User Tag List

Thanks Thanks:  0
Likes Likes:  0
Page 1 of 2 12 LastLast
Results 1 to 10 of 14

Thread: New Tyres - Substantial drop in MPG

  1. #1
    Regular Member leeds vectra's Avatar
    Join Date
    Jun 2005
    Location
    Leeds
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Insignia

    Trim : VX-Line

    Engine : BiTurbo

    Year : 2014

    Default New Tyres - Substantial drop in MPG

    All,

    Recently had fitted four Falken tyres brand new to my SRI as replacement for my NCT5's. On the Goodyears the car always returned 41-45 mpg but after six weeks on these Falkens i can't get anywhere near 40mpg. The car is only returning 35-37 mpg. I have checked all pressures and made them all 35 psi as stated in the handbook for my 2.2dti.

    Any ideas?

    Paul.

  2. #2
    Regular Member nellsey's Avatar
    Join Date
    Nov 2005
    Location
    berkshire
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    The NCT's are silca-based and cause less friction apparently, so increase fuel consumption but only by about 5% generally. They are a bit lighter to.

    Although 6mpg difference would seem hard to belive that it would be down to the tyres.

  3. #3
    Regular Member leeds vectra's Avatar
    Join Date
    Jun 2005
    Location
    Leeds
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Insignia

    Trim : VX-Line

    Engine : BiTurbo

    Year : 2014

    Default

    Can't put it down to anything else though. Only had the tyres done. The falkens do feel very sticky and bite alot when cornerning.

    Paul.

  4. #4
    Regular Member
    Join Date
    Sep 2005
    Location
    Sweden
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Quote Originally Posted by nellsey
    The NCT's are silca-based and cause less friction apparently, so increase fuel consumption but only by about 5% generally..
    That might explain the crappy grip with the NCT5 ... made for pure econ ...

  5. #5
    New Member
    Join Date
    Jan 2011
    Location
    Maidstone
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    I realise this is a really really old thread, but i just typed in 'vectra tyres fuel consumption' into google and this thread popped up.
    I was a little concerned by the fact that upon intsalling my shiny new faulken ZE12's ive dropped at least 50miles per tank! I wondered if i had engine problems but looking at this, and some other threads now it looks like its the tyres.

    Plus point, the car is now glued to the road and no more aqua plaining!

  6. #6
    Regular Member rushy's Avatar
    Join Date
    Jul 2005
    Location
    Old School Vectra-C.Com. Residing in sunny Leeds.
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : SRi


    Engine : Z22SE (2.2 Petrol)

    Year : 2004

    Mileage : 137000

    Default

    Get the pressure up to 38, or if your on 19 even higher.

  7. #7
    Full Member Big Sig's Avatar
    Join Date
    Aug 2006
    Location
    Is a very naughty boy
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    More grip = more friction = more fuel
    Now I need a turbo to keep up!

  8. #8
    Regular Member
    Join Date
    Sep 2009
    Location
    Audley STAFFS
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    an old thread I know, here are my findings,,, Falkens caused a drop in my mpg by 4 mpg (1.8),,,,,,however,, rears are on 20,000miles 4.2mil left, fronts on 17,000 miles 4.2 mil left,, so a drop in mpg but they have lasted very well, a good tyre for the dosh, but crap in the snow, if I can get them cheap enough fitted I will buy again. because there is NOTHING else in that price range as good.

  9. #9
    Regular Member izonoky's Avatar
    Join Date
    Aug 2007
    Location
    London
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats





    Default

    Quote Originally Posted by rushy View Post
    Get the pressure up to 38, or if your on 19 even higher.
    - well worth a try.

  10. #10
    Full Member merikiito's Avatar
    Join Date
    Apr 2007
    Location
    Northampton
    Problems Posted
    0
    Problems Solved
    0
    Best Answers
    0
    Good Answers
    0
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Vehicle InfoStats

    Vehicle : Insignia CDTi SRi NAV 160

    Trim : SRi

    Engine : A20DTH

    Year : 2009

    Mileage : 88000

    Default

    are the tyres sizes different? If they are it would explain your readings as the tyre circumfrence would have changed and therefore effect the fiqures
    Lois Griffin: Peter! You're bribing your daughter with a car?
    Peter Griffin: Ah, c'mon, Lois, isn't 'bribe' just another word for 'love'?

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Drop or not
    By travec19 in forum Suspension, Wheels & Brakes
    Replies: 1
    Last Post: 19th December 2011, 23:14
  2. To drop or not to drop??????
    By kenno31 in forum Vectra C / Signum Car Chat
    Replies: 7
    Last Post: 26th April 2011, 20:33
  3. 45F/40R drop
    By the stig in forum Styling
    Replies: 13
    Last Post: 16th October 2009, 18:54
  4. Always look before you drop one...
    By Penfold101 in forum Comedy & Humour
    Replies: 6
    Last Post: 25th November 2008, 21:40
  5. a drop too much oil!!
    By Nickzx6r in forum Engine & Drivetrain
    Replies: 7
    Last Post: 21st January 2008, 16:34

Visitors found this page by searching for:

Nobody landed on this page from a search engine, yet!

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •