Prepping for AutoX SM Help! (tire)

JDMFLCL · 11-22-2008, 08:30 AM

So the car i have is a swapped gc with the wrx brake conversion, lowered 1.5" F 1.6" back on prodrive springs with KYB AGX. Im looking for a wheel setup that would be good preferably without rolling, but i could if need be. One setup someone said that would be good is 17x8+48 245/40/17 rolled or 17x7.5+48 225/45/17 unrolled

help? i'd be using direzza Z1 star specs. This is mainly a tire thread, as ive pretty much decided to get the MB weapons or Drag Dr-21's.

* Registered users of the site do not see these ads.

speedyHAM · 11-22-2008, 01:53 PM

The 245's will be faster, but you will have to roll the fenders. The Z1's are a street tire, and for SM you will be giving up a lot of ground on the R-compounds.

If I were in your shoes, I'd get the 17 x 8's and the 245's, as if you decide to get serious and go with R's, you will be able to fit a 275/40/17 on them and still be able to use most of the tire.

JDMFLCL · 11-22-2008, 02:17 PM

how much are r comps, like 250 a piece?

Boxologist · 11-22-2008, 09:48 PM

what an underprepped car...how streetable do u want teh car to be? what do u want to spend money on first?

what wheels do u have now? if u still have the oem 16s, throw entry level Rcomps on that. skip Z1SS if u have not bought them yet. if u still want a new wheel set, make that for the Rcomps. then go to work on ur suspension.

speedyHAM · 11-23-2008, 12:24 AM

Quote:

Originally Posted by JDMFLCL

how much are r comps, like 250 a piece?

Completely depends on the size. 225/50R16 V710's were $210 each last set I bought. The 275/35R15 A6's I'm going to run next year are $244 each. Compare that to star specs at $127 each for the 225's and $235 each for comparably wide 275's. You are getting a cheaper tire that is not nearly as fast.

On a SM car the suspension is pretty free. You can setup the car to really take advantage of the higher grip of an R-comp. A well setup car will be around 3 seconds a lap faster on R-comps than street tires. It's definitely a trade off between $$$ and time.

JDMFLCL · 11-24-2008, 04:54 PM

I kind of forgot about just sticking R comps on what i already have.

Here is my full suspension setup
24 FSB, 18mm RSB
Spring/strut combo
Front and rear strut towers
Kartboy Endlinks
wrx brake conversion

Am i really just better off throwing r comps on the WRX stockers?

speedyHAM · 11-24-2008, 06:44 PM

Quote:

Originally Posted by JDMFLCL

Am i really just better off throwing r comps on the WRX stockers?

YES!!

I run in XP and until this year I was running stock WRX wheels with R-comps. Much faster than any street tire, even though I wasn't running as wide of a tire.

JDMFLCL · 11-25-2008, 07:49 AM

alright in that case, im thinking of buying either a cheap used set of WRX stockers, or just a slightly wider 16x7 with R comps

thanks for hte help

rougeben83 · 11-25-2008, 03:38 PM

ah dammit, I have some 16x7 2.5RS wheels (5 spoke) with some Hoosier A6's (225/50) that I've been planning to sell, but I'm away on vacation until January...

JDMFLCL · 11-25-2008, 06:55 PM

that works for me

xcdhridr · 11-26-2008, 12:09 AM

like i said on pirates... learn on street tires, be even better on race tires... You'll likely save money on tires in the end...

11-22-2008, 08:30 AM	#1
JDMFLCL Scooby Specialist Member#: 180513 Join Date: May 2008 Chapter/Region: RMIC Location: Super Eurobeat Vol 193..Denver Vehicle: Baby Baby C'mon! Looka Bomba! 99 JDM GM8	Prepping for AutoX SM Help! (tire) So the car i have is a swapped gc with the wrx brake conversion, lowered 1.5" F 1.6" back on prodrive springs with KYB AGX. Im looking for a wheel setup that would be good preferably without rolling, but i could if need be. One setup someone said that would be good is 17x8+48 245/40/17 rolled or 17x7.5+48 225/45/17 unrolled help? i'd be using direzza Z1 star specs. This is mainly a tire thread, as ive pretty much decided to get the MB weapons or Drag Dr-21's. * Registered users of the site do not see these ads.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
AutoX SM class 04 STi build...Discussion	Dirty25RS	Autocross	101	09-20-2009 10:22 PM
FS: 2000 Civic Si, prepped for autox	ButtDyno	MAIC Private Classifieds	4	05-12-2006 03:50 PM
Skuttlemotorsports, AutoX SM win with vids!	skuttledude	Motorsports	13	06-25-2005 09:15 AM
Engine Swaps or Engine Mods in AutoX SM class...	ScreaminFast	Motorsports	13	12-19-2003 02:08 AM
Scca Autox Sm Wrx	AWMIII	Private Vehicle 'For Sale' Classifieds	14	08-28-2003 09:41 AM

11-22-2008, 01:53 PM	#2
speedyHAM Scooby Specialist Member#: 48377 Join Date: Nov 2003 Chapter/Region: MWSOC Location: "They eat fish soaked in lye" Vehicle: 1996 Gutted, built XP class Impreza L	The 245's will be faster, but you will have to roll the fenders. The Z1's are a street tire, and for SM you will be giving up a lot of ground on the R-compounds. If I were in your shoes, I'd get the 17 x 8's and the 245's, as if you decide to get serious and go with R's, you will be able to fit a 275/40/17 on them and still be able to use most of the tire.

11-22-2008, 02:17 PM	#3
JDMFLCL Scooby Specialist Member#: 180513 Join Date: May 2008 Chapter/Region: RMIC Location: Super Eurobeat Vol 193..Denver Vehicle: Baby Baby C'mon! Looka Bomba! 99 JDM GM8	how much are r comps, like 250 a piece?

11-22-2008, 09:48 PM	#4
Boxologist Scooby Guru Member#: 21118 Join Date: Jul 2002 Chapter/Region: Tri-State Location: LI, NY	what an underprepped car...how streetable do u want teh car to be? what do u want to spend money on first? what wheels do u have now? if u still have the oem 16s, throw entry level Rcomps on that. skip Z1SS if u have not bought them yet. if u still want a new wheel set, make that for the Rcomps. then go to work on ur suspension.

11-24-2008, 04:54 PM	#6
JDMFLCL Scooby Specialist Member#: 180513 Join Date: May 2008 Chapter/Region: RMIC Location: Super Eurobeat Vol 193..Denver Vehicle: Baby Baby C'mon! Looka Bomba! 99 JDM GM8	I kind of forgot about just sticking R comps on what i already have. Here is my full suspension setup 24 FSB, 18mm RSB Spring/strut combo Front and rear strut towers Kartboy Endlinks wrx brake conversion Am i really just better off throwing r comps on the WRX stockers?

11-25-2008, 07:49 AM	#8
JDMFLCL Scooby Specialist Member#: 180513 Join Date: May 2008 Chapter/Region: RMIC Location: Super Eurobeat Vol 193..Denver Vehicle: Baby Baby C'mon! Looka Bomba! 99 JDM GM8	alright in that case, im thinking of buying either a cheap used set of WRX stockers, or just a slightly wider 16x7 with R comps thanks for hte help

11-25-2008, 03:38 PM	#9
rougeben83 Scooby Guru Member#: 115154 Join Date: May 2006 Chapter/Region: MWSOC Location: NYC Vehicle: 2003 Legacy L Turbo silver	ah dammit, I have some 16x7 2.5RS wheels (5 spoke) with some Hoosier A6's (225/50) that I've been planning to sell, but I'm away on vacation until January...

11-25-2008, 06:55 PM	#10
JDMFLCL Scooby Specialist Member#: 180513 Join Date: May 2008 Chapter/Region: RMIC Location: Super Eurobeat Vol 193..Denver Vehicle: Baby Baby C'mon! Looka Bomba! 99 JDM GM8	that works for me

11-26-2008, 12:09 AM	#11
xcdhridr Scooby Specialist Member#: 58865 Join Date: Apr 2004 Chapter/Region: RMIC Location: CO Vehicle: 2004 WRX 99ESP - Drew =)	like i said on pirates... learn on street tires, be even better on race tires... You'll likely save money on tires in the end...