Silvia Club of NSW

Why drive when you can drift?
It is currently Fri Nov 01, 2024 10:37 am

All times are UTC + 10 hours [ DST ]




Post new topic Reply to topic  [ 13 posts ] 
Author Message
PostPosted: Thu Jan 18, 2007 11:35 pm 
Offline
TO4

Joined: Sun May 14, 2006 6:37 pm
Posts: 230
Car: s15
Hi guys,

I need to change my rears and was wondering what would be the best size in your opinion?

Currently I have 235/40/17, should I keep this size or should I pick another one?

Cheers
Kostya


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Thu Jan 18, 2007 11:55 pm 
Offline
T88
User avatar

Joined: Tue Mar 11, 2003 1:46 pm
Posts: 764
Location: sydney
Car: Jap Spec S15
i have 235/45/17 on my rims at the rear, got a S15 there is also a tyre calculator in the technical area on the main index of the site...


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Fri Jan 19, 2007 7:33 am 
Offline
Admin Team
Admin Team
User avatar

Joined: Sun Aug 03, 2003 3:27 pm
Posts: 3870
Location: here
Car: Hello Kitty!
I wouldn't go over a 225 on an 8 inch rim. Any smaller and it will be a bit stretched (which is ok up to a point), Any bigger and it will start to bulge out a bit (which i'm not a fan of).

_________________
meh


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Fri Jan 19, 2007 11:52 am 
Offline
Banned
User avatar

Joined: Thu Jan 22, 2004 12:12 am
Posts: 3561
Location: 127.0.0.1
Car: 1991 RPS13 180SX
235s sit with square sidewalls on an 8" wide rim.

235/40/17 will be slightly smaller than stock rolling diametre, whereas a 235/45/17 will be slightly larger.

I use 235/45/17 personally.


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Fri Jan 19, 2007 1:03 pm 
Offline
Banned
User avatar

Joined: Fri Apr 12, 2002 11:00 am
Posts: 5993
Location: 2166Reppin'
Car: S13 Silvia S-tune
235/45/17 - as the local falcodores use this size alot, should prove to be easier in find the right tyre as its common.

_________________
Image
You know who we be, N.A love for the S one three
S R twenty DE yo, will f**k on vtec like i f**k them hoes


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Fri Jan 19, 2007 6:44 pm 
Offline
TO4

Joined: Sun May 14, 2006 6:37 pm
Posts: 230
Car: s15
but I guess 235/40 wpuld handle better than 235/45 right?


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Fri Jan 19, 2007 7:54 pm 
Offline
Banned
User avatar

Joined: Fri Apr 12, 2002 11:00 am
Posts: 5993
Location: 2166Reppin'
Car: S13 Silvia S-tune
There are other things you can look at into tyre performance first, rather then a 5% decrease in profile size.

You can try buying better compound for a start before anything else

_________________
Image
You know who we be, N.A love for the S one three
S R twenty DE yo, will f**k on vtec like i f**k them hoes


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Fri Jan 19, 2007 7:55 pm 
Offline
Banned
User avatar

Joined: Thu Jan 22, 2004 12:12 am
Posts: 3561
Location: 127.0.0.1
Car: 1991 RPS13 180SX
maybe 0.01% better?


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Sat Jan 20, 2007 3:00 pm 
Offline
Japanese Correspondant

Joined: Sun Aug 06, 2006 11:43 pm
Posts: 140
Car: 180SX
you can go down to 215 on 8" (I have this right now on the fornt of mine) but the sidewalls taper a bit. 235/40 were on before and were just right IMHO. A 45 section gives rubbing problems if you've lowered your car.

Cheers,
Rich


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Sat May 12, 2007 6:40 pm 
Offline
T28 Hybrid
User avatar

Joined: Tue Dec 10, 2002 10:59 pm
Posts: 66
Location: QLD
Car: 97 EK1
Ive found a 235/40/17 feels better on the back than a 235/45/17

_________________
97 EK1


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Tue Jun 05, 2007 8:08 am 
Offline
TO4
User avatar

Joined: Mon Jun 26, 2006 1:43 pm
Posts: 212
Location: sydney,stclair
Car: 180sx
wouldnt a slightly stretched tyre provide better turn in response due to less tyre wall flex at a higher G turning?

_________________
"your teacher's name is krabable?! i've been calling her Krandle!! aWwWw! why didnt anyone tell me!?!"

ll J A T automotive 9826-0869 ll


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Tue Jun 05, 2007 8:44 pm 
Offline
TO4
User avatar

Joined: Sun Nov 13, 2005 11:46 am
Posts: 211
Location: sydney
Car: SR 180
blue180 wrote:
wouldnt a slightly stretched tyre provide better turn in response due to less tyre wall flex at a higher G turning?


Sure would. Ive gone from 225/40/18 on an 8.5" rim to 225/50's on a 16x7.5 rim and the amount of sidewall movement at high speed gets a bit scarey since there was none with the previous stretched tyres on bigger rims


Top
 Profile  
Reply with quote  
 Post subject:
PostPosted: Wed Jun 06, 2007 8:18 am 
Offline
Moderator
Moderator
User avatar

Joined: Mon Sep 08, 2003 11:21 pm
Posts: 5731
Location: Sydney
Car: WGNC34,S14,AE86
that's assuming that you're not overcoming the grip level of the tread itself already.

factory recommended width for an 8" rim is a 235. I run 235/45/R17's all 'round on my wagon,and they work well enough. this is also a common-as size,so they're cheaper to come by.


Justin...

_________________
STI - Made in Texas,not Japan.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ] 

All times are UTC + 10 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group