Ok with all the talk about the Z1's vs the RE-01R's.... *I hope this helps some*
Mar 12, 2008, 06:21 AM
#1
Ok with all the talk about the Z1's vs the RE-01R's.... *I hope this helps some*
I thought I'd post our test results on them. They were tested on or 3-series BMW test cars on the track and city streets last August. Test consisted of the Z1's, RE's, Yoko AD07, and BFG KD.
The overall rating was given to the B-Stone, but look at the individual test results. If you take a look at the results they are stronger for the B-Stone in the road testing *similar to what you would be doing day to day driving*, but the Z1 was better in the extreme condition track testing *similar to your local weekend auto-x conditions*. The results are so similar that any one of the two would be more than enough for either condition and certainly can handle anything you'll be doing on the street.
Where I see the Z1 being a tad better is for the weekend auto-x'er who drives their car with those tires on it every day but needs that tad extra for weekend racing. Otherwise, I would recommend using the B-Stone. Again, not to say the B-Stone isn't an awesome tire, but it seems with all the threads going on there's been difficulty in trying to find the line between that little extra each tire gives.
I commute 70 miles a day on the toll road with some curvy country roads here and there. I don't auto-x but do take my cars once or twice to Gingerman Raceway in Michigan. So, 95% of what I do is between 70-90mph (
) on the tool road with two days a year at the track. If I was looking for an extreme perf tire the B-Stone would be a great tire for me. If I lived a little closer to work and didn't might trading some more noise or stiffer ride for a bit better response during my twice a month weekend auto-x events then I'd do the Z1's.
I hope this helps. Its splitting hairs for 80% of the people buying them, but for that 20% that relies on that split hair for those extra tenths of a second in competition, I'd look to the Z1.
Since the oe EVO Yoko is specifically designed for the EVO and is really a one of one tire, we don't test it against our normal line-up. However, from what I've heard, these two tires do rank higher across the board than it.
Overall Test Results
Individual Test Results
The overall rating was given to the B-Stone, but look at the individual test results. If you take a look at the results they are stronger for the B-Stone in the road testing *similar to what you would be doing day to day driving*, but the Z1 was better in the extreme condition track testing *similar to your local weekend auto-x conditions*. The results are so similar that any one of the two would be more than enough for either condition and certainly can handle anything you'll be doing on the street.
Where I see the Z1 being a tad better is for the weekend auto-x'er who drives their car with those tires on it every day but needs that tad extra for weekend racing. Otherwise, I would recommend using the B-Stone. Again, not to say the B-Stone isn't an awesome tire, but it seems with all the threads going on there's been difficulty in trying to find the line between that little extra each tire gives.
I commute 70 miles a day on the toll road with some curvy country roads here and there. I don't auto-x but do take my cars once or twice to Gingerman Raceway in Michigan. So, 95% of what I do is between 70-90mph (
) on the tool road with two days a year at the track. If I was looking for an extreme perf tire the B-Stone would be a great tire for me. If I lived a little closer to work and didn't might trading some more noise or stiffer ride for a bit better response during my twice a month weekend auto-x events then I'd do the Z1's. I hope this helps. Its splitting hairs for 80% of the people buying them, but for that 20% that relies on that split hair for those extra tenths of a second in competition, I'd look to the Z1.
Since the oe EVO Yoko is specifically designed for the EVO and is really a one of one tire, we don't test it against our normal line-up. However, from what I've heard, these two tires do rank higher across the board than it.
Overall Test Results
Individual Test Results
Last edited by Neal@tirerack; Mar 12, 2008 at 06:54 AM.
Thanks for those results Neal! I'm a tire noob but this sure helps with my choice of tire that I would want to pick up.
Neal.
Mar 12, 2008, 06:35 AM
#4
What surprises me is that the KD scores so high on the dry tests. I'm assuming these are full-tread depth, brand-new tires.
From what I read, the AD-07's and RE-01R's reach their peak performance when they're shaved to around 3 or 4/32nds, then run through about 30 autocross runs. I'd love to see you guys run a test on these tires prepped that way.
From what I read, the AD-07's and RE-01R's reach their peak performance when they're shaved to around 3 or 4/32nds, then run through about 30 autocross runs. I'd love to see you guys run a test on these tires prepped that way.
Mar 12, 2008, 06:43 AM
#5
Evolved Member
iTrader: (56)
Join Date: Feb 2005
Location: vegas baby....
Posts: 3,070
Likes: 0
Received 0 Likes
on
0 Posts
i love these tests.... I wish the new hankooks were in on this test too though.
For us track guys its note worthy to say that the BFG's actually do very well on dry track in this test, if you skip comfort & wet stuff they would've been competitive in this test but it looks like the advans are still the tire to beat in dry performance.
Neil, do you know what the weight of the BMW test vehicle is? stock?
n
For us track guys its note worthy to say that the BFG's actually do very well on dry track in this test, if you skip comfort & wet stuff they would've been competitive in this test but it looks like the advans are still the tire to beat in dry performance.
Neil, do you know what the weight of the BMW test vehicle is? stock?
n
Trending Topics
Mar 12, 2008, 12:04 PM
#10
*Update*
Just got word that Dunlop is discontinuing the Z1 in the oe EVO sizes, and many others for that matter. They are replacing it with the Z1 Star and I'm not sure if we will be receiving any of the older version in stock. However, we do have an eta of late this month for the new version to arrive. This is what I've been told about the new version so far....
Dunlop has just announced there will be an enhanced version of the original Direzza Sport Z1, called Direzza Sport Z1 Star Spec.
The primary enhancement in the Star Spec version is the tread compound, which comes up to operating temperature faster than the original while retaining the same ultimate performance levels. The current information is only available in Japanese, but we'll share more details as they become available.
Mixing compatibility is unconfirmed at this time.
More details will follow.
Just got word that Dunlop is discontinuing the Z1 in the oe EVO sizes, and many others for that matter. They are replacing it with the Z1 Star and I'm not sure if we will be receiving any of the older version in stock. However, we do have an eta of late this month for the new version to arrive. This is what I've been told about the new version so far....
Dunlop has just announced there will be an enhanced version of the original Direzza Sport Z1, called Direzza Sport Z1 Star Spec.
The primary enhancement in the Star Spec version is the tread compound, which comes up to operating temperature faster than the original while retaining the same ultimate performance levels. The current information is only available in Japanese, but we'll share more details as they become available.
Mixing compatibility is unconfirmed at this time.
More details will follow.
Mar 12, 2008, 02:17 PM
#11
Evolved Member
iTrader: (4)
Join Date: Sep 2005
Location: on the edge of sanity
Posts: 794
Likes: 0
Received 0 Likes
on
0 Posts
*Update*
Just got word that Dunlop is discontinuing the Z1 in the oe EVO sizes, and many others for that matter. They are replacing it with the Z1 Star and I'm not sure if we will be receiving any of the older version in stock. However, we do have an eta of late this month for the new version to arrive. This is what I've been told about the new version so far....
Dunlop has just announced there will be an enhanced version of the original Direzza Sport Z1, called Direzza Sport Z1 Star Spec.
The primary enhancement in the Star Spec version is the tread compound, which comes up to operating temperature faster than the original while retaining the same ultimate performance levels. The current information is only available in Japanese, but we'll share more details as they become available.
Mixing compatibility is unconfirmed at this time.
More details will follow.
Just got word that Dunlop is discontinuing the Z1 in the oe EVO sizes, and many others for that matter. They are replacing it with the Z1 Star and I'm not sure if we will be receiving any of the older version in stock. However, we do have an eta of late this month for the new version to arrive. This is what I've been told about the new version so far....
Dunlop has just announced there will be an enhanced version of the original Direzza Sport Z1, called Direzza Sport Z1 Star Spec.
The primary enhancement in the Star Spec version is the tread compound, which comes up to operating temperature faster than the original while retaining the same ultimate performance levels. The current information is only available in Japanese, but we'll share more details as they become available.
Mixing compatibility is unconfirmed at this time.
More details will follow.
I just heard about this as well, for such a great price, im basically convinced on the Z1's now.
