Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB
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Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
-   Suspension | Chassis | Brakes -- Sponsored by 949 Racing (https://www.ft86club.com/forums/forumdisplay.php?f=59)
-   -   Going all out - how does the 86 compare? (https://www.ft86club.com/forums/showthread.php?t=61687)

Giblets 03-27-2014 02:09 AM
Quote:
Originally Posted by G-Man (Post 1627373)
this is the kind of thing i was referring too. If i had say $4500 to spend on suspension, with 255 rubber all round, how comparable will the car be to say a Cayman ect.

7thgear 03-27-2014 03:23 AM
Quote:
Originally Posted by Giblets (Post 1629186)
this is the kind of thing i was referring too. If i had say $4500 to spend on suspension, with 255 rubber all round, how comparable will the car be to say a Cayman ect.


if you leave the power as is, the 255's are gonna rob you of speed so the cayman will win

fatoni 03-27-2014 04:07 AM
Quote:
Originally Posted by 7thgear (Post 1629279)
if you leave the power as is, the 255's are gonna rob you of speed so the cayman will win
You sure about that? I just have a feeling that is pretty close

Captain Snooze 03-27-2014 06:27 AM
Tyre widths have been discussed many times here. Like everything else:compromise. From what I recollect reading optimum width depends on what you want to do with the car. Surprise!

Gunman 03-27-2014 07:23 AM
Quote:
Originally Posted by 7thgear (Post 1626924)
bushes is what they call bushings in pouch-land
Using "bush" instead of "bushing" isn't that uncommon in the racing industry.

Lavalover 03-27-2014 04:30 PM
The ability of any motor to accelerate a car is affected by wheel size and weight. A larger diameter wheel has a larger moment of inertia that must be overcome to accelerate. A heavy (presumably wider) rim-tire-combo will result in more sluggish acceleration, albeit with more grip. SO it is desirable if fitting wider wheels to try and find relatively lightweight rims and tires.

Caymans come with lightweight forged rims among other stock features that enhance performance.

7thgear 03-27-2014 04:32 PM
Quote:
Originally Posted by Lavalover (Post 1630432)
The ability of any motor to accelerate a car is affected by wheel size and weight. A larger diameter wheel has a larger moment of inertia that must be overcome to accelerate. A heavy (presumably wider) rim-tire-combo will result in more sluggish acceleration, albeit with more grip. SO it is desirable if fitting wider wheels to try and find relatively lightweight wheels and tires.

Caymans come with lightweight forged rims among other stock features that enhance performance.
you're thinking acceleration from standstil

the drag due to friction is what's gonna slow the car down in the straights, too much straightline grip, the actual weight will become somewhat irrelevant for accelration at over 100mph

Dave-ROR 03-27-2014 04:44 PM
Quote:
Originally Posted by Giblets (Post 1629186)
this is the kind of thing i was referring too. If i had say $4500 to spend on suspension, with 255 rubber all round, how comparable will the car be to say a Cayman ect.
Slower by far on anything but a very tight track.

And 225s I've found to be fastest of what I've tried so far without increasing power.. and with 225s I already catch up to GT3RS's with hoosiers in Turn 17 at sebring.. multiple car lengths I can gain in that turn alone.

And then they walk me by 15 lengths on the front straight as I check emails, texts, call friends, etc before Turn 1...

Does that explain how damn slow these things are in a straight line?

Lavalover 03-27-2014 04:47 PM
Nope. Changing the speed of any rotating mass requires torque and/or friction. Doesn't matter whether the mass is at rest or moving. My point is mainly that lightweight rotating mass equipment gives better automotive performance for very good reasons.

http://en.wikipedia.org/wiki/Moment_of_inertia
[url]

Racecomp Engineering 03-27-2014 07:49 PM
Compound is more important than width...that's the short version of the tire debate.

You can do a lot with 4500 bucks. Driving school would be a good start. ;)

- Andy


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