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Old 07-01-2004, 05:58 PM   #1
Scooby Newbie
Member#: 56152
Join Date: Feb 2004
Chapter/Region: NWIC
Location: San Francisco, CA
Subaru Stars Calling 2.5rs owners! Autox tire help needed

I am trying to find out if 215/45-16 Falken Azenis sports will work well on my stock 2001 2.5rs wheels and if thats even the best size for autox. Tires.com tried to warn me about reducing the sidewall size that much (stock is 205/55-16) but I dunno. The azenis' do come in a 205/55-16 size but that doesn't sound to appealling to me seeing as they are no wider and the sidewall is huge and will more easily roll during autox. Thanks for all your help guys.
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Old 07-01-2004, 06:59 PM   #2
Scooby Specialist
Member#: 6178
Join Date: Apr 2001
Chapter/Region: MAIC
Location: Singletracks
98 GM67 + 03 SG6
2 whls > 4 whls


Do not limit your search to Falken. The BFGoodrich g-force KD's have served me very well in both auto-x and track days.

A great tire, lots of grip in the dry, not so well in the wet, but oh well. And, you can pick them up in 225-50-16, which will give you plenty of contact between the rubber and the road.

As for the Falken's, I'm not sure if dropping to a 45 series tire would do anything drastic. I'm sure it would work and fit fine (as I have 225's on my stockers for auto-x/track), but I haven't tried it.

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Old 07-02-2004, 04:24 AM   #3
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Member#: 22462
Join Date: Aug 2002
Chapter/Region: SWIC
Location: Phoenix , Az
2001 AutoFozzyFTW


It looks like you did your homework as far as cost and grip goes ..
I think you need to ask yourself a couple of ?'s
1 are these tires going to be your daily tires also ? You understand you will lose major gas mileage .
2 If these will be strictly autox tires are the courses usualy on the short side ? If so your selection is perfect the smaller rollout wil help launch your car out of the corners . If local courses tend to be long IE 3rd gear or higer you may want to consider stock size tires .

Just my .02
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Old 07-02-2004, 05:14 AM   #4
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Join Date: Dec 2002
Location: kansas city ks
2001 RS-T Hybrid


I've got these on my rs and they are great 215/45/16. I probably won't buy another brand of performance tire ever again unless it's a slick. Best bang for the buck in my opinion. I've had g-force tires they were ok but were more expensive less grippy and the wear was horrible feaking loud too. I tired two different yokohmaha's and was pretty satisfied with both I liked the es1000's best . They lasted a lot longer were good in the wet and were still pretty cheap. You might want to look into kuhmo as well.
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Old 07-02-2004, 10:37 AM   #5
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Member#: 56152
Join Date: Feb 2004
Chapter/Region: NWIC
Location: San Francisco, CA

These are going to be my autox tires only. For summer I am going to have to buy Kumho supra's (w/ new wheels hopefully) for next year. As far as other tires go, I'm not really interested, i'm pretty much under the immpression that if you want to go autoxing you buy azenis. This is what everyone (including a skip barber instructor @rev it up) has told me and also the set up my brother's friend had when he went autoxing. SO the azenis's are on order, I can't wait till they get here. Thanks so much guys! Can't wait for autox!
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Old 07-02-2004, 10:39 AM   #6
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Member#: 56152
Join Date: Feb 2004
Chapter/Region: NWIC
Location: San Francisco, CA

and the autox courses are usually short and tight; even in my rs I doubt I would ever need 3rd.
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Old 07-02-2004, 11:08 AM   #7
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Member#: 1951
Join Date: Jul 2000
Chapter/Region: NESIC
Location: NH, CT, hotels...
08 M3


I've been using 205/55 in the past, but was tempted to try 215/45 myself. Generally, people say the 215/45 offers better turn in response, and acceleration out of the tight spots.

One concern I had, though, was banging against the rev limiter. In places like Ft. Devens (in Mass), I would often hit the limiter during a run (on the 205/55s). The RS has a pretty low redline, and the 215/45's have a slightly smaller diameter. Thus, for a given speed, the engine is revving higher, and I would end up on the limiter longer unless I shifted.

My thoughts were to try 215/45, to see what difference they really made, and be ready to shift a bit. On tighter courses (like NHIS or other parking lot events), this might not be a problem.

Part of the fun is in trying things out!

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Old 07-02-2004, 11:46 AM   #8
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Member#: 2883
Join Date: Nov 2000
Location: Burlington, VT
2004 STi


The biggest thing to consider on the 205 vs. 215 Falkens is the gearing. Plenty of courses see the 2.5RS at the top of 2nd gear already with stock sized tires. You'll be up against the limiter even sooner with the shorter 215/45 tires.

At ProSolos, where you want quicker acceleration off the line, and some of the courses have you in 3rd gear already, it might be a good choice.

Chris H.
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Old 07-02-2004, 10:31 PM   #9
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Member#: 61860
Join Date: May 2004
Chapter/Region: MWSOC
Location: Mid-Mo
2004 WRX STi
Aspen White


You might consider the Kumho MX 225/50R16 as well grip like the BF Goodrichs, but cost alot less.
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