Jump to content
SAU Community

Tyre size recommendation for R34GTT?

Bill
 Share

Recommended Posts

Bill Collaborator

Bill

Posted
Posted

It time to get some new rubber on the beast.

At the moment Im running 225*45*17 all round.

(I think the wheel size is 17*7.5jj)

For some weird reason I suffer from a lack of traction at times...

Anyone got any recommendations on what size tyres to put on?

Would 245*40*17 all round be a decent choice?

or prehaps 245*40 at the rear and 225*45 at the front?

Or am I just better sticking with 225*45 all round?

Link to comment
https://www.sau.com.au/forums/topic/50735-tyre-size-recommendation-for-r34gtt/
Share on other sites
Bill Collaborator

Bill

Posted
  • Author
Posted
I'd be very careful. Changes to the rolling diameter can affect the TCS adversely and think its constantly slipping. Now of course if you drive with it off its doesn't matter.

Thanks for that.

According to the book at the tyre dealer the difference in diameter between both sizes is 4mm. You get more difference than that between a new and worn tyre so it should be ok I guess.

Abo Bob Grand Master

Abo Bob

Posted
Posted

Why wouldn't you put the widest tyres you can fit and afford?

You might have different width if your rear guards can hold wider than your front ones as they do on a GTT but with 7.5" wide rims you're not where near too wide so put the widest sensibly possible on there.

Bill Collaborator

Bill

Posted
  • Author
Posted
Why wouldn't you put the widest tyres you can fit and afford?

 

You might have different width if your rear guards can hold wider than your front ones as they do on a GTT but with 7.5" wide rims you're not where near too wide so put the widest sensibly possible on there.

Ok, thanks.

That makes sense.

I assume that 245 is as wide as I should go on 7.5" rims?

NickR33 Grand Master

NickR33

Posted
Posted
Is there any particular reson to put the same width on front and back?

Ive seen a number of cars which are different from front to rear.

yeah the wider your tires on the front the more 'vague' the steering will feel.

ie. I wouldn't go over 235 wide on the front of my GTSt

Then again tyre brand and quality is more important than overall size for handling

ed Grand Master

ed

Posted
Posted

245's will easily fit on 7.5" wide rims.

I am not sure if 255's would fit on 7.5" though?

But as Tony said 255 wide tyres fit on a skyline easily with no troubles.

I had 235 front and 255 rear before and it didn't bring up the slip light.

I'll be running 245 and 265 next month :)

Bill Collaborator

Bill

Posted
  • Author
Posted

Silly question maybe, but why would different sized tyres bring up the slip light?

Do you mean different sized front to rear ?(I could understand it, if they were different diameter), or just different sized from standar all round?

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

    • GTSBoy
      R34 GTR running rich and noisy turbo coincidence

      By GTSBoy · Posted

      Put a fuel pressure gauge on it. Replace the turbos. Probably completely separate issues.
    • Dose Pipe Sutututu
      R34 GTR running rich and noisy turbo coincidence

      By Dose Pipe Sutututu · Posted

      CAS maybe?
    • silviaz
      Recomended Coolant For Gt T R34

      By silviaz · Posted

      What copper washer do you guys use on the bleeder bolts? The existing one I have I had no idea where to find it in a local store, I did buy some online but that are only 1mm thick whereas my old one is 2mm+ thick and when I put the new washer out and squeeze the top radiator hose I can hear a bit of air but not with the old one. Does this matter? The new one doesn't leak, but the inner diameter is a bit loose whereas the old one threads on the bolt.
    • donut_kng
      R34 GTR running rich and noisy turbo coincidence

      By donut_kng · Posted

      Howdy all, after being out a few weeks ago on a spirited drive in my GTR I have 2 issues that oddly have appeared at the same time. Whilst accelerating quickly through the gears all of a sudden i’ve lost power at the top of third gear (below redline around 6000rpm) for no obvious reason.    From that point onwards the car has been running rich on idle, won’t really rev under load without a ton of black smoke and the odd backfire, and dying as a pull up to a set of lights unless I keep the revs up around 1500rpm. In addition when shutting down the car that same night (I was 10 minutes from home) I noticed one of the turbos was significantly noisy on wind down when shutting off the engine. After letting the car cool down overnight it starts up fine, although once it gets to temp the revs start to creep up and down, the exhaust is darker than it should be and it also sounds like it’s running rich (fat note) I’ve put a new set of plugs in it - no change, the old plugs all seemed OK with two of them being somewhat richer/fueled up than the other 3 with 1 being borderline. I’ve smoked tested the intake system via the front of the Turbos, found a split vacuum hose going to the factory boost gauge sender, which I have since replaced.  Also found another leak on the gasket coming off the rear turbo outlet, have also replaced this. After fixing both of these leaks - still have the running rich issue. I’ve also tried another pair of AFM’s - no change here After pulling off the front turbo intake pipes, there is obvious shaft play in the front turbo, which now hisses loudly on light revvs although I can’t see why this would make the car run funny even under idle. I’m curious to know why it’s running rich before I potentially replace/rebuild turbos. The car is completely stock <50,000kms  other than an exhaust. Oil and coolant are all clear. I haven’t bothered with coil packs as it looks like they won’t be the issue due to condition of the plugs. Any help appreciated as I cry myself to sleep!
    • Rezz
      R34 4 door side skirt identification

      By Rezz · Posted

      No probs at all. I used to love trying to dig up obscure info for those in need where possible going back 20+ years on SAU.  I did have another look and couldn't come up with any closer match. I'm leaning towards those skirts in your first pic are custom fitments, cut down/extended or from another car entirely and modded to fit an R34 sedan. I would've thought someone in Japan had them and taken a photo at some stage over the last 2 decades but there's nothing. Someone out there must know surely.
×
×
  • Create New...