Notices
Autocross/Road SCCA Solo II, SCCA Club Racing, Redline Track Events, Speed Trial, Speed Ventures, Grand-Am Cup, JGTC, Procar Australia

RPF1 18x9.5 square with ST40 355mm

Thread Tools
 
Search this Thread
 
Old 01-21-2014, 05:40 PM
  #1  
francisyang
Registered User
Thread Starter
 
francisyang's Avatar
 
Join Date: Aug 2004
Location: ca
Posts: 32
Likes: 0
Received 0 Likes on 0 Posts
Default RPF1 18x9.5 square with ST40 355mm

Hi Guys,

I already had ST40 355x32mm front BBK and ST22 for the rear with stock wheels. Now I am trying to get RPF1 18x9.5 (square setup, 265x35 tires for track) with 15mm offset (or should I use a different offset?), but I do not know if the RPF1 would clear my ST40 355mm. I did a search but could not find this combination.

I also have KW V2 at the highest height, and SPC front camber kit with around -2.5 degree (just got the camber kit, still trying to find the best setting). Not sure the KW and SPC here would also impact the wheel/BBK clearance. Please let me know...


Thanks
Francis
Old 01-21-2014, 07:18 PM
  #2  
SE5spd
Registered User
iTrader: (17)
 
SE5spd's Avatar
 
Join Date: Jul 2009
Location: around
Posts: 4,114
Likes: 0
Received 0 Likes on 0 Posts
Default

why not go with 10.5" square since you already have camber adjustments?
Old 01-22-2014, 08:52 AM
  #3  
Lubo
Registered User
iTrader: (3)
 
Lubo's Avatar
 
Join Date: Jan 2012
Location: Brooklyn NY
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by SE5spd
why not go with 10.5" square since you already have camber adjustments?
go with 10.5" unless class rules prohibit this size. You can still run your 265s on 10.5" wheel and it will give you more freedom if you decided to go to 275s or 285s at later point.
Old 01-22-2014, 01:02 PM
  #4  
ericjackson
New Member
iTrader: (2)
 
ericjackson's Avatar
 
Join Date: Sep 2005
Location: memphis tn
Posts: 1,255
Likes: 0
Received 0 Likes on 0 Posts
Default

i dont think you will have clearance issues, but you can still run a 285 on a 9.5" wheel. I will be going 9.5 to stay under the 10" limit for spec Z
Old 01-22-2014, 02:22 PM
  #5  
francisyang
Registered User
Thread Starter
 
francisyang's Avatar
 
Join Date: Aug 2004
Location: ca
Posts: 32
Likes: 0
Received 0 Likes on 0 Posts
Default

Guys, thanks for the reply. regarding the question on why not 10.5, as ericjackson mentioned, I can still go 285 with 9.5, so there is really no need to go that wide wheels.

I assume that we do not need spacers for 9.5X18 wheels with 265/35 or 275/35 tires, right?
Old 01-23-2014, 02:18 AM
  #6  
jdmlove1
New Member
 
jdmlove1's Avatar
 
Join Date: Jul 2012
Location: Bahrain
Posts: 900
Received 4 Likes on 4 Posts
Default

^^^ no need for spacers, 15 offset is more than enough for your BBK.

i run 9.5 square setup for AutoX, with 265/40/18 and they look perfect on my wheels, not stretch and not fat.
Old 01-24-2014, 04:46 PM
  #7  
Lubo
Registered User
iTrader: (3)
 
Lubo's Avatar
 
Join Date: Jan 2012
Location: Brooklyn NY
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by francisyang
Guys, thanks for the reply. regarding the question on why not 10.5, as ericjackson mentioned, I can still go 285 with 9.5, so there is really no need to go that wide wheels.

I assume that we do not need spacers for 9.5X18 wheels with 265/35 or 275/35 tires, right?
Depending on the tire. 285s will be at the limit of squeezing onto 9.5" wheel. This will result in a little bit more sloppy feel, and delayed response. If you even think there is a slight possibility that you will run 285s in the future go with wider wheel. 265s are a perfect shoe in for 9.5".

I've run up to 295s on my 10.5" in the past but I am downsizing back to 275s as I saw a marginal increase in grip and the tire felt a lot better when it was narrower.
Old 01-25-2014, 09:32 AM
  #8  
DankZ07
Registered User
iTrader: (7)
 
DankZ07's Avatar
 
Join Date: Sep 2009
Location: Bham, AL
Posts: 354
Likes: 0
Received 1 Like on 1 Post
Default

I barely clear with the Akebono 14" kit. 9.5 width +15
Old 01-25-2014, 06:28 PM
  #9  
mcarther101
Registered User
iTrader: (8)
 
mcarther101's Avatar
 
Join Date: Mar 2008
Location: Pensacola, FL
Posts: 1,492
Received 4 Likes on 4 Posts
Default

I can let you know in about a month lol... my RPF1's are in military storage lol... I have the same 18x9.5 +15's, but I didn't mount them yet... I didn't think there would be any clearance issues, I have Stoptech 355mm BBK on all 4 corners too.
Old 01-27-2014, 05:16 PM
  #10  
francisyang
Registered User
Thread Starter
 
francisyang's Avatar
 
Join Date: Aug 2004
Location: ca
Posts: 32
Likes: 0
Received 0 Likes on 0 Posts
Default

I have ordered 18x9.5 +15, will be here this week, and will let you guys know the clearance for ST40 355mm
Old 01-28-2014, 10:29 AM
  #11  
ericjackson
New Member
iTrader: (2)
 
ericjackson's Avatar
 
Join Date: Sep 2005
Location: memphis tn
Posts: 1,255
Likes: 0
Received 0 Likes on 0 Posts
Default

^ if they dont fit you can sell them to me for cheap! heh
Old 02-02-2014, 03:14 PM
  #12  
francisyang
Registered User
Thread Starter
 
francisyang's Avatar
 
Join Date: Aug 2004
Location: ca
Posts: 32
Likes: 0
Received 0 Likes on 0 Posts
Default

wheels installed, the clearance is more than an inch!
end of thread
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Rev_Night
Wheels & Tires
30
11-07-2020 06:00 PM
Dark Knight
Wheels Tires
7
11-11-2015 08:40 PM
ThreeFiveZero Z
Competition Items - Archive
3
09-12-2015 04:33 PM



Quick Reply: RPF1 18x9.5 square with ST40 355mm



All times are GMT -8. The time now is 11:36 PM.