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Old 08-30-2005, 08:49 PM   #1
rkremer
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Default "Flip" RE070's?

So, after 300 track miles, 2 autocross schools, and 15 autocross events, my RE070's are looking "a bit" worn on the outside edge; in fact, that groove thats runs between the tread blocks is actually worn smooth in the middle, just above the edge of the sidewall. I don't want to buy tires at this point in the season, so I'd like to get 3 three more autocrosses and another track day out of these tires. Is there a consensus on flipping the RE070's?

I know that the tires are directional in the sense that there is an "outside" and an "inside". I would guess that wet performance might suffer a little by flipping the tires, but I'm only using them for autocross and track days, so I'm not concerned about the wet (worst case, I'd just run my Toyo Proxes4 in the wet). I've read of a couple of people flipping these tires--are there any adverse effects? Somewhere deep in the back of my mind I'm wondering if the tire is somehow reinforced on the "outside" edge and could lose structural stability if flipped. I have faint visions of bad things happening at around 130 on the front straight at Summit Point's main circuit; of course I tend to over analyze such things.

So, flipping the RE070: Good idea? Bad idea? Doesn't matter? Theories? Opinions?
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Old 08-30-2005, 09:13 PM   #2
express_wagon
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you should try and tell us

and directional "outside and inside" is known as assymetrical
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Old 08-30-2005, 09:46 PM   #3
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I was looking at mine after the last autocross and thinking the same thing.
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Old 08-30-2005, 10:46 PM   #4
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I was wondering about that also. I don't see why you couldn't do a more traditional rotation pattern w/ those tires since they are assymetric. I think it looks like the other side just flipped around.
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Old 08-31-2005, 10:00 AM   #5
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would changing sides accomplish the same thing as flipping without having to re mount them????
how do you like them for track and autocross?????????
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Old 08-31-2005, 11:11 AM   #6
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Quote:
Originally Posted by jr4jc
would changing sides accomplish the same thing as flipping without having to re mount them????
how do you like them for track and autocross?????????
Did you find a sale on question marks?


Changing sides won't accomplish the same as flipping.

The sidewall construction on the RE-070s is the same outside and inside. It's just the tread pattern (and possibly tread compound) that is different.

You'll lose some grip, but there is no danger to flipping them.
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Old 09-03-2005, 02:33 PM   #7
rkremer
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After taking a number of comments into consideration, I've flipped the tires and will try them out at tomorrow's autocross. I'll report back after the event....
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Old 09-05-2005, 11:21 PM   #8
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sorry, i missed that we were talking about sidewall wear, i was thinking about tread wear, cause i have done a couple tracks days on my tires and they went to the left predominantly, so my right tires are worn more than the left and have thought about swtching them from one side to the other, for future track events?!?!!!!!!!!
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Old 09-06-2005, 09:43 AM   #9
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my????????????????????????????????are free, no sale needed!!!!!!!!!!!!!!!!!!!!!!!
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Old 09-06-2005, 11:39 AM   #10
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and the re070's are *not* directional...
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Old 09-06-2005, 03:42 PM   #11
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Quote:
Originally Posted by jruben4
and the re070's are *not* directional...
..of which I am aware. After after researching this topic prior to my initial post, it is obvious that many people are confused by the tire terms such as asymmetrical, hence the reason that I referred to the tires as "directional in the sense that there is an 'outside' and an 'inside'," which should have been clear enough for the purposes of this thread. If it wasn't express_wagon did a nice job of clarifying in the first response to my thread.

Quote:
Originally Posted by jr4jc
how do you like them for track and autocross?
For my purposes, which boil down to arrive and drive without having to change tires at an event, the tires are great. They are clearly superior to many OEM tires and allow me to do reasonably well at the autocross while being perfectly able to handle some open track time. However, I believe there are better tires, both true street and R-compunds, available for less money, so I likely won't get another set of these.


With that said, I'm happy with the result of flipping the tires. While I also thought that there would be an issue with less grip, my experience was that I had quite a bit more grip than before, probably due to the degree of wear on the true outside edge of the tires. Now I'm back to figuring out the right pressures to run as the car is once again turning around the cones as opposed to sliding around the cones--and I still need to learn to back off the happy pedal a little bit, but that's an entirely different issue.

Regardless, it seems like the flipping process will extend the life of the tires through the end of the season, which was the goal; now I won't have to deal with a new tire decision until spring!

Thanks to all!

~
Rick...
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Old 09-07-2005, 09:49 AM   #12
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Old 09-07-2005, 10:42 AM   #13
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after flipping, add more camber
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Old 09-07-2005, 03:17 PM   #14
rkremer
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Quote:
Originally Posted by ChrisF
after flipping, add more camber
Add more camber as in more negative camber or as in less negative camber? I hadn't previously had any sort of sport alignment done, so I was just running whatever (again, not worried about the performance details until I was more familar with the sport and where I wanted to go).

I'll probably be getting the car aligned before my next event, so this subject has been floating in my head for a little while. The car is my daily driver, so I was already thinking of something in the -1 to -1.5 degree range; do you think I should be looking elsewhere? If so, why?
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Old 09-07-2005, 03:22 PM   #15
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Yes, the more negative camber in front the better. How was your rear wear? Also, check the rules for your autox class to find out if camber bolts are legal. If not, just work with the stock bolts and max them out evenly. The alignment on my car from the factory was hiddeous. A good alignment alone will do wonders for the car.

As far as daily driver camber, I'm running -2.5/-2 in mine with 0 toe. I had been running a little less in front before and still got edge wear at the track. Also keep an eye on tire pressures too to make sure you're not rollling over.
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Old 09-23-2005, 12:41 PM   #16
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fyi-- firestone bridgestone dealers do a life time alignment for a little over $100
i asked them if that means i can come in over and over and often , even if i am trying a setup and want to change it frequently. and they said yes, the only catch is they are always backed up and it takes awhile to get it done, but it is near lots of resturants so we go eat when they work on my car. so far they have done a very good job too.
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