06-08-2015, 12:14 PM | #1 |
Private First Class
31
Rep 199
Posts |
Stock camber + RE-71Rs = waste of money
I figured I'd post this here for those of you who auto-x or are considering doing as much and looking for tires for said activity. Here's a photo of my front RE-71Rs after about 1000 miles of driving and 8 (yes EIGHT) 30-40 second autox runs. This was also done an asphalt lot that's pretty smooth, I'd hate to see what concrete would have done.
Car is currently stock (competing in SCCA F-Street class), but will be ordering an H&R front sway in the very near future. I had plans to use these tires for National Tour/Championship competition, but given the rate they've worn, that's not going to happen. I'm also running Hankook RS3v2s and they are not wearing in this same manner. I can definitely say for the money I paid for these I'm not thrilled at all. Mostly just posting this here in hopes it helps someone else make the decision to not put these on a stock car and autox with them. |
06-08-2015, 01:25 PM | #2 | |
Major General
1399
Rep 5,262
Posts |
Quote:
Not sure how camber would help with that.... Is that the front or rear? and what psi where you running? |
|
Appreciate
0
|
06-08-2015, 01:34 PM | #3 |
Private First Class
31
Rep 199
Posts |
This is on the front, the rears are perfect. More negative camber would keep the tires contact surface flat during cornering instead of rolling and driving on the outsides of the tires. The sway bar would help keep them flat, but it's still no substitute for negative camber.
The uneven wear is noticeable on the outside of all three major tread blocks. The the center block looks like this /| almost. With the outside of the block on the wear bars and chunking where the inside is still several MMs from the bars. I try to maintain enough PSI to keep the fronts from rolling over, so generally 35psi or so is the sweet spot for this tire and my Hankooks. |
Appreciate
0
|
06-08-2015, 02:52 PM | #4 | |
Major General
1399
Rep 5,262
Posts |
Quote:
I got -1.75 camber in the front with the M4 LCA's that should help.... what tire size are you running? are you square? |
|
Appreciate
0
|
06-08-2015, 03:01 PM | #5 | |
Private First Class
31
Rep 199
Posts |
Quote:
I'm fairly certain the LCAs would not be legal for the street class, which would bump me into a class that this car could not be even close to competitive in. The wording is vague though so I'll have to investigate it more. Unfortunately I'm not square 235/255. If BMW would have not opted for a stupid 7.5" wheel up front I'd be square, but I hated to downgrade the rear to match the front so I opted for as wide as possible on stock wheels. |
|
Appreciate
0
|
06-08-2015, 03:51 PM | #6 | |
Major General
1399
Rep 5,262
Posts |
Quote:
|
|
Appreciate
0
|
06-08-2015, 04:51 PM | #7 |
Private First Class
31
Rep 199
Posts |
Yes most of these issues stem from attempting to stay legal for the street class for auto-x. Simple tweaks would resolve the issues, however, they also bump me in class.
|
Appreciate
0
|
06-09-2015, 08:07 PM | #8 |
First Lieutenant
71
Rep 341
Posts |
Not good news. I was planning on getting these. Can you take more pics of the edges? It's really hard to tell much from this pic.
__________________
Current: E90 M3
Previous: 15' M235i, 12' E92 M3, 03' E46 M3, 98' E36 M3 4 dr, 95' E36 M3 2 dr All the above, missed and wish I kept them all. |
Appreciate
0
|
06-16-2015, 07:19 AM | #10 |
Brigadier General
827
Rep 3,856
Posts |
Add more camber?
|
Appreciate
0
|
07-05-2015, 05:19 PM | #12 |
Major
609
Rep 1,124
Posts |
I'm also square 235/45 on 27" Kosei's
__________________
Current: 2017 ///M2 manual 2004 E85 Z-4 manual
|
Appreciate
0
|
07-06-2015, 08:07 PM | #14 |
Major General
1399
Rep 5,262
Posts |
|
Appreciate
0
|
07-07-2015, 12:40 AM | #15 | |
Private
33
Rep 71
Posts |
Quote:
If you don't like the organizations rules, you can lobby for a change, or find another club to run with. For instance a single marque club that accepts other marques but doesn't classify them. In my area the SCCA region has a couple of local classes like "Open Street Prepared" where the only restriction is that the car has to at some point has to have been licensed, and a Vintage B Street Prepared class for older Corvettes that are no longer compliant with the SCCA national rules. This region also allows people to run as Fun Runs where no class specific rules apply. The local American Autocross Series has structured classes for Americav V8 cars but let's anyone else run in an "X" class as do the local BMW, Porsche, and Lotus clubs. You can join their clubs even if you don't own the proper brand of car and autocross with them. Personally, I still have a 1999 Miata that I have been auto crossing for the past 12 years, and trade off auto crossing that car or my M235i as the mood strikes me. When I run the M235i with the SCCA I can't run in F Street because of the square wheel/tire configuration. When I run the Miata with the BMWCCA I run in their "X" class. |
|
Appreciate
1
|
07-07-2015, 06:46 AM | #16 | |
Private First Class
31
Rep 199
Posts |
Quote:
You're questioning the stupidity of SCCA stock class rules. I don't have an answer for that. That's just the way it is. The LCA puts me into a class where I don't believe this car could ever be competitive. I suspect I'm in the minority here auto-xing the car, but still. This post should serve as a warning to those who do. I'll have my H&R front sway tomorrow, so we'll see how the tires handle the abuse with that on, though I'll definitely be flipping the tires on the rims before trying it out. |
|
Appreciate
0
|
07-07-2015, 11:03 AM | #17 | |
Major General
1399
Rep 5,262
Posts |
Quote:
|
|
Appreciate
0
|
07-07-2015, 11:17 AM | #18 | |
Lieutenant
153
Rep 446
Posts |
Quote:
Really hope the sway bar works out for you. Keep us posted! |
|
Appreciate
0
|
07-08-2015, 10:04 AM | #19 |
Brigadier General
827
Rep 3,856
Posts |
What kind of wear is this anyway, and what is it caused by? You say lack of camber, but it's hard to believe your Hankooks have no such wear after 10x the amount of runs, but these do after only 8. Did you drive them after you noticed this? And if you did, did your run times suffer? It could just be normal, as I think I saw similar wear on my pilot super sports when I was at a track event. A guy who runs the 128i in auto x (one of the modified classes) says the RE-71Rs are an incredible tire, with R-comp levels of grip, and superior to the Hankook RS3 which he has ran for most of his past events. And like someone else said, how could more negative camber help the wear of the center of the tread?
|
Appreciate
0
|
07-08-2015, 10:16 AM | #20 |
Private First Class
31
Rep 199
Posts |
I believe it's the compound that makes them so amazing, also makes them wear so poorly on a car with no negative camber. Negative camber will help flatten out the surface area of the tire under hard cornering, without it, you're scrubbing the outsides of the tire. With this car, where understeer is very present the fronts just get scrubbed down causing the chunking you see.
I haven't done anything but street driving on them since discovering this wear. Once I see how the front bar works this weekend, I'll have the fronts flipped on the wheels and try them again to get a gauge of how the bar will help with wear. |
Appreciate
0
|
07-08-2015, 11:01 AM | #21 | |
Brigadier General
827
Rep 3,856
Posts |
Quote:
|
|
Appreciate
0
|
07-08-2015, 01:41 PM | #22 |
Private First Class
31
Rep 199
Posts |
Yes, I wish I could get that kind of camber without jumping into another class. I also wish I could use these tires, because the little I did use them, I was very thrilled with them. ?However, burning through $500 worth of tires in 3-4 events is just not reasonable. Especially when the rears show minimal signs of wear.
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|