How was your FC after changing wheels?

[rattrapante]

I was originaly planning to sticking with my stock 16" on my Ford Ranger and just upgrade my rims, but when I went to T. Mapua this afternoon, I found many 20" wheel and tire set that was very affordable. I like the look of the 20" but am worried my FC will significantly drop. How much drop did you guys notice after upgrading your wheels?

Stock 245/70 R16 upgrade to 265/50 R20

[magilas_316]

i am currently on 17 rims. my FC is about 10-12 Km/L depending on traffic conditions. when i switched back to stock 15's, medyo nagimprove ng 12-14 Km/L. I also noticed a difference in acceleration, throttle response, etc. when in stock rims. pero like you, i like the look of the car with bigger rims so i went back to 17's. hehe. konti lang naman difference in FC.

i think in your case medyo magiging malaki effect sa FC since from 16, malaki ung upsize ng rims to 20. significantly mas lalaki circumference na kelangan paikutin ng engine mo, kaya mas hirap. equals more fuel to burn. but nothing beats a car with good looking rims though(preference ko lang naman).

hope this helps.

[111prez]

what if tires lang papalitan and not the rims? will FC be affected?

for example, changing stock AT tires to the same size MT tires which are heavier but not that much (1lbs or less difference in weight)

also, how about if the larger rims are actually lighter in weight compared to the stock rims, will FC be significantly affected?

hope that some gurus here can chime in on this

[MXFX]

my experience from 265/60/18 stock, to 265/50/20, and now 285/35/22 i noticed a slight drop in my mpg, about under .8 kml. lighter wheels may help, but at a steep price. expect those bargain wheels to be heavy.

[_Qwerty_]

what you need is a tire size calculator..

Tire Size Calculator - tire & wheel plus sizing

[jjmd3_787]

Mine is from 195/60R14 to 195/50R15.

Result: slight decrease in FC due to increased effort on acceleration.

[bayawak boy]

I have no idea what you mean by FC.

Anyway, if you maintain the tire diameter, there should be no drop to speak of.

Given the measurements that you gave, the upgrade closely approximates the original tire diameter. As such, there will be no significant change in ride height. However, these larger rims will adversely affect ride quality.

[bayawak boy]

Hahaha! You mean't fuel consumption. Sorry, dude. This is what happens when I don't sleep.

[Benzmizer]

Basic rim/tire-FC principle: The heavier the rim/tire is, the more likely your FC would suffer.

[Ry_Tower]

I found this site while I was also making a decision between 16's and 15's rims.

Answers.com - Does rim or tire size change mileage

To sum it up: "Therefore, if a car is used primarily for highway driving, overall MPG may improve with larger tires. For city driving, with lots of starts from dead stops, MPG may get worse with a larger tire. This has a lot to do with transmission design, where vehicle manufacturers gear the cars for a good blend of city/highway fuel economy, also based upon the power sweet spot of the engine (and tire size!). However, for cars used for a lot of highway driving, significantly better MPG may be achieved by gearing the transmission to use lower engine rpm's at highway speeds. (Especially with diesels). But regearing, if even possible, costs a lot of money. Increasing tire size is a cheap way of doing the same thing. A bigger tire will go farther distance during one revolution, meaning you need less engine rpm's to turn it."


Read more: Answers.com - Does rim or tire size change mileage

[vhronx]

I found this site while I was also making a decision between 16's and 15's rims.

Answers.com - Does rim or tire size change mileage

To sum it up: "Therefore, if a car is used primarily for highway driving, overall MPG may improve with larger tires. For city driving, with lots of starts from dead stops, MPG may get worse with a larger tire. This has a lot to do with transmission design, where vehicle manufacturers gear the cars for a good blend of city/highway fuel economy, also based upon the power sweet spot of the engine (and tire size!). However, for cars used for a lot of highway driving, significantly better MPG may be achieved by gearing the transmission to use lower engine rpm's at highway speeds. (Especially with diesels). But regearing, if even possible, costs a lot of money. Increasing tire size is a cheap way of doing the same thing. A bigger tire will go farther distance during one revolution, meaning you need less engine rpm's to turn it."


Read more: Answers.com - Does rim or tire size change mileage

Sir, nice one! double thumbs up!

[111prez]

Basic rim/tire-FC principle: The heavier the rim/tire is, the more likely your FC would suffer.

but what if the overall weight of the rim/tire is the same as the stock?

for example: larger tires which is heavier but newer rims that maybe wider but lighter so much so that overall weight of the new rim/tire is the same with the stock

will FC still suffer?

[gongrhey]

In my case i changed from stock 16s with 205 55 R16 tires to 17s with 205 50 R17. Wider & lower tire profile and larger rim with overall height taller than by about .19 inches. Pero yung pinili ko na mags ay mas lighter sa stock. Bago ko ipinakabit yung wheels na-compare ko muna yung weight ng dalawa mas lighter talaga yung 17s. The end result is good response from a complete stop, better acceleration and nag-improve yung FC ko.

May nabasa ako sa ibang forum, to keep within +/- 3% of the overall height pag magpapalit ng rims.

[Wh1stl3r]

but what if the overall weight of the rim/tire is the same as the stock?

for example: larger tires which is heavier but newer rims that maybe wider but lighter so much so that overall weight of the new rim/tire is the same with the stock

will FC still suffer?

FC due to the weight of the tire/rim combo will be the same. But taller and/or wider tires will also increase drag, also contributing to increased FC. I'd also be looking at the tread pattern. This also affects FC. You'll notice this more if you do a lot of highway driving. The bigger the spacing and less vertical the blocks are arranged, the more drag. If your tires are noisy on the highway malakas sa FC yun. Although if the bigger tires allow you to float over bumps instead of braking for them, FC might improve.

[Ry_Tower]

but what if the overall weight of the rim/tire is the same as the stock?

for example: larger tires which is heavier but newer rims that maybe wider but lighter so much so that overall weight of the new rim/tire is the same with the stock

will FC still suffer?

No. Same spec pa rin with the OEM set-up eh. Basta if more on city driving, the smaller lighter wheel/rim combo would be better. For those that do more hway rides, bigger wheels not tires itself would be more beneficial.

[111prez]

I have no idea what you mean by FC.

Anyway, if you maintain the tire diameter, there should be no drop to speak of.

Given the measurements that you gave, the upgrade closely approximates the original tire diameter. As such, there will be no significant change in ride height. However, these larger rims will adversely affect ride quality.

FC - Fuel Consumption