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Old 03-08-2013, 01:20 PM   #1
La Flama Blanca
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Default Winter tires for protune

Hey guys,

I am getting my 04 stage 2 wrx protuned this weekend. I was wondering if winter tires will cause any loss in power or not.
Also, would you recommend taking out my subs in the trunk? I'm gunna have them in my car all the time anyways, so it wouldn't really make a difference, correct?
Thanks!!!
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Old 03-08-2013, 01:31 PM   #2
Loyale93
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Are you getting road tuned or dyno tuned?

Mediocre, shot in the dark answer:
Leaving your subs in the car will not affect performance of the engine, unless they're drawing massive wattage. It will not affect a dyno readout.
Winter tires may cause slight loss in traction on the dyno, but I can't imagine it making that much of a difference, since you're strapped in. But if you're going through the trouble of a dyno tune, why not just bring the summer set anyway.

Better answer:
Ask your tuner... That's what you're paying him/her for.
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Old 03-08-2013, 01:48 PM   #3
La Flama Blanca
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The tune is gunna be done on a dyno. It's just a hassle for me to change out the summers ten out back on the winters. Once those summers are on, I would cry taking them off again, lol.
I can't see it making too much of a difference. Maybe the numbers will show a bit lower, but really won't be because the car is still putting out the same amount of power with both the winters and summers
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Old 03-08-2013, 02:01 PM   #4
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Quote:
Originally Posted by La Flama Blanca View Post
The tune is gunna be done on a dyno. It's just a hassle for me to change out the summers ten out back on the winters. Once those summers are on, I would cry taking them off again, lol.
I can't see it making too much of a difference. Maybe the numbers will show a bit lower, but really won't be because the car is still putting out the same amount of power with both the winters and summers
Depends on the tire... My Toyo Garit KX lost 20whp on the dyno, and got progressively worse the warmer they got. It lost a total of 40whp compared to summers. Pulled the car off the dyno and it didn't feel like it lost 40whp.

Side note... I have read that blizzaks lost around 20-25whp in other threads, so I am going out on a limb to say the results will vary.
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Old 03-08-2013, 02:05 PM   #5
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Old 03-08-2013, 02:08 PM   #6
La Flama Blanca
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I am using blizzaks. I am confused though. So the dyno reads a lower hp...but your actually not losing any? It's just reading less?
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Old 03-08-2013, 02:43 PM   #7
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Tires should have zero bearing on power on a dyno UNLESS they are much heavier than your summer set. That's the only thing that should make a difference. Traction really shouldn't be an issue unless you are making some crazy power, like well over 500whp (no idea, just guessing). Basically, if you are going to lose traction anyway, it would be an issue. I've been tuned to 400whp on blizzaks with no issues. Don't worry about it.
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Old 03-08-2013, 02:46 PM   #8
La Flama Blanca
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I am planning on doing a "safe agressive" tune, as I dont wanna put too much stress on my car. Catless, stage 2 with a short ram is what I got. I'm not gunna be gettin anywhere near 400whp LOL...it would be nice tho
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Old 03-08-2013, 02:57 PM   #9
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Don't have much to add other than what's already been said, but I do wanna say your screen name is awesome. Kenny Powers. You're F'n out, I'm F'n in.
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Old 03-08-2013, 05:19 PM   #10
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you'll be fine. i dynotuned on my winterforces on. i wonder if it'll be any different with my summer tires and rims.
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Old 03-08-2013, 05:49 PM   #11
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Quote:
Originally Posted by La Flama Blanca View Post
I am using blizzaks. I am confused though. So the dyno reads a lower hp...but your actually not losing any? It's just reading less?
Imagine this, your car makes 1000000000 horse power at the crank. Also assume that you have a perfect drivetrain with no loss. The tires are going to slip when you throttle up. So on the road, while you may have 10000000000 whp, it won't feel like that. same thing he's explaining on the dyno. The tires were probably slipping a little, or had give or whatever. But the engine is still getting tuned properly.

Bottom line, you're going to a shop to get it dyno tuned. Why not have them pop the summers on for you while you're there. It'd take 5 minutes on a lift. If they're a halfway decent shop, they will do this for you for little to no charge.

Real bottom line. CALL YOUR TUNER AND STOP ASKING US!!
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Old 03-08-2013, 05:52 PM   #12
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:facepalm:
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Old 03-08-2013, 05:55 PM   #13
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Quote:
Originally Posted by La Flama Blanca View Post
I am planning on doing a "safe agressive" tune, as I dont wanna put too much stress on my car. Catless, stage 2 with a short ram is what I got. I'm not gunna be gettin anywhere near 400whp LOL...it would be nice tho
What the **** is a "safe aggressive" tune?

I want to be hellaflush without rolling my fenders or using low offset.
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Old 03-08-2013, 05:57 PM   #14
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Not many people had a problem saying anything dude. If you didn't like the thread then why did you bother saying anything? Pssshhhh
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Old 03-08-2013, 05:58 PM   #15
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Quote:
Originally Posted by La Flama Blanca View Post
Not many people had a problem saying anything dude. If you didn't like the thread then why did you bother saying anything? Pssshhhh
U wot mate?
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Old 03-08-2013, 05:59 PM   #16
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What the **** is a "safe aggressive" tune?

Thats like saying you slept with a skinny fat chick.
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Old 03-08-2013, 06:04 PM   #17
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I would have bet money there was no measurable effect but these guys have dyno plots that say otherwise

http://www.airboytuning.com/archives/82
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Old 03-08-2013, 06:06 PM   #18
La Flama Blanca
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No beef, just thought I'd ask around or some opinions, that's all.
And in regards to a safe agressive tune. I don't want it too conservative, but not too agressive, as I haven't upgraded injectors, turbo, fuel pump etc
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Old 03-08-2013, 06:18 PM   #19
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Quote:
Originally Posted by vision.dynamix View Post
What the **** is a "safe aggressive" tune?

Thats like saying you slept with a skinny fat chick.
Dude, I slept with a skinny fat chick once. She was extremely good bad in bed. 9 months later though, I found out the hard way that she was pregnant barren.

But I ended up calling her pimp and he explained everything to me and then it was all good.

OP, have you called your tuner yet?
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Old 03-08-2013, 06:37 PM   #20
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Quote:
Originally Posted by La Flama Blanca View Post
No beef, just thought I'd ask around or some opinions, that's all.
And in regards to a safe agressive tune. I don't want it too conservative, but not too agressive, as I haven't upgraded injectors, turbo, fuel pump etc
thats something you have to ask your tuner. he'll tell you what he set you at. so get that tune
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Old 03-08-2013, 06:51 PM   #21
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The winter tires are going to be soft at the temperature inside the facility, and could cause extra friction. Maybe you can over inflate them or something.

Also, which dyno. I can't recall the brand that bolts to the hubs, this eliminating tires and wheels from the tuning process.

Has anyone said you should ask your tuner?
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Old 03-08-2013, 08:19 PM   #22
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Holy over thinking every detail batman. Don't forget to ask your tuner to eat a light lunch and only take in a netbook, don't want too much extra weight.
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Old 03-08-2013, 11:10 PM   #23
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Quote:
Originally Posted by HinshawWRX View Post
Holy over thinking every detail batman. Don't forget to ask your tuner to eat a light lunch and only take in a netbook, don't want too much extra weight.
"What? your winter tires? nah they won't matter much"
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Old 03-09-2013, 12:30 AM   #24
La Flama Blanca
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Ahhhh some of your Americans are such ****ing smart a** arrogant d bags. Just asking a question, lol, guess we are a lot nicer here I Canada.

Yes I finally got a hold of my tuner. He said its perfectly fine and has tuned with winters on plenty of times. No problems/power loss what so ever. He uses a dynojet.

And for the people that actually made decent comments, thanks for being good members and expressing meaningful opinions
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Old 03-09-2013, 10:57 AM   #25
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Who cares if the dyno reads differently, because of the tires, as long as the tune is good. Unless you just want dyno numbers.

So you are considering driving to the tuner, on snow tires, then switching to summer tires to tune, then back to winter tires to drive around until its warm enough to switch back to summer tires?

see where I'm going with this...

Then again, are they studded winter tires?
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