[idrivearocket]

So you would fair a guess to say the 070's are the fastest tire of the bunch, unless you get up and over the 3-4 lap range?

On the other hand, I have a hard time imagining any street tire will really perform well over the 3-4 lap range. I only say this because from my motorycle racing experience, any performing street tire is great for about 1 lap max... and then you are sliding all over the place. (never confidence inspiring on 2 wheels) R-comps get nice and sticky after the 1 lap range peaking a few laps thereafter and holding steady for 10-20 laps. Thankfully with tire warmers you can pretty much give'er right off the hop.

[idrivearocket]

I wonder why they reinforced the 070's with such stiff side walls, if the grip levels are worse than some other tires when cool yet drop off once hot. Are they really targeting this tire for a 60 second autocross sprint? Perhpaps...

[thunderbird]

Its hard to beat a car with RE070s. But at nationals in STU, the winners use Neova advans.

[Swine]

Originally Posted by idrivearocket

So you would fair a guess to say the 070's are the fastest tire of the bunch, unless you get up and over the 3-4 lap range?

On the other hand, I have a hard time imagining any street tire will really perform well over the 3-4 lap range. I only say this because from my motorycle racing experience, any performing street tire is great for about 1 lap max... and then you are sliding all over the place. (never confidence inspiring on 2 wheels) R-comps get nice and sticky after the 1 lap range peaking a few laps thereafter and holding steady for 10-20 laps. Thankfully with tire warmers you can pretty much give'er right off the hop.

If they are the same size, sure. I would say RE070 is the fastest in the dry in good operating temps yet least consistent with heat...i think that sums it up.

As far as street tires dealing with heat, well...none of them get the ooey-goey r-comp feel with heat. But some tires do deal with the heat better then others. A kumho mx for example, does not offer the most outright grip and has a pretty soft sidewall...but characteristics of the tire hardly changes even after numerous laps. You can stay out on the track all day and if the car holds up, you will turn pretty consistent track times.


Both the Neova and 01r take heat better then the 070, but i have not driven my neova's and the 070's back to back, so its hard to say how much better.

[roydriessens]

My Appologies if this is a bit of topic, but where would one put the RE05-R compared to the 070 and the 01 ?

[Mykl]

It's been a while since I've been on fresh RE070's. But fresh RE-01R's are absolutely insane.

I haven't had the 01R's to the track yet though, but I can't imagine that they'd not be able to handle the heat.

[october]

070 are the only tire that's been on my car for 40000 miles/ they are expensive!
Replacement is upon me
I only DD
I drive aggressively
Long high speed turns from freeway to freeway
and aggressive lane changes
I love the lateral movement ( as in lane changes )
of this car- which I assume ( even though never racing ) is partly the stock
tires

I am fearful I will lose something of the lateral agility
if I switch to a tire with a softer sidewall
any recommendations
( 615 01r bridgestone or stock
)
are appreciated
when i say I love my cars handling in DD, I assume I am speaking of these tires too
the car is stock

Thanks

[SLY STi]

Originally Posted by idrivearocket

So there seems to be many people who say the RE01R is stickier than the RE070...

I have not tried both, but I'm wondering if the RE01R is sticker at colder temps (street driving) but the RE070 handles heat better and generates a faster lap time once the tires are warmed up on the track over 2-3 laps.

Can anyone comment on lap times, who has experience with both?

RE01R = best performance street tire available. As far as colder temps go, the rubber gets fairly stiff, and traction becomes hard to come by. Though I was fairly impressed with their holding ability around 40 degrees Fahrenheit. Anything under freezing and grip starts to suffer immensely.

Another thing to note. Tread wear is quite low, which means you will not get much life out of these tires. Especially if you plan on regularly racing on them.

[mckman]

RE070's are awesome tires.

The 255/40ZR17 are available at TireRack. However, they seem to be constructed differently then the 255 version for the s2000.

From Bridgestone:

Size | Measuring Wheel | Section Width | Tread Width
225 | 7.5 | 8.9 | 8.7
255 | 9.0 | 9.8 | 9.1

The 225 tires have a very large tread width relative to the section width, which implies a different shoulder design. If you adjust for the rim sizes and use an 8 inch measuring wheel with the 225s and an 8.5 wheel for the 255s (17x9's are much less common then 17x8.5). The advantage of the 255 tire is not as large as it might seem.

225 | 8.0 | 9.1 | 8.7
255 | 8.5 | 9.6 | 9.1

Looks like about a half inch larger section width and a bit less of tread width. The 225 RE070's are a special tire. Not sure if it is worth it for most people to upgrade (of course IWSTI members are not most people). On an autox course where every fraction of a second counts, maybe, but for everyone else, probably not. The 215 RE070's show even more clearly how unusual the 225 is.

215| 7.0 | 8.3 | 7.4

The differences are huge compared to the 225. Adjusted for an 8 inch wheel it looks closer, but the tread width is still really small.

215| 8.0 | 8.7 | 7.4


From Tire Rack:

Section Width
A tire's section width (also called "cross section width") is the measurement of the tire's width from its inner sidewall to its outer sidewall (excluding any protective ribs, decorations or raised letters) at the widest point. This measurement is made without any load placed upon the tire and after the tire has been properly mounted on its industry assigned measuring rim and has been inflated and reset to its test pressure after 24 hours.
Because a tire's section width is influenced by the width of the rim upon which the tire is mounted, the correct industry assigned measuring rim width for the tire size being measured must be used.



Tread Width
The tread width is the distance between the outer edge and the inner edge of the tread of a new tire. However today's radial tires often feature tread designs that incorporate rounded shoulders and there is no industry standard pertaining to "how much" of the rounded shoulders should be included in the tread width measurement. Because of this, it is difficult to accurately compare the tread width differences of one tire brand to another. Tread width measurements are best used when comparing the various tire sizes or lines manufactured by a single tire manufacturer. Several tire manufacturers have chosen not to publish tread width dimensions.

[turboranger]

^interesting

[jermdeez]

I personally thought the re01r was terrible cold, almost dangerously so. Personally I liked the feel of my pilot sport ps2, they are light and rip in the dry and wet, liked them much better than re01r, all around............still feel like re70 has a dry advantage over the ps2, especially on braking

[laueddy]

I was going to bring up the PS2 tires for comparison, cuz my RE070 is about to run out, and I was told the PS2 should have RE070's dry grip + better wet, except I'll loss some stiffness.

What's other people's opinions?

Originally Posted by jermdeez

I personally thought the re01r was terrible cold, almost dangerously so. Personally I liked the feel of my pilot sport ps2, they are light and rip in the dry and wet, liked them much better than re01r, all around............still feel like re70 has a dry advantage over the ps2, especially on braking

[SLY STi]

Originally Posted by jermdeez

I personally thought the re01r was terrible cold, almost dangerously so. Personally I liked the feel of my pilot sport ps2, they are light and rip in the dry and wet, liked them much better than re01r, all around............still feel like re70 has a dry advantage over the ps2, especially on braking

The RE01R is not meant to be driven in sub zero conditions. I happened to have driven in those conditions and merely stated my observations.

[Swine]

PS2 is def a hell of a tire...it will not have the out right dry times of the 070, 01r, or neova...but it wont be far off the pace.