|
Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack Specific topics relating to wheels and tires. |
|
Thread Tools | Search this Thread |
07-30-2019, 01:42 PM | #1 |
Senior Member
Join Date: Dec 2015
Drives: 2017_86 2016_frs 2007_335i
Location: victoria Canada
Posts: 172
Thanks: 16
Thanked 12 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
camber,toe,fittment question
i am on the stock suspension
running on rpf1 17x8 +45 re71r 245 40 17 both front and rear going to install a camber blot for less tire wearing on the front on the track here the peek for my front tire after one track day the number i am hope on alignment front -1.5 camber 0 toe rear -1.0 camber 0 toe anyone have the experience with this size setup and some camber could conform no rubbing issue or anything
__________________
YouTube Video:http://www.youtube.com/channel/UCBXFeelPFI8XzGese8Eug-g
ins:zayliu.jiayu Build Journal:http://www.ft86club.com/forums/showthread.php?t=136068 "if in doubt flat out" |
07-30-2019, 02:04 PM | #2 |
Senior Member
Join Date: Mar 2015
Drives: 2014 GT86
Location: Latvia, Riga
Posts: 4,333
Thanks: 696
Thanked 2,085 Times in 1,436 Posts
Mentioned: 53 Post(s)
Tagged: 1 Thread(s)
|
For track insufficient camber chosen imho. Due more front camber then stock aignment (of 0 camber front) you'll get less understeer, but insufficient camber for even -track- tire wear. In relation to track/HPDE usually i see something like -3 front/-2.5 rear camber, but of course it can be tire dependent and should be dialed right using temp readings of pyrometer.
|
The Following User Says Thank You to churchx For This Useful Post: | jayliu.jiayu@gamil.com (07-30-2019) |
07-30-2019, 02:16 PM | #3 |
Senior Member
Join Date: Jul 2012
Drives: 2013 Asphalt FR-S Manual
Location: Whitby, ON, Canada
Posts: 6,716
Thanks: 7,875
Thanked 3,351 Times in 2,134 Posts
Mentioned: 99 Post(s)
Tagged: 1 Thread(s)
|
-1.5* isn't going to be anywhere near enough to fully fix that, but it will help slightly. You'll need -3* at a minimum with those tires.
__________________
Light travels faster than sound, so people may appear to be bright until you hear them speak... flickr |
07-30-2019, 08:47 PM | #4 | |
Senior Member
Join Date: Dec 2015
Drives: 2017_86 2016_frs 2007_335i
Location: victoria Canada
Posts: 172
Thanks: 16
Thanked 12 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
I am worried about my off set on the wheel, it may leave me A very narrow space for me to get camber Will try -1.5 first, if it not work out for me , may consider Get a stronger ant-roll bar for front and rear
__________________
YouTube Video:http://www.youtube.com/channel/UCBXFeelPFI8XzGese8Eug-g
ins:zayliu.jiayu Build Journal:http://www.ft86club.com/forums/showthread.php?t=136068 "if in doubt flat out" |
|
07-30-2019, 08:52 PM | #5 |
Senior Member
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 11,172
Thanks: 18,174
Thanked 16,334 Times in 7,386 Posts
Mentioned: 108 Post(s)
Tagged: 0 Thread(s)
|
Anti roll bar is not going to help with that. More camber is the only real fix or just live with it.
|
07-30-2019, 09:21 PM | #6 |
Senior Member
Join Date: Jul 2012
Drives: 2013 Asphalt FR-S Manual
Location: Whitby, ON, Canada
Posts: 6,716
Thanks: 7,875
Thanked 3,351 Times in 2,134 Posts
Mentioned: 99 Post(s)
Tagged: 1 Thread(s)
|
I daily drive -3.2*F/-2.5*R, it's 100% fine. Even with a much stiffer sway bar front and rear, you'll still need more camber than -1.5* for track use on those tires, or just keep flipping the tires to get double the life as they wear like that.
__________________
Light travels faster than sound, so people may appear to be bright until you hear them speak... flickr |
07-30-2019, 11:56 PM | #7 |
Senior Member
Join Date: Mar 2015
Drives: 2014 GT86
Location: Latvia, Riga
Posts: 4,333
Thanks: 696
Thanked 2,085 Times in 1,436 Posts
Mentioned: 53 Post(s)
Tagged: 1 Thread(s)
|
Same for me, i also drove with similar track alignment whole year. Some cons of high camber - car has a bit more tendency to follow longitudinal grooves on road, and has slightly less grip in winter (where grip is lost way before lot of sidewall flex happens in cornering). My current choice is doing two "seasonal" realignments, -1.5/-1 for winter, -3/-2.5 for summer, alongside wheel/tire switch to/from winter ones, but IF you intend to drive whole year on same alignment AND if you'll go at least to 5+ trackdays in summer, most even tire wear will happen with track oriented alignment, despite your daily driven mileage being much longer. Choose optimal alignment depending on where and how much wear proportionally happens, not by simple mileage. Track wears tires (and brake pads) way more then daily driving does, 5-8 trackdays will wear 80-100% of thread, while 10-20K km of DD will wear only 5-20% of thread depth. Doing just 1 trackday per year? Then optimal camber will be less. Doing 5 or more? Use more track-oriented (of higher overall negative camber).
|
The Following User Says Thank You to churchx For This Useful Post: | Boomerang (07-31-2019) |
07-31-2019, 04:22 AM | #8 |
Senior Member
Join Date: May 2019
Drives: 2022 GR86
Location: Between Sonoma and Laguna Seca
Posts: 1,707
Thanks: 2,130
Thanked 1,298 Times in 718 Posts
Mentioned: 30 Post(s)
Tagged: 1 Thread(s)
|
Consider getting harder compound tires. RE71Rs are known to be too soft for the track. Also, 245/40 might be too flexible for 17x8, which most likely impacts the steering response, and possibly causing even more wear for the edge of the tire. Given that this set is pretty much toast now, try 225/45 next?
|
07-31-2019, 04:26 AM | #9 | |
Senior Member
Join Date: Dec 2015
Drives: 2017_86 2016_frs 2007_335i
Location: victoria Canada
Posts: 172
Thanks: 16
Thanked 12 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
3-4 track day with 5-6auto x this year I am not sure my current set up allow me that much camber Will talk to the alignment guy too see what is my current camber Most likely should be around 0, since it is stock Will try -1.5 if then And see how it goes , still have 2 track day this year Hopefully it allow me get -1.5 without rubbing. Camber blot May only give me that much I guess If the tire still can’t hold The sway bar will be my next I am sure that will help
__________________
YouTube Video:http://www.youtube.com/channel/UCBXFeelPFI8XzGese8Eug-g
ins:zayliu.jiayu Build Journal:http://www.ft86club.com/forums/showthread.php?t=136068 "if in doubt flat out" |
|
07-31-2019, 04:35 AM | #10 | |
Senior Member
Join Date: Dec 2015
Drives: 2017_86 2016_frs 2007_335i
Location: victoria Canada
Posts: 172
Thanks: 16
Thanked 12 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
225 45 is not same radius, and it is not usual tire size, going to be expensive to replace 215 45 17 will around $800 245 40 17 will around $950 May also use chalk on the tire to see what’s going on. “the old school way”
__________________
YouTube Video:http://www.youtube.com/channel/UCBXFeelPFI8XzGese8Eug-g
ins:zayliu.jiayu Build Journal:http://www.ft86club.com/forums/showthread.php?t=136068 "if in doubt flat out" |
|
07-31-2019, 04:54 AM | #11 |
Senior Member
Join Date: Mar 2015
Drives: 2014 GT86
Location: Latvia, Riga
Posts: 4,333
Thanks: 696
Thanked 2,085 Times in 1,436 Posts
Mentioned: 53 Post(s)
Tagged: 1 Thread(s)
|
jayliu.jiayu@gamil.com: for rear you'll need adjustable LCAs for any case. For front .. at stock height camberbolts (SPC 8135+KCA416) at both holes worth ~ -2.3 (if lowered then -2.5), if you add to those camberbolts something like powerflex (PFF69-801G) eccentric bushing, up to -3. For even more, extra camber can be added at top mount, for example eccentric rubber mount by Pedders , or pillowball camberplate. Or you can go right away to camberplates + eg. one camberbolt set.
|
07-31-2019, 06:49 AM | #12 |
Senior Member
Join Date: May 2019
Drives: 2022 GR86
Location: Between Sonoma and Laguna Seca
Posts: 1,707
Thanks: 2,130
Thanked 1,298 Times in 718 Posts
Mentioned: 30 Post(s)
Tagged: 1 Thread(s)
|
Just pointing out that 225/45 is a "classic" tire size on 17x8 wheels among 86 enthusiasts. I wouldn't worry to much about the radius, the difference is minuscule, and some say it actually makes the speedo more precise
|
The Following User Says Thank You to timurrrr For This Useful Post: | jayliu.jiayu@gamil.com (07-31-2019) |
07-31-2019, 09:00 AM | #13 |
Senior Member
Join Date: Jan 2018
Drives: Crapcan
Location: Oregon
Posts: 11,172
Thanks: 18,174
Thanked 16,334 Times in 7,386 Posts
Mentioned: 108 Post(s)
Tagged: 0 Thread(s)
|
|
07-31-2019, 10:14 AM | #14 | |
Senior Member
Join Date: Dec 2015
Drives: 2017_86 2016_frs 2007_335i
Location: victoria Canada
Posts: 172
Thanks: 16
Thanked 12 Times in 9 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
i think that is not the case keep in mind i am on the stock suspension which mean a lot of body roll get a strong sway bar will balance the left and right in the corner from my understanding, it will help reduce the weight loading on out side tire therefore, it helps reduce the tire wearing in the corner. [ame]http://www.youtube.com/watch?v=_liGnV3PTiQ[/ame] correct me if i am wrong
__________________
YouTube Video:http://www.youtube.com/channel/UCBXFeelPFI8XzGese8Eug-g
ins:zayliu.jiayu Build Journal:http://www.ft86club.com/forums/showthread.php?t=136068 "if in doubt flat out" |
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Question About Negative Camber: More Negative Camber == More Grip at Corner? | Figo | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 38 | 03-10-2019 02:08 PM |
Question about wheel/tire fittment | Jolt182 | Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack | 7 | 04-27-2015 12:51 AM |
Question about adjustable LCA's vs Camber Plates vs Camber Bolts | djdnz | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 13 | 03-27-2013 11:38 PM |
Camber Question | subaruatheart | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 10 | 03-24-2013 01:49 PM |
Fittment question | digital_assassin | Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack | 1 | 08-09-2012 12:21 AM |