Jump to content
SAU Community

GTR Wheels

PranK
 Share

Recommended Posts

GraemeWi Enthusiast

GraemeWi

Posted
Posted

Yip, Vince over here had different sized tyres (on the same rims) on his GTR and his torque gauge was something like 50% all the time. It would eventually cause premature wear on the clutch packs, I think Vinces also accelerated funny until he got 4 identical tyres fitted.

Hows the AC3? Not been on my Konas for weeks!

Link to comment
https://www.sau.com.au/forums/topic/14208-gtr-wheels/#findComment-286057
Share on other sites
PranK Grand Master

PranK

Posted
  • Author
Posted

the AC3 is great.. i just put a new chain on, i haven't ridden in weeks either tho! :D

yeah, i was worried cause i am looking at some wheels wit h245 front and 255 rear tyres, but i wasn't sure.

Link to comment
https://www.sau.com.au/forums/topic/14208-gtr-wheels/#findComment-286071
Share on other sites
gtrken Grand Master

gtrken

Posted
Posted

Don't

Because of the slightly different rolling diameters , the ATTESSA will be for ever thinking the car is wheelspinning and keep trying to feed the power around to stop it.

Will kill the the transfer case clutch packs as Graeme said.

cheers

ken

Link to comment
https://www.sau.com.au/forums/topic/14208-gtr-wheels/#findComment-286081
Share on other sites
red900ss Grand Master

red900ss

Posted
Posted

If you fitted the same size tyre to those rims you would end up with a different rolling radius due to the tyre being "stretched" on the wider rim.

Without measuring them after they are fitted the same would apply for different size tyres on those rims. Even then, who knows? Unless someone has done this already and has proof I'd go same size front and rear.

Link to comment
https://www.sau.com.au/forums/topic/14208-gtr-wheels/#findComment-286171
Share on other sites
  • 4 weeks later...
no_gtr_yet Enthusiast

no_gtr_yet

Posted
Posted

could different widths cause a problem via aspect ratio??

eg 225/50/16

radius= (16/2)*2.54+(225*0.5)=315.7mm

rolling circumference = 2*3.1415*315.7

=1982mm

245/50/16

radius= (16/2)*2.54+(245*0.5)=325.7

rolling circumference = 2*3.1415*325.7

=2045mm

% difference =(2045-1982)/2045*100

=3%

Is this why datsuns have the same size tires front to rear. Volkswagons on the other hand 993 911 turbos have mixed aspect ratio tires due to their different tire widths. 40 series front and 35 rear but dont quote me

thoughts ??????

Link to comment
https://www.sau.com.au/forums/topic/14208-gtr-wheels/#findComment-333496
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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By MBS206 · Posted

      Why are people so insistent on making dirty water?!
    • Dose Pipe Sutututu
      Duncan's V37.......race car?

      By Dose Pipe Sutututu · Posted

      Fark what are the changes of that snapping like that, clean. Nek minnit, custom radiator goes in, with built in oil cooler like those discontinued PWR ones from yesterdeacades ago
    • Duncan
      7 Speed Auto transmission fluid change (Skyline, Q50, Q60, Fuga, Q70, A62 Titan and probably heaps of others including Navara...)

      By Duncan · Posted

      I thought I'd do a write up on an auto transmission fluid change for a the nissan 7 speed Automatic. At some stage the genius engineers decided that the fluid in the trans was "for the life of the transmission", (which seems kind of self supporting to me) and removed the dip stick and fill tube (funnily enough there is still a casting for it). Anyway, for this job you do need 2 specialist tools in addition to regular hand tools, jack and good chassis stands. You need a way to pump fluid up to the transmission; I got one of these but there are plenty of other options: https://www.ebay.com.au/itm/364584087070 Don't trust the generic listing though, it does not come with the required adapter for the Nissan 7 Speed. You need one of these, can't do the job without it: https://navarapart.com.au/product/genuine-nissan-patrol-y62-d23-np300-navara-re7-dipstick-fill-connector1 You need a heap of compatible transmission oil. Could be Nissan, could be anything else rated for Nissan Matic S. You need at least 10 litres, I had 15 to give it a better flush... Also, you need some biiig oil catch trays, at least one of these, or bigger if possible (volume was fine, size was very marginal): https://autobarn.com.au/ab/Autobarn-Category/Tools-%26-Garage/Specialty-Tools/Oil-Service/Garage-Tough-Oil-Drain-Pan-Black-16L---GT1068/p/TO03191 Finally, a measuring jug is very useful if your pump does not have volumes marked on it, I got a 6l one: https://www.repco.com.au/oils-fluids/fluid-accessories/measuring-jugs/penrite-measuring-jug-6l-pmj006/p/A5322648 Oh, and gloves.....this stuff is horrible (not as bad as diff oil, but getting there) ....First, jack up your car.....
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      So I mentioned the apprentice, @LachyK helped take the bonnet off. We just undid the nuts on the hinges and unclipped the gas struts, then pulled the bonnet back a little as the front was catching on the front bar.  I had a good look at everything today and have removed the rams, repaired/reset the hinges and bolted it back together like it never happened. I'll do a separate write up on the repair, and I also removed the poppers from the Fuga today too to save grief down the road.....as said above it is at least $5k to repair retail. I'm also happier about my ability to prepare a race car, and less happy about Nis-nault's engineering (I can hear @GTSBoy sAfrican Americaning) because the top hose of the radiator didn't slip off.......it snapped clean off. By practice I put the hose clamp hard up against the flare on a neck to make it least likely to ever move (thanks @Neil!). I guess that puts a little more pressure on the end of the pipe as it is further away from the rad, but still, that is pretty shit. I've put it back on for now as there was a fair bit of neck still there, but obviously there is no lip on the neck any more so I don't think I'll track it again until I have a new rad. Speaking of which....more research required. It looks like Koyo makes a standard size radiator in ally which I'll grab in the meantime, but I really want something thicker so might have to go custom in the medium term (ouch) Coolant still needs a refill and I have the pressure tester on it over night, but other than a wash down of the engine bay it seems alright. And @MBS206 noted something noisy on the front of the engine and I think I agree....time for a new accessory belt and tensioners I think.
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      our good friends at nismo make a diff for it, I have one (and a spare housing to put the centre in) on the way. https://www.nismo.co.jp/products/web_catalogue/lsd/mechanical_lsd_v37.html AMS also make a helical one, but I prefer mechanical for track use in 2wd (I do run a quaife in the front, but not rear of the R32)
×
×
  • Create New...