Results 1 to 5 of 5

Thread: Tyre size advice

  1. 8th August 2009, 05:33 PM #1
    thrower78
    thrower78 is offline Master
    Join Date
    Jun 2007
    Location
    Townsville NQ
    Posts
    161
    Total Downloaded
    0

    Tyre size advice

    Hi all,
    Very soon once suspension is done I will be fitting bigger boots to my 97 tdi disco. Have a couple of quick questions for all you tyre gurus out there.

    The flares I have fitted / guard trimming I have done will fit up to a 33" tyre.
    I was thinking of running 265/75/16 with an offset rim that would be appropriate. How much will these tyres affect my gearing? and is there a common after market CnP ratio I can use to bring the gearing back to standard?
    or
    Is it going to be eaiser to run a 285/75 or 255/85 something closer to 33" and use 4.1 ratio in the diffs?

    If I run the tyres closer to 33" I will have to go the ratios straight up, where as the 265's I could probably get away with running them on stock gearing for a while.

    I have been thinking about this for a while, a lot of people here run these sizes please let me know what you think.

    Andrew
    Reply With Quote Reply With Quote
  2. 9th August 2009, 09:52 AM #2
    discopete's Avatar
    discopete
    discopete is offline Master Silver Subscriber
    Join Date
    Sep 2007
    Location
    Hobart
    Posts
    643
    Total Downloaded
    0
    Hi Andrew, I run 235/85/16s on my tdi disco which is similar to 265/75s, about 32inch. The fuel pump and turbo have been tweaked which helps push the larger tyres. But hill starts and towing can still be a problem. I wouldn't go 33s without fitting 4.11s gears.

    Pete
    Reply With Quote Reply With Quote
  3. 9th August 2009, 10:26 AM #3
    Bush65
    Bush65 is offline YarnMaster
    Join Date
    Jan 1970
    Location
    'The Creek' Captain Creek, QLD
    Posts
    3,724
    Total Downloaded
    0
    I fitted 4.11:1 cw&p in my 300Tdi disco and some 33" muddies that I had left over. The speedo read faster than actual speed given by gps.

    I now have 265/75R16 mtz's and the speedo reads 10% higher than actual from gps (i.e. 110 kph from speedo = 100 kph from gps).
    Reply With Quote Reply With Quote
  4. 9th August 2009, 11:10 AM #4
    953's Avatar
    953
    953 is offline Master
    Join Date
    Sep 2006
    Location
    Parkdale Vic
    Posts
    568
    Total Downloaded
    0
    Hi Andrew,
    I ran 265/75,s (same car) with a 2" spring lift & a bit of snipping here & there.
    Very minor rubbing, but it did slow it down a tad, u would deffinately want to change ratios to step up to 33,s.
    Cheers Dean.
    Reply With Quote Reply With Quote
  5. 10th August 2009, 06:48 PM #5
    thrower78
    thrower78 is offline Master
    Join Date
    Jun 2007
    Location
    Townsville NQ
    Posts
    161
    Total Downloaded
    0

    ratios

    Are 4.11 ratios the first step up in ratios?
    Is there something between the standard and 4.11's. The reason I ask is 4.11's will be to highly geared for 265/75's. So If I was to run 265/75's would there be anyway to get my gearing back to standard?
    I'm just thinking of the poor old tdi, its slow at the best of times let alone trying to push bigger tyres. There is an easy solution to 33's just fit 4.11's.

    Also is there realy all that much difference between 265's and 33"'s I would gain 30mm in diameter of the wheel?

    Andrew
    Reply With Quote Reply With Quote
« Is this normal? | LT85 and R380 Spigot - same? »

Bookmarks

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
  •  

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!