Jump to content
SAU Community

Recommended Posts

Hello all,

Currently have a problem and was wondering what would be the best choice.

On my R32 GTST i have;

Rear:

235/45/r17 on 9inch +30 rims.

With this setup, the tyres are slightly stretched on rims which slightly stick outside the guards (-0.5~ camber (adjustable camber bushes))

I was planning on putting on some 245/40's or 255/40's but most likely they would not fit under the guards of the gtst..

img0708mediumwo0.th.jpgthpix.gif

Problem is, id like more traction and to lower the car.

With the stretched tyres, ive noticed a loss of traction and if i lower the car the rims/tyres wont fit without alot of camber/stretch.

So, my other option is to get a pair of 8inch +30 rims

and fit either 225/45's or 235/45's

225/45's on 8inch

img4089mediumbs6.th.jpg

235/45's on 8inch

img4088mediumcp8.th.jpg

The 235's also seem to stick out a bit..which would be the maximum size for a 8inch rim

Finally;

Would it be better to;

1. Stay with the 235/45's stretched onto 9inch rims?

2. Try and fit 245/40's onto 9inch rims (anyone done this before on a gtst?)

3. Use 225/45's onto 8inch rims

4. Use 235/45's onto 8inch rims

As my car will be tuned for 210kw~ atw, id prefer to have a decent amount of traction for track days etc

Any help would be great :(

Cheers

Patrick

Link to comment
https://www.sau.com.au/forums/topic/236982-ideal-tyre-size/
Share on other sites

cheers for the quick responses.

Im looking into getting some Bridgestone adrenalin's.

So the majoriy saying to stick with the 9inch's but with 245/40's?

Anyone happen to have any pictures of +30 9inch with these tyres?

Cheers

Link to comment
https://www.sau.com.au/forums/topic/236982-ideal-tyre-size/#findComment-4146438
Share on other sites

cheers for the quick responses.

Im looking into getting some Bridgestone adrenalin's.

So the majoriy saying to stick with the 9inch's but with 245/40's?

Anyone happen to have any pictures of +30 9inch with these tyres?

Cheers

definatly stick with the 9's, but as for width wait till u lower it and see how much room u have

obviously a wider tire of the same make/model is going to be provide more grip, but a better tire in the same size will also offer more grip. so u should look into getting quality tire, the adrenalin's are good, but for that bit extra u cant go past the RE01-R's imho they are the best all round tire u can get (st/motorkana obviosly not suited to full on track use)

Link to comment
https://www.sau.com.au/forums/topic/236982-ideal-tyre-size/#findComment-4146474
Share on other sites

cheers for info,

at the moment, if i have a full car load, the 9inch's scrub on the lip over bumps.

Once the lip is rolled, that should gain me another 10mm's, but im concerned whether that will be enough room for the 245/40's..

Spoke to a tyre/suspension workshop today and he suggested that the 9inch with 245/40's wont fit due to the +30 offset.

His opinion was to go 235/45's (same as my front wheels) so that way i can rotate them to minimize wear...

Anyone have 245/40's on a 9inch +30 rim? (ie. R33 GTR rims on a r32 gtst)

Thanks..

Link to comment
https://www.sau.com.au/forums/topic/236982-ideal-tyre-size/#findComment-4148459
Share on other sites

i ran 255/45's on some 17x9.5 +38's for a while, technically speaking they should sit close to where a 245 on a 17x9 +30 should. with a good guard roll you shouldnt have issues with a 245/45 on a +30, but it will depend on how good the roll is and what camber u are running.

Link to comment
https://www.sau.com.au/forums/topic/236982-ideal-tyre-size/#findComment-4149099
Share on other sites

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


  • Similar Content

  • Latest Posts

    • Ok i will get those 310mm. I found one but on a different site. This is the description on those...is it ok? Technical parameters: - Axle: front. - Disc type: ventilated. - Number of holes: 5. - Disc diameter: 310mm. - Total height with center: 54mm. - Thickness (new/min.): 30/28mm. - Designed for brake calipers manufacturer: Sumitomo.
    • You Gregged a whole racetrack!?
    • Look for broken wire or bad connector at the motor. Might not be it, but is worth starting there, as it is easy.
    • Hi everyone, I’m having an issue with my R32 GT-R. Sometimes, when the car goes over a bump or experiences some vibration, the 4WD warning light comes on the dashboard. When I check the code from the control unit in the trunk, it shows Code 19 – ETS Motor. However, everything seems to be working fine — if I turn off the engine and restart the car, the light goes away and everything functions normally. Has anyone experienced this before? Where should I start troubleshooting this issue? Thanks in advance!
    • I'm back from the dyno - again! I went looking for someone who knew LS's and had a roller dyno, to see how it shaped up compared to everything else and confirm the powerband really is peaking where Mr Mamo says it should. TLDR: The dyno result I got this time definitely had the shape of how it feels on the road and finally 'makes sense'. Also we had a bit more time to play with timing on the dyno, it turns out the common practice in LS is to lower the timing around peak torque and restore it to max after. So given a car was on the dyno and mostly dialled in already, it was time for tweaking. Luis at APS is definitely knowledgable when it came to this and had overlays ready to go and was happy to share. If you map out your cylinder airmass you start seeing graphs that look a LOT like the engine's torque curve. The good thing also is if you map out your timing curve when you're avoiding knock... this curve very much looks like the inverse of the airmass curve. The result? Well it's another 10.7kw/14hp kw from where I drove it in at. Pretty much everywhere, too. As to how much this car actually makes in Hub Dyno numbers, American Dyno numbers, or Mainline dyno numbers, I say I don't know and it's gone up ~25kw since I started tinkering lol. It IS interesting how the shorter ratio gears I have aren't scaled right on this dyno - 6840RPM is 199KMH, not 175KMH. I have also seen other printouts here with cars with less mods at much higher "kmh" for their RPM due Commodores having 3.45's or longer (!) rear diff ratios maxing out 4th gear which is the 1:1 gear on the T56. Does this matter? No, not really. The real answer is go to the strip and see what it traps, but: I guess I should have gone last Sunday...
×
×
  • Create New...