Max Tyre Width For R32 Gtr Without Rolling The Guards?

[Beer Baron]

DJR is right too, the best bang for buck wheel and tyre package for a 32 on the track is a set of 17X9s somewhere between +18 and +30 with some 235-255 semi slicks on them. there are heaps of wheel and tyre choices in this size. 33 GTR wheels are not bad at 17X9 +30, are forged, sort of light weight, strong and cheap and plentiful. a set of those with some 255 RE55s bridgestones will be good as a set of track wheels. I actually have 3 sets of 17X9s for my 'track 32'. BBS LM GPs for street in +20, Enkei NT-03s for circuit in +18 and weds sport TC-05s in +20 for circuit too.

[nisskid]

no i agree about the handling, just not about the attesa handling tyres with 4mm difference.

nothing wrong with different sized tyres on a GTR, attesa's have a bit of tolerance before its an issue, enough tolerance that u can make almost any stagger in wheel diametre, width or tyre width fit fine on a GTR.

[Beer Baron]

but for the love of god why would you want to? it looks worse. it handles worse. it's less economical. and yes sure you can make it work, but often it doesn't. so why?? and the tolerance is not that much. it's small enough that people have had problems when fitting new fronts with worn rears of the same size even.

[nisskid]

it's small enough that people have had problems when fitting new fronts with worn rears of the same size even.

any evidence of this?

im not saying u should, im saying u can, pretty big difference.

[djr81]

u could go 245's on R32 GTR rims if u wanted, although i probably wouldnt reccomend it for circuit. but it depends on the tyres, if ur running semis with really hard sidewalls u can run 235's comfortably at the track without too much sidewall flex.

for a R32 GTR id be trying for a 17x10 +30 with a 255/40 at the rear, and a 17x9 +25 with a 235/45 at the front.

im not saying u should, im saying u can, pretty big difference.

Sounded like a recommendation.

Teh Baron is right. There is no good reason to use different tyres front & rear. There are a number of good reasons not to.

[Beer Baron]

so your not recommending it now? just arguing it can be done? well that's a one sided argument. I agreed it could be done in my first post, but that it SHOULDN'T be done.

you agree it can cause awd problems but you want to continue arguing with me.... so if you know it's a bad idea why did you tell him to run 235 fronts and 255 rears? is that the best set-up in your GTR circuit experience? I look at probably in the hundreds of circuit GTRs every year ranging from road cars that do 1 or 2 track days a year, to full on half a million dollar race cars and they ALL use the same size tyres front and rear. but if you know better tell me why it's a good idea. Perhaps they can all improve based on this new revelation.

you keep arguing it can be done. I know it can be done. I acknowledged that in my first post. of course it can be done, but again what's the point? It's like saying you can drive a car with no gearknob. yes it may cause a sore hand. and it may not. but either way it offers no benefit so why would you bother? it is a dumb idea. it's worse performance wise and it MAY cause problems. so why on earth would anyone waste time trying to get it to work, sitting their calculating how to get the same diameter out of different width/profile tyres is a waste of time.

as for evidence of worn/new tyres causing attesa problems, have a search of this forum and you'll find some. or talk to any good GTR mechanic and he will have seen some over the years.

[Beer Baron]

here is a text book case for you. guy bought new rear tyres and fronts were worn. all tyres were the same size etc. car started getting awd faults. when it faulted into 2wd car drove ok. when it was in 4wd car would surge and shudder... what do you reckon the problem was? http://www.skylinesaustralia.com/forums/At...ng-t130266.html

[Moodles2]

I'll look into R33 GTR rims as well, I didn't realise they were 17's

[Risking]

no i agree about the handling, just not about the attesa handling tyres with 4mm difference.

nothing wrong with different sized tyres on a GTR, attesa's have a bit of tolerance before its an issue, enough tolerance that u can make almost any stagger in wheel diametre, width or tyre width fit fine on a GTR.

There is stuff all tolerance when you want the system to work properly.

Been there done that a million times over.

Ill tell you the biggest tire you will fit on an R32 GTR is a 320 wide rear slick and a 300 wide front slick.

[Moodles2]

My main issue with guard rolling is the paintwork, I've never had it done to any cars I've owned before, so I'm alittle worried about disadvantages of getting them done.

[SSHatch]

Not nessisarily true,

I have several GTR's running very different tire sizes and only one of them has this issue.

the VDC system on our Z picks up tread depth diffenernce however im yet to find a GTR thats this picky.

Im running 255/45's and 255/40's on one car with no issues, and another 34 GTR with 265/40's and 265/45's again without any problems.

Only reason tire sizes are different is they all come off different cars in pairs and make do as street tires.

There is stuff all tolerance when you want the system to work properly.

Been there done that a million times over.

Ill tell you the biggest tire you will fit on an R32 GTR is a 320 wide rear slick and a 300 wide front slick.

I just happened to have finished reading the other thread when you posted up here, so

Does this mean that you ended up having issues with those cars that had differing sized tyres front to rear??

I realise that the other post was 3 years ago but just curious as to the complete about face on this one??

I mainly ask as I did also get the occasioal 4WD fault on my GTR just before I replaced a set of rear tyres that were on the wear indicators while the fronts were approximately 75% still. Would flicker and light up the light in the dash just as the car started to roll.

Have not had another fault since putting new tyres on the rear.

[nisskid]

here is a text book case for you. guy bought new rear tyres and fronts were worn. all tyres were the same size etc. car started getting awd faults. when it faulted into 2wd car drove ok. when it was in 4wd car would surge and shudder... what do you reckon the problem was? http://www.skylinesaustralia.com/forums/At...ng-t130266.html

thanks for the link, gave me this quote:

Not nessisarily true,

I have several GTR's running very different tire sizes and only one of them has this issue.

the VDC system on our Z picks up tread depth diffenernce however im yet to find a GTR thats this picky.

Im running 255/45's and 255/40's on one car with no issues, and another 34 GTR with 265/40's and 265/45's again without any problems.

Only reason tire sizes are different is they all come off different cars in pairs and make do as street tires.

maybe risking later down the track had issues? which wouldnt surprise me however as they are a lot larger diferences than what we are talking about here, but still worth the quote.

[nisskid]

Sounded like a recommendation.

Teh Baron is right. There is no good reason to use different tyres front & rear. There are a number of good reasons not to.

yeh and i later took it back and agreed that it wasnt a good balance for handling, whilst keeping with my argument that it wasnt an issue for the ATTESA. i didnt really word it very well, i shouldnt have said "this is what id do" as its not, i was just giving him an idea of what is possible. it wasnt a very clear post i admit.

as i mentioned i was more focused on wheel size/ offset for ability for maximum tyre width, front to rear. i admit i was being fairly conservative with the tyre width, but in fairness i was allowing for a low camber, low ride height setup. in a lot of these cases as mentioned the reason why a lot of these people are able to fit large tyres is because there cars are high enough that ur not compressing the tyre very far if at all into the guard (mainly at the front)

my honest reccomendation would be to roll the guards and go 17x9.5 +20 all round with 255/40's all round. as soon as u go beyond 255 in a 17" ur looking at much bigger $$.

[Risking]

I actually found that despite the system appearing to work okay it was not working at its best.

No damage was ever done but after using an AWD dyno the differance become obvious in the front to rear split compared to what it should have bee.

[sickr33]

i just got my hands on some R34 gtr rims and now i run federal 595's 265 R17 all round

that and some tein HA coilovers

best mod i have ever done it shits all over standard handling

[gtr jet]

Hey guys, sorry to dig up an old thread but I couldn't find anything more recent.

At the moment I'm running 245 wide tyre's on 18x9.5 +12 rims. I need to get wider tyre's and I'm pretty sure I can run 265's without issue but I was wandering what is required to go wider. I see plenty of second hand 275 and 285 wide tyre's for sale but I don't think I can fit them without guard work.

[RBN1]

the street setup for my 32 GTR will be running 18x9.5 TE37's with 265 35.

You will need to roll your guards for them to fit.

Below link has some pics on what the setup will look like.

http://www.skylinesaustralia.com/forums/topic/358190-fs-mlb-bronze-volk-te37-fitted-with-near-new-ku36/

Hey guys, sorry to dig up an old thread but I couldn't find anything more recent.

At the moment I'm running 245 wide tyre's on 18x9.5 +12 rims. I need to get wider tyre's and I'm pretty sure I can run 265's without issue but I was wandering what is required to go wider. I see plenty of second hand 275 and 285 wide tyre's for sale but I don't think I can fit them without guard work.

[gtr jet]

Thanks for that mate. Looks like that's about the limit without some guard work then.

[RBN1]

No worries - forgot to mention my ones are +12 too.

Roll the guards - you know you want to

Thanks for that mate. Looks like that's about the limit without some guard work then.