R32GTR 18" wheels - what tire size?

[Ronin 09]

Did a search, didn't turn up anything solid…

For you guys running 18's on an R32GTR, can you please post:

1. wheel size (inc offset and width)

2. tyre size (inc brand)

I want to know what options I have for a set of Volk TE37s 18 x 9.5s +12 in terms of tyres.

I was thinking 245/40/18's or 265/35/18.

*The stock 225/50/16's have a rolling diameter of 631mm

*245/40/18's have a rolling diameter of 653mm

*265/35/18's have a rolling diameter of 643mm

I don’t really want to roll guards (but will if I have to), nor do I want to have *much* rubbing...

Which will be a better fit?

Cheers

[Sydneykid]

643 mm versus 631 mm = 2% conservative speedo readings. That would just about offset the factory optimistic (high) readings.

I have no problems with fitting 255's, so 265's would be fine.

I run 8" with 35 mm offset, so that's 137 mm out and 66 mm in.

A 9.5" with 12 mm offset is 133 mm out and 108 mm in.

Rolling the guards would not be required, the rims are 4 mm further in than the 8's but the tyres are 10 mm wider. So thats 5mm, further out, making the 265 tyres pretty much in the same spot outwards as the 255's.

Inwards clearance is therefore your only issue.

[neil_se]

Something doesn't sound right there SK, a +12 9.5" should stick out a lot more than a +35 8".According to my offset calculator:

"The clearance from stut housing to the inside of the wheel will be 4mm MORE

The outside edge of the wheel will EXTEND an extra 42mm"

[[WLDCRD]]

dont know about the offset but i am running 265/35/18 on all four. Falken 326 (i wouldnt recommend these to anyone - damn tite ass previous owner)

[ferni]

yeah those falkens are shit hey - had them on my car when i got them, just take it easy, i nearly killed myself with those tyres!

[cowie165]

Unsure about offset. 18x9.5, 245/40's. The car is lowered a bit, and the rubber *just* clears the inside of the front guards. A greater profile wouldn't fit. And if you care, 245 on 9.5 leaves LOTS of room - if I did a gutter park, I'd prob scrape the rim first. That said, 245's tramline enough that I find it annoying - 265's may be worse.

Tyres: Yoko A539's + Federals (that hold better that you'd expect, unsure of model)

Mark

[Sydneykid]

Something doesn't sound right there SK, a +12 9.5" should stick out a lot more than a +35 8".According to my offset calculator:

"The clearance from stut housing to the inside of the wheel will be 4mm MORE

The outside edge of the wheel will EXTEND an extra 42mm"

Let's do the numbers;

8" = 203 mm

Centre is 203 / 2 = 101.5mm

+ 35 = 136.5 mm out

Subtract 136.5 from 203 = 66.6 mm in

9.5" = 241.3 mm

Centre is 241.3 / 2 = 120.7mm

+12 = 132.7 mm out

Subtract 132.7 from 241.3 = 108.6 mm in

I think that comparison you are doing is maybe -35 to -12.

[Ronin 09]

Thanks for the replies guys, I think that 265/35 would be the go...

I think I confused myself in that R34 GTRs run 275/40/18's...

When I used the tire calculator, the 265/35s are only marginally taller.

[[WLDCRD]]

ferni....yeah i know what you mean. i turned right into a street when there was light rain, not speeding, not accelertaing, and the thing understeered and i almostdrove into the gutter! not looking forward to winter!

[neil_se]

Ahh, its all good SK, just got your definition of "out" and "in" the wrong way in my head, by "out" you mean backspace.

[Roy]

Marcus, im guessing you want 18s for a brake upgrade and also looks etc.

Id suggest sticking with 17s, you can fit just a wide a tyre on them , are always going to be lighter, cheaper to buy, and most importantly that cheater rubber you use on that cheater car is a damn site cheaper in 17s then 18s:)

With the right caliper and the right rim you will even be able to fit a 343 x 32mm rotor in there. Worst case scenario a 330 x 32mm rotor...combined with a nice alloy hat, larger diam and good curved vane design you should find the car stopping more consistantly with lower brake temps.

If you go 18s and want to run 355mm rotors etc, remember that a caliper that can saddle such a large rotor can also be a bit more expensive...but imagine how nice the car would stop with 355-365mm rotors and 18" semis:whackit:

LOL...move over and let me drive:)

[wrxhoon]

Let's do the numbers;

8" = 203 mm

Centre is 203 / 2 = 101.5mm

+ 35 = 136.5 mm out

Subtract 136.5 from 203 = 66.6 mm in

9.5" = 241.3 mm

Centre is 241.3 / 2 = 120.7mm

+12 = 132.7 mm out

Subtract 132.7 from 241.3 = 108.6 mm in

I think that comparison you are doing is maybe -35 to -12.

S.K. you got it the wrong way around .

+ 35 means 35 mm offset to the inside , so + 12 will stick out more than + 35 .

In the example above +12 will be 132.7 mm in and 108.6 mm out . +35 will be 136.5 mm in and 66.5 mm out .

[neil_se]

I think by "out" he means the distance that the mounting surface is from the inside of the rim, and "in" being the distance to the face from the lip of the rim.

[Ronin 09]

Marcus, im guessing you want 18s for a brake upgrade and also looks etc.  

Id suggest sticking with 17s, you can fit just a wide a tyre on them ,  are always going to be lighter, cheaper to buy, and most importantly that cheater rubber you use on that cheater car is a damn site cheaper in 17s then 18s:)

With the right caliper and the right rim you will even be able to fit a 343 x 32mm rotor in there. Worst case scenario a 330 x 32mm rotor...combined with a nice alloy hat, larger diam and good curved vane design you should find the car stopping more consistantly with lower brake temps.  

If you go 18s and want to run 355mm rotors etc, remember that a caliper that can saddle such a large rotor can also be a bit more expensive...but imagine how nice the car would stop with 355-365mm rotors and 18" semis

LOL...move over and let me drive:)

If you're going to cheat, do it properly! I was actually considering grabbing the GTR 17's from 2.06L Stacey...

But damn i love volks...

[Sydneykid]

S.K. you got it the wrong way around .

+ 35 means 35 mm offset to the inside , so + 12 will stick out more than + 35 .

In the example above +12 will be 132.7 mm in and 108.6 mm out  . +35 will be 136.5 mm in and 66.5 mm out .

In my terminology + = positive

Hence +12 = positive 12 mm offset

I want to know what options I have for a set of Volk TE37s 18 x 9.5s +12 in terms of tyres.

[Sydneykid]

I should clarify that the race car (with the +35 X 8" rims) has 40 mm spacers.

[l005e]

hey do u know if i could fit these on my r32gtr

18x10.5 Offset -10

18X12 Offset -20

thanks

[Ronin 09]

hey do u know if i could fit these on my r32gtr

18x10.5 Offset -10

18X12 Offset -20  

thanks

Without flares, no chance. AFAIK 18x9.5 +12 is about as far out from the hub as you will be able to get away without the wheels protruding the guards.

That will be some FAT dish

[williamsf1]

after some really quick help!!!!

R32 GTR with R34 GTR rims.... what tyre DOES fit.... who has them on there car?

Im looking at running the 265 35 18 RE55.....

if anyone knows for sure please reply

[Ronin 09]

after some really quick help!!!!

R32 GTR with R34 GTR rims.... what tyre DOES fit.... who has them on there car?

Im looking at running the 265 35 18 RE55.....

if anyone knows for sure please reply

I am 99% sure they will fit fine. The stock 245.40.18's fit with plenty of space, so should be A-OK with the 265's

I will be running 265.35.18 RE55s' on my 18's when I can pay them off too