference in height as well? since you went with a smaller overall circumference, you need to "remove" 1% from your mileage number (it's slightly more than 1% but whatever lol)

thebarber · 07-19-2009, 09:22 AM

Quote:

Originally Posted by Tamago

not bad, did you factor in the 1% difference in height as well? since you went with a smaller overall circumference, you need to "remove" 1% from your mileage number (it's slightly more than 1% but whatever lol)

well, even w/ the 1% difference in height, im still using about 0.75L/100km less

EasyDriver · 07-18-2009, 10:41 PM

Check out this tire info.....http://www.miata.net/garage/tirecalc.html

MadMax · 07-18-2009, 11:41 PM

Makes sense, less rolling resistance. I know I get lower gas mileage from Sprocket due to its taller, wider tires.

By the way, unless the dealer (who installed the wheels) adjusted it somehow, my Yaris' speedo is spot on with the larger wheels; according to my GPS.

Cosworth · 07-20-2009, 10:39 AM

what is the difference in weight of the tires?
Is one tire more stickier than the other (i.e. wear rating and traction rating)?

07-18-2009, 09:56 PM	#1
thebarber daily driver View User's Garage Drives: the #wrecho Join Date: Jun 2006 Location: Grand Rapids, MI Posts: 5,877	better mileage w/ skinner tires normally our chevy aveo has 185-60-14's. i recently "upgraded" to 14" aluminum wheels w/ 175-65-14 tires.... w/ 185's the aveo typically would get about 7L/100km hwy in the summer....this last tank of mostly highway w/ some stop and go on it was 6.17L/100km. i usually do 120-130km/h on the highway (about 100 on hwy 6) i was pleasently surprised -- i didnt think it would make that huge of a difference... __________________

07-18-2009, 10:41 PM	#4
EasyDriver Drives: 2008 Yaris Meteorite LB Join Date: Feb 2009 Location: Southern Michigan Posts: 61	skinnier tires.... Check out this tire info.....http://www.miata.net/garage/tirecalc.html

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07-18-2009, 09:59 PM	#2
Tamago Start another Oil Thread! View User's Garage Drives: ZZW30 Join Date: Dec 2006 Location: South FL Posts: 4,890	not bad, did you factor in the 1% difference in height as well? since you went with a smaller overall circumference, you need to "remove" 1% from your mileage number (it's slightly more than 1% but whatever lol)

07-18-2009, 11:41 PM	#5
MadMax Drives: 2008 Yaris Liftback (Sprocket) Join Date: Oct 2008 Location: San Antonio, Texas! Posts: 2,799	Makes sense, less rolling resistance. I know I get lower gas mileage from Sprocket due to its taller, wider tires. By the way, unless the dealer (who installed the wheels) adjusted it somehow, my Yaris' speedo is spot on with the larger wheels; according to my GPS.

07-20-2009, 10:39 AM	#6
Cosworth Drives: S sedan Join Date: May 2009 Location: MI Posts: 120	what is the difference in weight of the tires? Is one tire more stickier than the other (i.e. wear rating and traction rating)?