I have not posted in PC for a while. The majority of the opinion by PC poster is helpful but may not always based on first hand knowledge/research/ and or enlighten thinking and then there is always an exception Anyhow Most Gen2 owners have realize that the stock OEM 15 inch rims are part and parcel of the mpg overal package so why change........ I am not a custom rim/custom exhaust/etc kinda guy. (I can change ) I am considering purchasing custom rims like some of these from Tirerack Wheels for 2007 Toyota Prius The basis to purchase is more of improvement in the mpg performance if that can be done or had I am not going to change rim size or tire size. (thats more for the custom people) I have already found threads where someone went from a 15inch to 17inch rims only to decrease their mpg. So really do not want to relearn that experience. Custom Rims/Wheels/non OEM 15 inch Yes/No Pros/Cons Basis To Do So
If you buy rims that weigh less and tires that have a larger diameter, chances are you gas mileage will improve.
the way to improve the mpg via wheels/tires is to over inflate the tires just a bit - i run 42psi, also very light wheels should help, and there was a list someone put up from tire rack which said michelin energy savers were best for mpg, followed closely by bridgestone ecopias. if you buy heavier than stock wheels its gonna hurt mpg. the motegi sp10 is the only one listed that isn't heavier.
IMHO okay "LESS" and "LARGER" are relative terminology. I agree with less than current rim spec weight of OEM (whatever that is) I am less sure of the larger dia statement
I agree I own a set of the mich energy x and they are okay but same results have been had with other tire mfg..... and ..... michelin do not come cheap
Most of the custom rims are mass produce from China. The TIRERACK search list seven under 16lb ......I would think 14 to 15lbs would be preferable......trouble is unless someone has actually run these would be hard to know
i think i read here somewhere the oe wheels are 14.5lbs; motegi tracklites and several other forged racing wheels are lighter. if you run taller tires and your mpg displayed doesn't drop, since the taller tires will roll a few inches farther with each revolution, your mpg will improve, but it won't show it on the display. any wheel worth owning isn't cast in china. forged wheels are gonna be the way to go.
How much bigger do you want? 16, 17...larger? SSR Type C Enkei RPF1 BuddyClub P1 Racing Kosei K1 TS OZ Alleggerita Technicraft T6 Konig Daylite All these have 17" wheels the same or less weight than the OEM Touring 16" I'm looking at these as well... my 19" ADR are heaaaaaavy. But look good!
Please reread my orig post. I DO NOT WANT 17 INCH................. I like some of the KONIG but do not meet my application......
After reading Bill Wilson posts on steel and alloy rims. I have reached the conclusion most aftermarket 15 inch rims will be heavier than OEM or close to that specific weight. Alum alloy and carbon fiber rims have some promising low weight developments out there however carbon fiber rim is very very expensive.......................and not really sold aftermarket
Just to clarify, just because someone changes Rim size doesn't necessarily mean it will have negative effects. It will if the right wheel and tire combo aren't chosen that make the car work harder than OEM. A lighter larger wheel and the correct tire sizing could actually increase MPG. Did you check the wheel weights of any of these wheels in 15"... waaaay lighter than OEM.. SSR Type C Enkei RPF1 BuddyClub P1 Racing Kosei K1 TS OZ Alleggerita Technicraft T6 Konig Daylite
I am not doubting your statement however, without more detailed information and reference links there is no veracity or value there