When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
i hope it's coincident, but after i upgraded to 19'' wheels, i noticed i'm getting 2 mpg worsen from my calculation between fillups. my 19s are forged therefore they're lighter than the factory 18s i had on before, so it can't be the up-sprung weight gain. colder weather maybe? also when am i suppose to change air filter? i'm at 14k miles, maybe the dirty air filter is the reason for poorer mpg.
What size tires are u running ?? I noticed the same thing when I upgraded to 19's with a 255/40/19 rear tire . The other thing I also noticed is the speedo running slower but I know that is due to the 40 series tire in the rear
What size tires are u running ?? I noticed the same thing when I upgraded to 19's with a 255/40/19 rear tire . The other thing I also noticed is the speedo running slower but I know that is due to the 40 series tire in the rear
i'm running 255/35/19 in rear, that's factory recommended size for 19'' staggered f-sport wheels.
i hope it's coincident, but after i upgraded to 19'' wheels, i noticed i'm getting 2 mpg worsen from my calculation between fillups. my 19s are forged therefore they're lighter than the factory 18s i had on before, so it can't be the up-sprung weight gain. colder weather maybe? also when am i suppose to change air filter? i'm at 14k miles, maybe the dirty air filter is the reason for poorer mpg.
You have more rotational mass therefore it would be more MPGs as the wheel would need to work harder to move the mass. If the forged wheels were even lighter, to match that of the factory 18". However if you are comparing to factory 19"s then the forged 19"s will be lighter.
You have more rotational mass therefore it would be more MPGs as the wheel would need to work harder to move the mass. If the forged wheels were even lighter, to match that of the factory 18". However if you are comparing to factory 19"s then the forged 19"s will be lighter.
the f-sport forged 19s does weight than my factory 18s, i saw the weight comparison on Sewell.com and felt the difference when swapped them out. however, the 19'' tires are more heavy than the 18s, so if there's any weight gain from the wheel upgrade it's from the tires, i suppose.
It's probably because your tires are wider. (245mm for 18's vs 255 for 19's) Wider tires makes for more grip but also makes your engine work harder to move your car.
11-22-11, 09:00 PM
mpg getting worse after wheel upgrade
