tire size for fuel efficiency

[doctony]

good day car lovers,

just want to know, is there an effect on fuel consumption if you change you tire size?

thanks and more power ........

[aejhayl17]

On my 04 altis, the difference of my gas consumption when I upsize my tires width is not significant. Though it feels heavier when with 215/45r17 shoes against the 185/70r14 stocks.


But still it delivers an average 10km/l on a good week. .2 to .7 less/more with the stock wheels.(di din consistent, Pareho Lang din ng FC).

[g26]

good day car lovers,

just want to know, is there an effect on fuel consumption if you change you tire size?

thanks and more power ........

Yes there is.

If you go bigger/wider, there'll be an increase on weight and friction. So fuel consumption will be higher. Not to mention the brake performance will be poorer. Better stay with the manufacturer's specs if you want to keep it running efficiently. Tire pressure affects FC too.

[uls]

masmahirap paikutin ang malaking gulong kesa maliit na gulong

[Wh1stl3r]

Also consider tire construction and tread pattern. The more road-biased the better for FE, specially at speed.

[mahalay]

Yes there is.

If you go bigger/wider, there'll be an increase on weight and friction. So fuel consumption will be higher. Not to mention the brake performance will be poorer. Better stay with the manufacturer's specs if you want to keep it running efficiently. Tire pressure affects FC too.

Sir kindly expound how a bigger/wider tire makes braking performance poorer? One could easily assume that since bigger/wider tire has a wider surface area in contact with the road surface, it should have a better braking performance.

[niky]

Braking isn't affected by tire size much... but if the tires are much much heavier, it will have a... slight... effect.

Even more important is the tire compound itself.

If you want great fuel economy, you go for the smallest wheels that will fit around your brakes with the narrowest tires that will fit on the rims.

[jick.cejoco]

don't let the odometer fool you into the feeling you saved fuel or get better mileage by changing your tire size. remember, the odometer was calibrated with the factory recommended tire circumference. the bigger the circumference, the heavier it is for the powertrain to push (mechanical disadvantage) compared to the pre-determined tire circumference. on the other hand, if you change the tire circumference to smaller one, it will be lighter for the powertrain but will tend to cover less distance per gallon of fuel. stay with the recommended tire circumference unless you have your engine/transaxle reprogrammed to the new tire circumference

[Ry_Tower]

don't let the odometer fool you into the feeling you saved fuel or get better mileage by changing your tire size. remember, the odometer was calibrated with the factory recommended tire circumference. the bigger the circumference, the heavier it is for the powertrain to push (mechanical disadvantage) compared to the pre-determined tire circumference. on the other hand, if you change the tire circumference to smaller one, it will be lighter for the powertrain but will tend to cover less distance per gallon of fuel. stay with the recommended tire circumference unless you have your engine/transaxle reprogrammed to the new tire circumference

+1 dito, kaya dapt not more tha 3% difference sa increase or decrease ng tires niyo from the OEM since it what the engr's designed for that particular vehicle. Sa net may nakita ako dati na nag-cocompute ng tire difference pati na rin ng difference between odo and speedometer reading by changing stock tires.

Basta AFAIK if you go higher, better fuel mileage kapag more on long distance driving at continous. pero is city driving, stick to OEM or go lower para less rolling resistance.

[GrayFox47]

Sirs,

Will there be any difference if i change 155 to 185 tires? Specifically 155/70/14 to 185/55/15? Thanks in advance to those who would reply.