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New rims and tires

Discussion in 'Prius Owner Photos' started by Damageinc, Dec 11, 2005.

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  1. Damageinc

    Damageinc New Member

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    Here is a pic of my 2005 Prius with new 10 spoke Primax Sportmax 920's on Kumho tires size 215/50/17.

    I've noticed the gas mileage dropped about 4-7 mpg.

    [​IMG]
     
    #1 Damageinc, Dec 11, 2005
  2. mdmikemd

    mdmikemd Member

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    Maybe someone else can answer this, I've been up since Sat morning and I can't do the "math" in my head.

    Is it possible the overall diameter is bigger/smaller than the stock tires and your mileage reduction is a computational error? By the way, it looks sweet.
     
    #2 mdmikemd, Dec 11, 2005
  3. jeneric

    jeneric New Member

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    Looks like you actually go 67.65 miles when the gage says you go 65 miles according to this calculator converting 185/65/15's to 215/50/17's. That's another 4% of miles which would only be 2 mpg if you're getting 50. Interesting.
     
    #3 jeneric, Dec 12, 2005
  4. Damageinc

    Damageinc New Member

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    Thanks mdmike. I was thinking it was a computer error myself but no way to tell until I use a full tank of gas and see how many miles I get out of it.

    Since my new rims and tires and a full tank of gas I went 103 miles when I lost 1 dot from the fule gauge. The computer said I was averaging 42.8 mpg on this tank of gas at the time.

    Any thoughts.
     
    #4 Damageinc, Dec 12, 2005
  5. Astrotoy7

    Astrotoy7 New Member

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    hey ! thats the first time Ive seen a white one.... nice :)
     
    #5 Astrotoy7, Dec 21, 2005
  6. tracysbeans

    tracysbeans Member

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    Wow! That's sharp looking! It makes it look really sporty! How much did you pay for that setup?

    Now I'm wondering if I want a white Prius instead of a black one.

    Tracy
     
    #6 tracysbeans, Dec 25, 2005
  7. Damageinc

    Damageinc New Member

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    Thanks for the compliments. I really liked the white color or the black even better. The white became available down here in FL after Hurricane Wilma. There were prius' on the lots everywhere. Before the hurricane there was a 3 month wait for any color.

    The car was $25K. The rims, tires and tint were under $1,200 total.

     
    #7 Damageinc, Dec 28, 2005
  8. cdavid

    cdavid Member

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    Is there a way to adjust the computer to account for the larger tires so that it estimates more accurately?
     
    #8 cdavid, Dec 29, 2005
  9. Damageinc

    Damageinc New Member

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    I would like to know too.
     
    #9 Damageinc, Dec 30, 2005
  10. barry

    barry Guest

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    Hi~ Getting an 06 maybe white...tires and rims look great! Besides the look any other advantages? I live in the western md mts. where it can be icy?!?!?!
    Thanks!
    Barry

    Happy New Year! :D
     
    #10 barry, Jan 1, 2006
  11. Vagabond

    Vagabond Active Member

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    How's the handling now with the wider tires?
     
    #11 Vagabond, Jan 5, 2006
  12. habel

    habel New Member

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    #12 habel, Jan 5, 2006
  13. DocVijay

    DocVijay Active Member

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    Those wheels will work just fine. I have them myself, but haven't had a chance to mount them yet.
     
    #13 DocVijay, Jan 5, 2006
  14. habel

    habel New Member

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    Thanks for your comment Doc! I really like the look of these wheels - but I have to say that the 10 spoke Primax Sportmax 920's look very nice too.
     
    #14 habel, Jan 5, 2006
  15. Damageinc

    Damageinc New Member

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    Thanks for the compliments guys. The tires and wheels do help with the handling of the car. I felt with the 15" tires the car would not stay straight at higher speeds. The 17" wheels help that aspect.

    As for living in the mountains, I can't tell you much since I'm in Florida. No mountains here. I suggest an all-season tire. I believe Kumho's have good snow ratings. Check it out at tirerack.com.

    The downfall of the bigger wheels and tires is that the vehicle is sluggish off the line. Pretty noticeable I must say. The gas mileage according to the computer with the 17" wheels is down to 43-44 mpg. Not sure if the computer is miscalculating now. I got 430 mile son 9.1 gallons so that's about 47 mpg.

    At higher speeds I find the car must work alot harder between 70-80 mph and mpg drops down to 34 mpg at those speeds for 2-3 hr period. When I had the 15" wheels 75-80 mph was no problem.

    Hope that helps.
     
    #15 Damageinc, Jan 8, 2006
  16. Damageinc

    Damageinc New Member

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    Oh yeah,

    Also try to get lighter tires and wheels if going to 17". My Kumhom ecsta 711's are about 23.9 lbs each I believe. A 45 profile or lower will lower the weight.

    I plan on going to 205/45/17's next time I need to replace the tires. That should save about 4-5 lbs per tire and hopefully improve performance i.e. speed, pick up off the line.
     
    #16 Damageinc, Jan 8, 2006
  17. brasche

    brasche Member

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    Do you know the weight of the wheels? I found similar Konigs that weigh 16.2 lbs (close to the stock 15 inch wheel weight), but like the Primax wheels more. Just don't want to be stuck with 22 lbs wheels. TIA, Brian
     
    #17 brasche, Jan 28, 2006
  18. Damageinc

    Damageinc New Member

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    Brian,

    I could not find specs on the weight of the wheels. I wish I knew myself.

    Nick

     
    #18 Damageinc, Jan 28, 2006
  19. rposton

    rposton Member

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    A comment to those considering doing this to an 06;

    I don't know if this applies to some of the '06 owners who have replied, but my '06 with package 8;
    1. has sensers in the wheels. Remove a wheel, like when you have a flat and have to put on a spare, and an idot light, lights on the dash, till the original wheel gets re-installed. New wheels have to be programed by the dealer.
    2. there is a calibration function, which I have not tried, don't know the process but I have seen that menu choice on my info screen, that is supposed to recalibrate the car to the wheels when the diameter of the wheel changes due to worn rubber, or wheel replacement.

    My Prius is still new to me, I have not been through the above processes, I just know it because the salesman told me, and I have read the 2 books and other paperwork that came with the car.

    By the way, your white Prius looks pretty cool.

    -Roy
     
    #19 rposton, Feb 14, 2006
  20. DocVijay

    DocVijay Active Member

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    I replaced the wheels on my 2006 Prius. Yes, the idiot light stays on, but that's it. No problems. I'm not worried about the light, I just ignore it.
     
    #20 DocVijay, Feb 15, 2006
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