For the tire nerds (star specs vs R compounds) - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 20 (permalink) Old 07-01-2011, 09:59 AM Thread Starter
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For the tire nerds (star specs vs R compounds)

How close is the Dunlop Direzza Sport Z1 Star Spec vs the R compound tires as far as cornering grip? Right now I can get the dunlops for 89 each PLUS an 80 rebate if I buy four. Hoosier a6's are 220ish each making them hella expensive to me. I know that the HS nuts run hoosier a6's but they my mazda2 weighs in at 2350 lbs, could the star specs compounded with less 700lbs less weight compete in the turns to the HS mazda3 big boys with a6's? Im trying to budget this out and do this cheaply, but if star specs arent going to yield me a second or two compared to oem tires, I guess I can put it on hold and save for R compounds.

Advice please.

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post #2 of 20 (permalink) Old 07-01-2011, 03:17 PM
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Re: For the tire nerds (star specs vs R compounds)

In a word no, Star Specs (or any other street tire for that matter) can't compete with good r-comps. If you're racing against a field of competitors on race tires and you're on street tires it's like taking a knife to a gun fight. When I drive a car with street tires now, it feels like it has no grip. There are other alternatives to A6's btw. Look into the Hankook Z214 C71 compound tires. In my size they are $280 less than a set of A6's and they are very very good tires. I used A6's last year and I don't think they are any better than the Hankooks and the results I've had locally and nationally back that up. If Hankook offered Solo contingency I think we'd find a lot more people using the Hankooks nationally.
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post #3 of 20 (permalink) Old 07-01-2011, 06:09 PM
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Re: For the tire nerds (star specs vs R compounds)

You ran Hankooks in Nationals? I thought you ran Hoosiers so how do you "back it up"?

I have both A6 and *specs. The A6 for sure wins in any category but withstanding heat. The *specs are a great street tire for my setup, I was happy with them but the grip level was nearly half off at least.


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post #4 of 20 (permalink) Old 07-01-2011, 06:18 PM
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Re: For the tire nerds (star specs vs R compounds)

[quote author=tigermack link=topic=192909.msg4062534#msg4062534 date=1309558162]
You ran Hankooks in Nationals? I thought you ran Hoosiers so how do you "back it up"?

I have both A6 and *specs. The A6 for sure wins in any category but withstanding heat. The *specs are a great street tire for my setup, I was happy with them but the grip level was nearly half off at least.

[/quote]

"Nationally" doesn't necessarily mean at the national championships in Lincoln (However I am attending this year.) I am referring to both the Pro-Solo and national tour event I attended down in Blytheville this year that I trophied at each time. Practically everybody else was on Hoosiers and well prepped....I'm on a bone stock Mazda3 with Hankooks.
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post #5 of 20 (permalink) Old 07-01-2011, 06:33 PM Thread Starter
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Re: For the tire nerds (star specs vs R compounds)

Dumb question, but would hoosiers in the front and star specs in back be better than star specs all around.

If I have to go hoosiers, might as well go all out for HS and get the front sway bar, catback, filter and then ill be maxed out (but there is an add on chip that gets 16 whp from a 100hp car thats significant...and prolly illegal for HS).

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post #6 of 20 (permalink) Old 07-01-2011, 06:37 PM
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Re: For the tire nerds (star specs vs R compounds)

[quote author=fam link=topic=192909.msg4062543#msg4062543 date=1309559594]
Dumb question, but would hoosiers in the front and star specs in back be better than star specs all around.

If I have to go hoosiers, might as well go all out for HS and get the front sway bar, catback, filter and then ill be maxed out (but there is an add on chip that gets 16 whp from a 100hp car thats significant...and prolly illegal for HS).
[/quote]

It will be worse than Star Specs all around because you'll probably spin 5 times each time you go on course. So apparently my post was invisible.....you're not even going to consider the Hankooks? For somebody on a budget (which it sounds like you are) the Hankooks are the better option without a doubt. And yes any computer alterations are illegal in stock class.
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post #7 of 20 (permalink) Old 07-01-2011, 06:41 PM Thread Starter
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Re: For the tire nerds (star specs vs R compounds)

Nope not invisible just taking it all in although I did recently have a set of hankooks with a crazy aggressive tread pattern start prematurely cracking and looking old within a year and a half although it didnt effect tread life or performance)

Pricing for the hankook 15" below. Stock tire size is 185/55-15 which obviously they dont have, Ill be buying some rims for it (cheap 4x100 15" same as mini and miatas so which size should I get below?

205/50ZR15 $149.00 (ea.)
205/50ZR15 $153.00 (ea.)
225/45ZR15 $170.00 (ea.)
225/45ZR15 $155.00 (ea.)

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post #8 of 20 (permalink) Old 07-01-2011, 06:46 PM
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Re: For the tire nerds (star specs vs R compounds)

[quote author=fam link=topic=192909.msg4062553#msg4062553 date=1309560078]
Nope not invisible just taking it all in although I did recently have a set of hankooks with a crazy aggressive tread pattern start prematurely cracking and looking old within a year and a half although it didnt effect tread life or performance)

Pricing for the hankook 15" below. Stock tire size is 185/55-15 which obviously they dont have, Ill be buying some rims for it (cheap 4x100 15" same as mini and miatas so which size should I get below?

205/50ZR15 $149.00 (ea.)
205/50ZR15 $153.00 (ea.)
225/45ZR15 $170.00 (ea.)
225/45ZR15 $155.00 (ea.)
[/quote]

Make sure you get the C71 compound, not the C51. That is why there is duplicate sizes with different prices. How wide are the Mazda2 wheels? If they are 6" (and I believe they are) I'd go with 225/45/15 as long as they'll work without major rubbing issues. Check with your fellow Mazda 2'ers.
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post #9 of 20 (permalink) Old 07-01-2011, 06:47 PM Thread Starter
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Re: For the tire nerds (star specs vs R compounds)

thing is there are no mazda2'ers yet ;-)
Only one autox video on youtube and its bone stock and just one. The forums are scarce as far as the 2's go. Ill check around and see.

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post #10 of 20 (permalink) Old 07-03-2011, 05:55 PM
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Re: For the tire nerds (star specs vs R compounds)

I would run a 205 in the harder compound on the rear and the softer compound in the front.

205 or 225 in front? That's a tough one. Would you be able to heat a 225 up enough to maximize front grip? The Mini guys run both 205's and 225's.

Guess you get to be the Mazda2 guinea pig.

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