So I'm not YET a CT owner. But curious as to how much you guys are getting gas mileage wise. Also curious that if you have aftermarket wheels has it made your MPG drop and if so by how much. Cause I have plans to get a CT by end of 2013 and want to know how much my personalizing (aka mods) will change how the car performs from stock. I have never owned hybrid vehicle.

40mpg with wheels. 45 or more with out. All depends on how you drive.

definitely your driving style comes into play, but ive noticed with my 18in i can get almost up to 45mpg. with my 19in wheels i got about 42. both aftermarket wheels.

All has to do with wheel's weight. Most after market wheels weight less than oem. Esp good quality ones

So if you grabbed a set of Enkei RPF1's in 17x7/8 (just as an example), they weigh a whole lot less than the OEM wheels, and added LRR tires (in OEM spec) you probably wouldn't hurt your mpg at all.

Does that sound right?

Yep, because the wheels are lighter and it takes the car less power to spin them.

Remember that a larger wheel spins less so it will seem like you're getting worse mileage.

I got 47 mpg on a tank last summer with my Enkei RPF1's I got from TireRack...mostly using SPORT and highway driving!

Here is mine but 17x9 RPF1 with Dunlop ZII 235/45/17



I got about 5.6L/100km (42MPG) on Sport Mode Light Throttle

Was your ride quality affected? Do lower profile wheels like 19s with thinner tires make for a more rough ride?