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

    • MBS206
      New fix for low tyre pressure from bmw

      By MBS206 · Posted

      Yep, pretty much what you said is a good summary. The aftermarket thing just attached to the rim, then has two lines out to valve stems, one to inner wheel, one to outer wheel. Some of the systems even start to air up as you head towards highway speed. IE, you're in the logging tracks, then as speeds increase it knows you're on tarmac and airs up so the driver doesn't even have to remember. I bet the ones that need driver intervention to air up end up seeing a lot more tyre wear from "forest pressures" in use on the highway!
    • sunsetR33
      Anyone know this frontpipe?

      By sunsetR33 · Posted

      Yes, but you need to do these type certifications for tuning parts. That is the absurd part here. Meaning tuning parts are very costly (generally speaking) as well as the technical test documentation for say a turbo swap with more power. It just makes modifying everything crazy expensive and complicated. That bracket has been lost in translation many years ago I assume, it was not there.
    • dbm7
      New fix for low tyre pressure from bmw

      By dbm7 · Posted

      Hahaha, yeah.... not what you'd call a tamper-proof design.... but yes, with the truck setup, the lines are always connected, but typically they sit just inside the plane of the rear metal mudguards, so if you clear the guards you clear the lines as well. Not rogue 4WD tracks with tree branches and bushes everywhere, ready to hook-up an air hose. You can do it externally like a mod, but dedicated setups air-pressurize the undriven hubs, and on driven axles you can do the same thing, or pressurize the axles (lots of designs out there for this idea)... https://www.trtaustralia.com.au/traction-air-cti-system/  for example.... ..the trouble I've got here... wrt the bimmer ad... is the last bit...they don't want to show it spinning, do they.... give all the illusion that things are moving...but no...and what the hell tyre profile is that?...25??? ...far kernel, rims would be dead inside 10klms on most roads around here.... 😃
    • joshuaho96
      Anyone know this frontpipe?

      By joshuaho96 · Posted

      You're just describing how type certification works. Personally I would be shocked to discover that catalytic converter is not in the stock mounting position. Is there a bracket on the transfer case holding the catalytic converter and front pipe together? If so, it should be in stock position. 
    • GTSBoy
      New fix for low tyre pressure from bmw

      By GTSBoy · Posted

      You talking about the ones in the photo above? I guess that could make sense. Fixed (but flexible) line from the point up above down to the hubcap thingo, with a rotating air seal thingo. Then fixed (but also still likely flexible) line from the "other side" of the transfer in the hub cap thingo up to the valve stem on the rim. A horrible cludge, but something that could be done. I'd bet on the Unimog version being fed through from the back, as part of the axle assembly, without the need for the vulnerable lines out to the sides. It's amazing what you can do when you have an idea that is not quite impossible. Nearly impossible, but not quite.
×
×
  • Create New...