Subaru Impreza GC8 & RS Forum & Community banner

1 - 18 of 18 Posts

·
Registered
Joined
·
150 Posts
Discussion Starter #1
I'm working on Getting my OBS to be a H-stock competitor(sp?) and i have been looking at the hooser tires but can't deside between the
205/50-15 and the 225/50-15

on of my friends says the 225/50-15 wont fit on stock 15" rims.

What sizes is everybody runnning and does anyone have any experince with auto-xing the 2.2 motor in H-Stock?

Erik Schmidt
Flooredsubaru
:confused:
 

·
Premium Member
overdeveloped beater
Joined
·
8,335 Posts
For your stock wheel size, I would probably stick with the 205's.

Only because the 225 Hoosiers are pretty wide...wider than other makers' 225. They will work on a 6" wheel, but you will sacrifice some transitional response in favor of ultimate grip. Miata racers have been using 225's on their 6" wheels far too long to make the "they won't fit" rumour just that...a rumour.

Since you already have all the grip you need, the 205 will be a little lighter, a little more suited for slaloms and give up very little in the long hard sweepers.

As for racing a 2.2, I haven't. I've raced my 1.8 in HS and DSP against the RS's and such with some success. You just have to drive it to it's absolute limit. Keep the revs up 'cuz the torque isn't there to pull you out of a mistake. Stay off the brake as much as possible or Left Foot Brake as much as you can.

Smoothness is key, especially in HS where the cars are all light. Take advantage of the grip by using the gas throughout the corners and minimize actions that sacrifice momentum.

Hope this helps.
 

·
Registered
2000 Blue Ridge Pearl Subaru I
Joined
·
294 Posts
Definitely stay with the 205's for all the reasons Jay mentioned. The added grip of the 225's is quite insignificant and when you factor in the added weight of the 225's, the 205's are the way to go.
 

·
Registered
Joined
·
410 Posts
I'm actually autocrossing with 195/50-15s on my 99RS... :lol: (On 15x6 Subaru alloys, BTW.)

Why? Well I was going to get the Azenis in 205/50-15 but they weren't in stock (and weren't going arrive in time) so I noticed that TireRack had a killer deal on the 195/50-15 S-03PP ($78/each--compared to the same tire in 205/50-15 for over $120/each!!!) so I went that route.

That said, Pleiades is running 225/50-15 Victoracers on his car (Legacy GT running the exact same 15x6 wheels I am running). The sidewalls are pretty diagonal though... :lol:

Next year I will either move to 225/50-15 on 15x7s, 205/50-15 on 15x6s or possibly move back up to 16s for autocross.
 

·
Registered
Joined
·
150 Posts
Discussion Starter #5
I will still be using the 15" steel wheels with my hoosers i guess i should get the 205/50-15 becouse that sounds like the best aproch with the lower horse power motors.

thanks guys..
 

·
Premium Member
overdeveloped beater
Joined
·
8,335 Posts
ESPECIALLY since you're using steel wheels, you should go with the 205's! That is, unless your local events have very wide open courses. You can find NEON wheels that may be lighter than the OEM Subaru wheels and still be real cheap. Or early 90's Legacy wheels....cheap when you find them.

Warp3....stick with the 15's. They launch *much* harder and multiply acceleration and braking torque! The only downside I can see is the rev limiter creeping up that much sooner.
 

·
Registered
Joined
·
410 Posts
Storm said:
Warp3....stick with the 15's. They launch *much* harder and multiply acceleration and braking torque! The only downside I can see is the rev limiter creeping up that much sooner.
I know they definitely accelerate better. Since most of our courses are very tight but not tight enough for a 1st gear downshift in a 2.5RS (even with stock size tires), it tends to give me a pretty decent advantage. I can launch, shift near redline, into 2nd gear and stay there. :D

However, it is a disadvantage on a course just big enough to need a 3rd gear upshift with the smaller wheels (that wouldn't be needed with the taller ones). I think that is one of the things that hurt me at the ProSolo. The launch was great but it was a much higher speed course requiring me to accelerate halfway through 3rd gear! (That and my car was really setup for low speed courses so my handling was a bit tail-happy... :lol: )

If I go to DSP or SM next year, I'm thinking about 225/50-15 (or possibly 225/45-15) R-compounds on 15x7 Kosei K1s (13.5 lbs / +45 offset / very inexpensive). :D
 

·
Registered
Joined
·
150 Posts
Discussion Starter #8 (Edited)
Ok i'm going to use my steel wheels but now the question is tires.

I was going to use the Hoosier A3S03's but they are way too much money at $170 so i'm trying to deside between the Kumho v700 victoracer and the kumho Ecsta v700 does anyone have any experance with eather tire that can tell me witch way or the other.

thanks

Erik Schmidt

:edit:
If I go to DSP or SM next year, I'm thinking about 225/50-15 (or possibly 225/45-15) R-compounds on 15x7 Kosei
Where can i find info about these wheels?;)
 

·
Premium Member
overdeveloped beater
Joined
·
8,335 Posts
OH LORD! We just switched from the Hoosiers to Kumho ECSTA V700. Lemme tell ya now.....if you have driven the Hoosiers, you'll hate the Kumhos until you get used to them. We're on our 3rd full event with the Kumhos now and we're 'just now' getting used to them.

The grip IS there with them, they just feel more mushy than the xtra crispy Hoosier response. Our times are still good too. For the money, go with the Kumhos. If you're running on concrete...for serious contention...go with the Hoosiers. Actually, I would just scratch the Hoosiers altogether unless you're really looking for that last little bit of an edge.

I have a thread going on the SCCAforums.com site in the technical section. I'm too tired to go grab the link though...:rolleyes:
 

·
Registered
Joined
·
150 Posts
Discussion Starter #10
I have driven the hoosiers once and they were worn (but not worn out) track racing ones and they were great compared to my yoko's all seasons but it was on my friends stiff neon.

So you think the V700 Victoracers over anything else out there?
 

·
Premium Member
overdeveloped beater
Joined
·
8,335 Posts
Yeah, I'd have to give the Kumhos the nod for "bang for buck" ratio. I've run Comp T/A R-1, G-Force, Toyo Proxes R-1, Hoosiers, and now the EcstaV700. My money has to go to Kumho....

Flooredsubaru said:
I have driven the hoosiers once and they were worn (but not worn out) track racing ones and they were great compared to my yoko's all seasons but it was on my friends stiff neon.

So you think the V700 Victoracers over anything else out there?
 

·
Registered
Joined
·
150 Posts
Discussion Starter #12
I e-mailed the guys at tire rack and they said to use the ecsta V700 over the V700 vitoracers is that what everyone else is seeing?

:nuetron:
 

·
Registered
subbie
Joined
·
328 Posts
my first auto-x i ran on stock rim and tire, bad choice, it sucked, ran a friends rs with good tires on it, what a difference:eek: , i don't know the size, but they were on the stock 16s, big difference though
 

·
Registered
MY00 Subaru Impreza 2.5RS BRP
Joined
·
2,605 Posts
just some cut/paste from i-club.com

205/55 R16 for the WRX.
this means a diameter of 24.89in.

Other sizes that are close to this diameter are:
225/50R16 (24.86in)
215/45R17 (24.61in)
225/45R17 (24.97in)
245/40R17 (24.72in)
225/40R18 (25.09in)
245/35R18 (24.75in)

Wide/Asp. Whl Diameter

205 / 55 R 16 24.87795276
215 / 50 R 16 24.46456693
225 / 50 R 16 24.85826772
215 / 40 R 17 23.77165354
215 / 45 R 17 24.61811024
225 / 35 R 17 23.2007874
225 / 40 R 17 24.08661417
225 / 45 R 17 24.97244094
235 / 40 R 17 24.4015748
235 / 45 R 17 25.32677165
245 / 35 R 17 23.7519685
245 / 40 R 17 24.71653543
205 / 35 R 18 23.6496063
225 / 35 R 18 24.2007874
225 / 40 R 18 25.08661417
235 / 35 R 18 24.47637795
235 / 40 R 18 25.4015748
245 / 35 R 18 24.7519685
245 / 40 R 18 25.71653543

the Aspect ratio is the percentage of the width... so
a 200/50 will have a sidewall height of 100mm. So to
calculate final diameter, you take the aspect*0.01(to
make it percent)*width/25.4(mm to in conversion)*2(two
sidewalls in total diameter)+wheel size

so a 200/50R15 works out to:
15"+200mm*50mm*.01*2/25.4 = 22.87in.
 

·
Premium Member
overdeveloped beater
Joined
·
8,335 Posts
In theory anyway......

Not every brand of tire has the exact same dimensions for a given size.
 

·
Registered
Joined
·
150 Posts
Discussion Starter #17
Well the Kumho Ecstas V700 205/50-15 are on there way to my door.

Yeah!!! :biggest:

We will have a test on them on the 27th so i will make sure to tell you all.
 

·
Registered
Joined
·
3,614 Posts
Storm said:
In theory anyway......

Not every brand of tire has the exact same dimensions for a given size.
so true. actually, in my parent's garage sit my BFG G-Force R1s on the stock 16x7 wheels for auto-x in 205/55 16. right next to them are my Kumho R700 rally tires on 15x7 Racelines in size 205/65 15. with all 4 stacked up against each other, the Kumhos are a good inch taller at least and that's not counting the ribs in the sidewall :lol:

on topic though, i've been happy with the R1s (its my second set of used ones). unfortunatly, you can only buy them used now since they were discontinued last year. next season i do plan on getting the kumhos 205/50 16.
 
1 - 18 of 18 Posts
Top