19" Rims Vs 18" Bs Stock -?

[CruisingFast]

Evening all,

I've got a 260RS and was curious to know if anyone else out there has gone down the road of fitting a set of 19" rims?

I've had a look at all the numbers and this is what I know so far from looking at the original C34 16" rights through to 18" and now 19".

C34 205/60P/16" which gives a rolling radius 204.96cm's total diameter 65.24 Sidewall height 12.3

My current 18" 235/40/18" gives a rolling radius 202.7cm's total diameter 64.52 Sidewall height 9.4

Just curious to know if anyone else has done this and whether the suspension is likely to suffer with the lower profile tyre.

The other thing that gets me is the C34 sticker has two sets of numbers, the lower numbers are below, to me that's saying either the front and rear are different or you can select either or tyre choice for the stock rims - the latter seems more probable but then again the BBS rims on the 260RS were different sizes too. That said I'm currently rolling on the same sized 18" wheel and tyre. Any help for someone who is trying to work things out for themselves is greatly appreciated!

C34 225/50/16 I put that into a calculator and got a rolling radius 198.36cm's total diameter 63.14 Sidewall height 11.25

The C34 numbers came from here: http://www.skylinesaustralia.com/forums/St...ons-t92233.html

[darrinspencer]

I run the suspension and rear cradle width as a 260rs

My rims are 19x9.5 +12 with 245/35/19 tyres

Just make sure the rims are "A" disk (at least on the front) so they clear your brembo brakes

What ever tyre size you pick, the only important thing to maintain is the SAME rolling diameter front and rear. Keeps the AWD system happy.

[M I K E]

Just make sure the rims are "A" disk (at least on the front) so they clear your brembo brakes

don't do this if you are buying work rims.

each manufacturer has different 'codes' for disk types

ie your volks are A-disk (maximum caliper clearance) and clear your brembos, but if you bought an A-disk wheel from work wheels you would get standard caliper clearance in their range and they would not clear the front brembos - you would need R-disk which is their term for caliper clearance.

just make sure whatever wheels you get, the fronts have adequate clearance for big brakes. the rears it doesn't matter (unless you want to rotate front to rear for tyre wear)

i'm also running the narrower cradle in my stag which is also fitted with r33gtr brembos and i have 18x9.5+2 R-disk (maximum caliper clearance) fronts and 18x9.5+1 O-disk rears (minimum caliper clearance, maximum dish). probably on the extreme side of fitment though

[CruisingFast]

Just re read my message - was in a hurry on my way out to a touch game.

The link that works....

http://www.skylinesaustralia.com/forums/St...ons-t92233.html

Also, with offset I read this from the same link above from Sydney Kid

"The only Stagea S1 with 17" rims standard I have seen is the 260RS. They utilise the standard R33GTR rims (what I have on mine). They are 17 X 9 X 30 offset with 245/45/17 tyres."

Does the rim manufacturer matter so much if you have a larger offset? I thought this is what helped with the caliper clearance on the brembo's. I'm looking at a couple of different options, Enkei rp03's if I can find them or maybe a set of rp05's if they aren't too exxy.

The works rims have factored in a little too just waiting to hear on the above.

Was thinking of going for 19" 9.5 +30 offset. What profile tyre and manufacturer/brand are you running?

Does the 19" make it much harsher to drive or are they still good for giving a bit of stick around the mountains? 18" with the profiles I mentioned earlier are smooth as, very direct in the steering and just great overall in the handling... that is until you find a really tight corner and the ass starts to pull before you put your foot back into it - the extra weight through the rear and longer wheel base has nearly brought me unstuck a few times so I just want to be sure I'm not going to mess with the handling if I go 19" rims.

[CruisingFast]

Oh and for anyone who wants to know where I'm getting my numbers from, I should credit the source, the calculator is from here: http://www.kouki.co.uk/utilities/visual-tyre-size-calculator

I put SydneyKids number in to see what they came up, same as the stock C34 pretty much.

17 X 9 X 30 offset with 245/45/17 tyres

rolling radius 204.93 cm total diameter 65.23 cm Sidewall height 11.03 cm

[darrinspencer]

Ignore the offsets of that sydneykid has quoted. His car is a auto which has a 50mm wider rear cradlle in it than your 260rs.

If you were to run the wheels you listed 19x9.5 +30 they will not fit in the rears as they will hit the struts.

If you want to keep your wheels inside the rear guards with minimal rear camber go no wider than 9.5 with around +12 offset

Some people on here have different ideas (MIKE and myself for example) to what fits and what they think looks good etc. so you will not get a exact answer to what fits

Let us know how you want the rims to sit, what camber you want to run, ride height and tyre size and then we can give you a better idea as to what "fits"

[M I K E]

Some people on here have different ideas (MIKE and myself for example) to what fits and what they think looks good etc. so you will not get a exact answer to what fits

spot on

taste is subjective

[pipster11]

i've got pics of my car wearing some 20's that the previous owner had on b4 i bought the car

can upload if you want

the tires are rubber band thin so i doubt it was comfortable

[lachlanw]

260 RS does not come with r33 gtr rims

it comes with 17x7 +30 on the front and 17x7 +20 on the rear

[Blizzerd]

so your telling me, r34 gtr wheels will NOT fit on a manual s2 stagea due to the rear wheels hitting the struts?

[darrinspencer]

so your telling me, r34 gtr wheels will NOT fit on a manual s2 stagea due to the rear wheels hitting the struts?

No

GTR rims are 9" wide not 9.5" as quoted above. They will have a bit more clearance

They will be close, depending on what struts you have and what camber you run

[Blizzerd]

No

GTR rims are 9" wide not 9.5" as quoted above. They will have a bit more clearance

They will be close, depending on what struts you have and what camber you run

cool cool will have to fit them as soon as i get my car

they are 18x9 +30 i think....

[CruisingFast]

I've taken off one of my rims and have taken some measurements of what I had.

The 18" rim is 9" wide, the offset is stamped on the inside as 38.

I was thinking of going 9.5" but am starting to think sticking with a 9" would be better to save on weight on the rim and the extra rubber.

Not sure if I worked out the ride height correctly but from the centre cap I measured from the floor to the top of the wheel arch which was 27", from the floor to the top of the wheel it measured 24.5" (the last figure could be out a little as I didn't have something flat to stick on top of the wheel to put against the measuring tape.

From what I was told going +30 offset on a 9.5" rim would hit the suspension, that appears certain given the extra .5" is close to 13mm which together would make 43mm total (7 more than the 38 I already have).

So If I get a 9" and go for a +30 offset what difference would the 8mm less have overall to whats currently fitted. I noticed the rear rim is inset more to the outside of the guard and with the front I guess a lower offset would bring this out another 8mm closer to the guard. I haven't read up on the camber parts of the equation but would imagine that 8mm difference could pose an issue if it was to rub on the outside of the front guard.

I really should read up more on this stuff and not rely on other people to help with this, thanks to all who have contributed thus far. I just want to be certain I'm not going to be ordering the wrong rim as I'm sourcing these from a supplier in the US who seems to have a good stock of enkei rims which is now certain I'll be getting as all the other brands are made to order with a 10-12 week delay.

[CruisingFast]

Doesn't look like a 9" is available in the rim I'm looking at getting.

Found this website which only has 8.5" and 9.5" sizes available in the Enkei RP03.

http://www.stillen.com/product.asp?id=ENKE...;c=WH&m=all

The smallest offset number is 22 which given then extra .5" of rim would make it 35mm when compared to the 38mm I had.

Have I worked this out right? Looking at ordering the rims this week if everything checks out okay.

Edited July 6, 2010 by CruisingFast