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Old 04-22-2010, 10:14 AM   #1
tittykaka7
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Default Street / Track tire size for WRX on 16" rims?

Hi all, I'm back with more noob questions. I was about to click buy it now on some 205/55/16 dunlop direzza z1 tires on ebay, when a friend said I should check on here for what size guys are running on the tracks. And I can't find much by searching! I'm looking for info on what size works best on a stock '04 WRX with the stock 16" rims, without any rubbing or need to 'roll' my fenders or hammer them in with a sledge. I want this to be a street / track setup that is plug and play.

What sizes are you guys running on a nearly stock setup that doesn't rub?
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Old 04-22-2010, 10:19 AM   #2
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What year WRX do you have? the restricting issue will be your wheel width.

I run 245x40x17 on my 02 and had to roll the fenders a bit

I can get away with a 235x40x17 without rolling at all
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Old 04-22-2010, 10:42 AM   #3
tittykaka7
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Its a 2004 with stock wheels and stock brakes. Running EBC Yellowstuff, ATE Super blue fluid, stage2 cobb tune + tbe, Koni strut inserts + sti springs. Whiteline 24mm swaybars f & r, front at full stiff rear at mid stiffness.
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Old 04-22-2010, 10:45 AM   #4
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205/55/16 starspecs would be great on the stock wheels. your brakes are gonna hate you...
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Old 04-22-2010, 11:52 AM   #5
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Quote:
Originally Posted by nhat View Post
205/55/16 starspecs would be great on the stock wheels. your brakes are gonna hate you...
Yep. You might be able to go a bit wider, but its probably not worth it. I run 205/55/16 RE-01R's on the 16" GD WRX wheels I have and it is just fine for the track.
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Old 04-22-2010, 02:00 PM   #6
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205/55/16 starspecs would be great on the stock wheels. your brakes are gonna hate you...

This good advice. You need good fresh brake fluid, ATE is only $12.00 per can. And then you will find out how worthless your brakes are after 2 laps of any track. The thing you need is a good quality big brake set up. I have an 03 wrx and know it is the first thing you will want, if you want to spend any time at a race track. Forget tires and wheels til after your first time tracking your car. Look for used brakes from someone who upgraded for the best bang for your buck. If you get hooked on the track, then you will want 18" wheels for the best selection of tires and to fit over you new big brakes.
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Old 04-22-2010, 02:09 PM   #7
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Quote:
Originally Posted by newclutch View Post
205/55/16 starspecs would be great on the stock wheels. your brakes are gonna hate you...

This good advice. You need good fresh brake fluid, ATE is only $12.00 per can. And then you will find out how worthless your brakes are after 2 laps of any track. The thing you need is a good quality big brake set up. I have an 03 wrx and know it is the first thing you will want, if you want to spend any time at a race track. Forget tires and wheels til after your first time tracking your car. Look for used brakes from someone who upgraded for the best bang for your buck. If you get hooked on the track, then you will want 18" wheels for the best selection of tires and to fit over you new big brakes.

I would argue that you don't need a big brake setup. The costs that come with maintaining a BBK are much higher than a stock setup. Rotors are more expensive, brake pads are more expensive, and the initial investment is way too much for the casual user.

If anything, do the rear legacy GT brake upgrade to get better cooling in the rear (and bias), and purchase some ducting for the front rotors to keep air on them at all time.

On 205 street tires I don;t think your brakes will be working that hard to begin with
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Old 04-22-2010, 02:48 PM   #8
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you don't need a bbk for sure, just good fluid and appropriate pads.
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Old 04-22-2010, 03:39 PM   #9
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I've actually taken the car to the track on the completely stock setup, and noticed I had severe understeer issues and yes the brakes were highly insufficient. I realize the stock WRX brake system is too small, in fact I started a thread in this very forum about it and determined if I ever take the track more seriously I will need an upgrade, LGT brakes are most affordable.

To combat understeer I installed the whiteline 24mm sways. I have EBC Yellowstuff pads, ate super blue brake fluid, and will be rigging up some sort of air ducting to the rotors too. My plan is just to not push the brakes real hard every lap. Probably 1 hard lap, 1 easy lap, back and forth so as to give them time to cool off. Its just a casual lapping day so no need to get my brakes to 1000 degrees. . and especially not worth the investment in a BBK or Brembo setup.. costs WAY too much..

Anyway thanks for the advice guys, I'll be picking up some stock sized Dunflops real soon!
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Old 04-22-2010, 10:49 PM   #10
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why not 225 50 16?
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Old 04-23-2010, 04:13 AM   #11
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Quote:
Originally Posted by Craigs View Post
why not 225 50 16?
This is the way I would go as well. Given the minuscule price difference and the extra 20mm width I think these would be worth it based on the small amount of extra tire life you'd get.

Someone please explain why to go with the 205's vs. the 225's.
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Old 04-23-2010, 08:46 AM   #12
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Originally Posted by speedyHAM View Post
This is the way I would go as well. Given the minuscule price difference and the extra 20mm width I think these would be worth it based on the small amount of extra tire life you'd get.

Someone please explain why to go with the 205's vs. the 225's.
On a stock rim (what are they 7"? ) a 225 may be just a bit wide. Typically people forget that it's not always the width that counts, but how it fits and works with the wheel. A lot of frequent track goers will tell you that the proper tire-size-to-wheel-size combo will be better than the "fit whatever goes" method.
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Old 04-23-2010, 09:47 AM   #13
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Originally Posted by jc8587 View Post
On a stock rim (what are they 7"? ) a 225 may be just a bit wide. Typically people forget that it's not always the width that counts, but how it fits and works with the wheel. A lot of frequent track goers will tell you that the proper tire-size-to-wheel-size combo will be better than the "fit whatever goes" method.
your hi - this ain't 335's on a 6 inch steel wheel
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Old 04-23-2010, 10:06 AM   #14
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I can't say for cars because I'm new to racing cars but I can say the oversize tire idea doesn't work that well on bikes. Typically guys agree to keep the proper tire size that was meant for that rim to maintain the proper tire profile, sidewall support / flex etc.

And someone earlier had mentioned a 225 would rub on the fenders, if thats true I definitely don't want to mess with it. This is a street / track car, more emphasis on the street since its my DD. I'd just like to make it somewhat track competent for the weekends.
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Old 04-23-2010, 10:07 AM   #15
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Quote:
Originally Posted by Craigs View Post
your hi - this ain't 335's on a 6 inch steel wheel
If I were high, I would be , but I am not


I do know that 20mm of tire patch does make a difference though.
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Old 04-23-2010, 10:14 AM   #16
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Quote:
Originally Posted by tittykaka7 View Post
I can't say for cars because I'm new to racing cars but I can say the oversize tire idea doesn't work that well on bikes. Typically guys agree to keep the proper tire size that was meant for that rim to maintain the proper tire profile, sidewall support / flex etc.

And someone earlier had mentioned a 225 would rub on the fenders, if thats true I definitely don't want to mess with it. This is a street / track car, more emphasis on the street since its my DD. I'd just like to make it somewhat track competent for the weekends.
Who said 225's would rub?

Get the 225's and go to the track. Make another thread with pics and videos.

Really this one is this simple.
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Old 04-23-2010, 10:16 AM   #17
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Are the 16" WRX wheels not just 6.5" wide? 225s would be much better, but I am not sure how well the sidewalls would like the 6.5" wheel though....
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Old 04-23-2010, 01:12 PM   #18
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Are the 16" WRX wheels not just 6.5" wide? 225s would be much better, but I am not sure how well the sidewalls would like the 6.5" wheel though....
WRX rims do seem to be 6.5" wide. I see on ebay the 205 set will cost about 450, the 225 set will be 495. I think I might try the 225's unless anyone has a reason not to?
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Old 04-23-2010, 01:18 PM   #19
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I ran 225's on the 6.5" wheel for autox back in the day. Worked fine and I'd do that over a 205. A little sloppy, but that can be offset with higher pressures.

Last edited by tuskenraider; 04-23-2010 at 06:01 PM.
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Old 04-23-2010, 01:45 PM   #20
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225/50-16 on stock 16x6.5 wheels

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Old 04-23-2010, 02:10 PM   #21
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225 will fit fine without any rubbing. But when you corner hard and roll them over they will have a bigger contact patch than 205s. They will feel slightly sloppier due to sidewall flex. If 205s are cheaper then they are a better selection. I run 225s on my car but I am 18" x 8" wheels. NO RUBBING or issues.
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Old 04-23-2010, 02:30 PM   #22
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225 is a very popular size, but starspecs do run wide so it's probably more of a 215 which would be perfect.
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Old 04-23-2010, 02:35 PM   #23
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Quote:
Originally Posted by newclutch View Post
225 will fit fine without any rubbing. But when you corner hard and roll them over they will have a bigger contact patch than 205s. They will feel slightly sloppier due to sidewall flex. If 205s are cheaper then they are a better selection. I run 225s on my car but I am 18" x 8" wheels. NO RUBBING or issues.
Quote:
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225 is a very popular size, but starspecs do run wide so it's probably more of a 215 which would be perfect.
You guys are morons.
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Old 04-23-2010, 02:42 PM   #24
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You guys are morons.
how so? is it cause of my member number? i'm sure i know just as much, if not more, about GD/GG wheel/tire fitment as you do

if he's set on the 205 starspecs, they're more like a 215 anyways. he doesn't have to stuff 225s on a 16x6.5.
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Old 04-23-2010, 02:46 PM   #25
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how so? is it cause of my member number? i'm sure i know just as much, if not more, about GD/GG wheel/tire fitment as you do

if he's set on the 205 starspecs, they're more like a 215 anyways. he doesn't have to stuff 225s on a 16x6.5.
Your advice is stupid because a 225 is not stuffed on a 6.5 wheel. The 225 will be faster and more driveable. It has nothing to do with member number - i've met some idiots with a low member number too.
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