Full Report: Road & Track tests stickier FR-S/BRZ tires - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

fistpoint · 06-30-2012, 10:02 PM

Quote:

Originally Posted by eriktherod

So that -2.3second gain WOULD have beat the Mustang V6 GT with track package at Willow Springs?

Funny, I thought the same thing when I first watched the video...heheh.

Quote:

Originally Posted by rice_classic

Say it with team: "Rolling Diameter"

Is anyone.. really anyone, surprised that stickier tires turned a faster lap time and "taller" tires affected gearing?

Of course not. But it's nice to see a professionally made test on a closed track versus random racers with other cars to skew the results.

RRnold · 06-30-2012, 10:25 PM

Makes sense since the oem tires are not ideal compounds for the track. I don't know why would go with a larger wheel to begin with.

Nospleen · 06-30-2012, 10:39 PM

Quote:

Originally Posted by eriktherod

So that -2.3second gain WOULD have beat the Mustang V6 GT with track package at Willow Springs?

There is no V6 GT...

eriktherod · 06-30-2012, 10:52 PM

Oh right, I always get them confused!

Panman · 06-30-2012, 11:59 PM

Well in Australia it'd automatically be illegal to change the rolling diameter that much - 225/40 18 would be a more sensible fit - Which is what I'm doing on mine.

Work CR-Kai emotion 18x7.5 + Toyo R1R = same weight as stock setup and within the legal 10% requirement.

Lonewolf · 07-01-2012, 04:09 PM

Quote:

Originally Posted by Panman

Well in Australia it'd automatically be illegal to change the rolling diameter that much - 225/40 18 would be a more sensible fit - Which is what I'm doing on mine.

Work CR-Kai emotion 18x7.5 + Toyo R1R = same weight as stock setup and within the legal 10% requirement.

Wow, who monitors these types of things? Do the police ticket you for this?

Panman · 07-01-2012, 05:19 PM

Quote:

Originally Posted by Lonewolf

Wow, who monitors these types of things? Do the police ticket you for this?

It's in the vehicle code for each state. Not only will the police ticket you, they can defect you for this if they feel like it.

The other impact is that your insurance company would not have to pay out if you had an accident as your vehicle is now effectively illegal.

bestwheelbase · 07-01-2012, 05:28 PM

This is why the Five Axis 19's are too too big. Fortunately, they have taken our feedback and will make the concept-inspired S7:F wheel in an 18" diameter if we get enough people interested. It is the best blend of style and speed. Confirmed to be faster, with sticky rubber, than the stock wheels/tires!

Go here to show your support for this gorgeous wheel in a much more versatile size: showthread.php?t=6811.

#87 · 07-01-2012, 06:10 PM

It's sad they don't want to make their wheels in 17 with a decent width.

Rampage · 07-01-2012, 07:10 PM

Car and Driver not R&T. Interesting video. I am surprised that the stock Mazda was faster than the stock Scion. I am guessing that it comes with better rubber from the factory?

Lasse · 07-02-2012, 01:38 AM

Quote:

Originally Posted by Rampage

Car and Driver not R&T. Interesting video. I am surprised that the stock Mazda was faster than the stock Scion. I am guessing that it comes with better rubber from the factory?

Yeah, you are right. Those "Prius" tires are very good tires in normal use, but they aren't fast by any means. Actually i'm surprised that changing only tires FR-S is faster than mazdaspeed3 and wrx.... Those cars have like 250 hp?

rice_classic · 07-02-2012, 02:31 AM

263hp & 280ft/lbs Curb weight: 3281. 1:11.7 tq/lb ratio or 1:12.4 HP/LB ratio.

So uh.. yeah, not bad for a 200hp NA car eh? FRS= 1:13.7

philstar · 07-04-2012, 09:07 AM

[ame="http://www.youtube.com/watch?v=hABzHIAfH8g&feature=player_embedded"]TOYOTA 86 2012 TRD HKS - YouTube[/ame]

interesting to watch, conflicting results where the 18" with 235 is faster than the 17" with 215, same tire.

brianc · 07-04-2012, 09:39 AM

It was a MazdaSpeed 3 wasn't it? 280lbs of tq go a long way.

There is actually a track review coming out of the new Genesis 2.0T R Spec vs the 2013 Scion FR-S. I was at the track when they filmed it. The Genesis consistently got faster lap times than the FR-S.

Handling is very important when it comes to performance but power is still an important aspect. You need both if you want quicker times.

It's not surprising a wider tire would yield slower lap times. I've noticed this on the track myself for 200hp cars. There just isn't enough power to justify a wider tire. The tires need to give a little bit for proper steering.

06-30-2012, 10:25 PM	#16
RRnold 2 wheel member Join Date: Feb 2010 Drives: JZA80, 997.1, Taco Location: SoCal->NorCal Posts: 4,330 Thanks: 1,318 Thanked 938 Times in 480 Posts Mentioned: 9 Post(s)	Makes sense since the oem tires are not ideal compounds for the track. I don't know why would go with a larger wheel to begin with. __________________

07-01-2012, 07:10 PM	#24
Rampage Senior Member/Old Fanboi Join Date: Nov 2011 Drives: 2000 2ZZ-GE MR2 Spyder HT Location: Back home in Ohio now Posts: 2,446 Thanks: 1,931 Thanked 2,014 Times in 915 Posts Mentioned: 16 Post(s)	Car and Driver not R&T. Interesting video. I am surprised that the stock Mazda was faster than the stock Scion. I am guessing that it comes with better rubber from the factory? __________________ So many modders have more cents than sense!

07-04-2012, 09:07 AM	#27
philstar Senior Member Join Date: Jan 2012 Drives: Argento FR-S Location: Chicago, IL Posts: 436 Thanks: 59 Thanked 349 Times in 144 Posts Mentioned: 8 Post(s)	[ame="http://www.youtube.com/watch?v=hABzHIAfH8g&feature=player_embedded"]TOYOTA 86 2012 TRD HKS - YouTube[/ame] interesting to watch, conflicting results where the 18" with 235 is faster than the 17" with 215, same tire. __________________

07-04-2012, 09:39 AM	#28
brianc OCD Join Date: Apr 2012 Drives: 2013 Scion FR-S Location: Toronto, Canada Posts: 293 Thanks: 0 Thanked 74 Times in 42 Posts Mentioned: 7 Post(s)	It was a MazdaSpeed 3 wasn't it? 280lbs of tq go a long way. There is actually a track review coming out of the new Genesis 2.0T R Spec vs the 2013 Scion FR-S. I was at the track when they filmed it. The Genesis consistently got faster lap times than the FR-S. Handling is very important when it comes to performance but power is still an important aspect. You need both if you want quicker times. It's not surprising a wider tire would yield slower lap times. I've noticed this on the track myself for 200hp cars. There just isn't enough power to justify a wider tire. The tires need to give a little bit for proper steering. __________________ OCD - obsessive car detailer!

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06-30-2012, 11:59 PM	#19
Panman Senior Member Join Date: Jun 2012 Drives: 86 GTS Location: Brisbane Australia Posts: 706 Thanks: 141 Thanked 275 Times in 176 Posts Mentioned: 13 Post(s)	Well in Australia it'd automatically be illegal to change the rolling diameter that much - 225/40 18 would be a more sensible fit - Which is what I'm doing on mine. Work CR-Kai emotion 18x7.5 + Toyo R1R = same weight as stock setup and within the legal 10% requirement.

07-01-2012, 05:28 PM	#22
bestwheelbase Join Date: Nov 2011 Drives: 1985 P-Type Location: Nashville, TN, USA Posts: 3,710 Thanks: 3,273 Thanked 2,058 Times in 1,098 Posts Mentioned: 50 Post(s)	This is why the Five Axis 19's are too too big. Fortunately, they have taken our feedback and will make the concept-inspired S7:F wheel in an 18" diameter if we get enough people interested. It is the best blend of style and speed. Confirmed to be faster, with sticky rubber, than the stock wheels/tires! Go here to show your support for this gorgeous wheel in a much more versatile size: showthread.php?t=6811.

07-01-2012, 06:10 PM	#23
#87 I usually post drunk Join Date: Oct 2009 Drives: BRZ Location: NY Posts: 1,487 Thanks: 15 Thanked 490 Times in 231 Posts Mentioned: 1 Post(s)	It's sad they don't want to make their wheels in 17 with a decent width.

07-02-2012, 02:31 AM	#26
rice_classic Senior Member Join Date: Jun 2012 Drives: Nevermorange FRS Location: Seattle, WA Posts: 4,175 Thanks: 758 Thanked 4,215 Times in 1,809 Posts Mentioned: 78 Post(s)	263hp & 280ft/lbs Curb weight: 3281. 1:11.7 tq/lb ratio or 1:12.4 HP/LB ratio. So uh.. yeah, not bad for a 200hp NA car eh? FRS= 1:13.7

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