Jump to content
SAU Community

Tyre Profile Problem

MADGT4
 Share

Recommended Posts

MADGT4 Mentor

MADGT4

Posted
Posted

Now is this what is causing the tranfer of power to the front wheels when driving at 60k/h?

Just driving normally not acceleratiing hard.

Don't ask me why but i think this is definately the problem....

I have a 32 GTS4

235/45 front

and for some odd reson i put.....

225/45's on the rear....

Yes i am a dumb ass but i just want someone to reasure me that this is the problem, BTW i only drove it for 30min like this.....

Link to comment
https://www.sau.com.au/forums/topic/58412-tyre-profile-problem/
Share on other sites
gts4diehard Rising Star

gts4diehard

Posted
Posted

The attessa works the same as the GTR,

so you need the SAME rolling circumference on all 4 tyres otherwise if the computer will think the rear tyres are spinning (revolving faster than fronts) and put power to the front wheels.

basic calc without the wheel size, easily shows that the Radius is definately different if you are running the same wheel size front/rear .

235 x 45 % = 105.75 mm tyre wall - front

225 x 45 % = 101.25 mm tyre wall - rear

Get some rears that are the same as the fronts as quick as possible as the front diff is not designed to be running continuosly, it can get extra hot, check the diff breather on the oil filter side of the engine and see if it has been spraying any oil out of it. If it has you should check the front diff oil level and top up...

If you cant get the same tyres straight away atleast put the bigger tyres on the rear, this is not a permanent solution but should help protect your front diff/transfer by reducing the number of times the cars goes into 4wd- the rears tyre revolving less than the fronts showing the computer the rears are not spinning although hard acceleration sensed by the g-force sensors will more than likely still put the car in 4wd mode.

Stephen

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • pogman
      George's R33 GTST build

      By pogman · Posted

      yeah i agree paint match stops it from standing out so much, oh that's actually really good to know i was wondering if it would help with air flow now actually having an outlet in the bonnet. Will have to focus on ducting into and out of the radiator now to make the most of it.
    • The Bogan
      George's R33 GTST build

      By The Bogan · Posted

      I would paint match the whole thing to avoid unwanted attention  I had a similar bonnet, paint matched, on my old R33 GTST, but mine was a fibreglass jobbie made by Blitz in QLD, they work extremely well for radiator efficiency and under bonnet temps
    • shortyboy
      Drive By Wire Conversion options

      By shortyboy · Posted

      Does anyone run this kit with factory plenum? Does the adapter and bosch tb fit under factory strut brace? I wanted to get this setup before going forward facing manifold. Thanks
    • pogman
      George's R33 GTST build

      By pogman · Posted

      small update time, after always wanting a "cool" looking bonnet for my car and always struggling to find one for the series 2 that i liked and wasn't an insane amount of money. Saw one i liked on RHDjapan from D-speed in Japan the price was very good for a carbon bonnet so good infact i was a little unsure how much i trusted it, decided to bite the bullet and with the help of jesse streeter in not long at all it was at my door. Once it was delivered i ran in from work and quickly unboxed it and to my surprise the quality was actually pretty good i quickly removed the old bonnet and placed on the new one to test it out and even the fitment wasnt too bad at all. Then decided to paint the little grille in the bonnet black to stop it sticking out so much.   I decided to not mess around with the hood latch and just install some aero catch hood pins, having never installed them before did some YouTube university classes and i was good to go. fair to say it is not a fun job at all from making brackets so the pins sit nicely and actually cutting through the bonnet but also being very scared of cutting the holes too big it took wayyyy longer than i would like to admit but finally got it there. Then it was time for a quick test drive to ensure the latches actually worked and thankfully the bonnet looked very stable. I still think paint matching the bonnet and leaving just the part that sticks up as carbon would help make it all look alot neater as im not sure how i feel about all that carbon on a very fridge white car but will leave it as is and see how i feel with time.  
    • MBS206
      Mistakes were made, my R34 Story

      By MBS206 · Posted

      I think it's bound to happen, you finally get it all perfect, and bam, something will happen. I took a while to get a Commodore rear quarter repaired where a P Plater clipped it. Two days after getting it back, Sarah wiped it out on a concrete pillar in an underground car park... This is why I take forever to repair them, it stretches how long until it gets bent again... 😛
×
×
  • Create New...