Michelin Pilot Super Sports - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

CSG David · 04-10-2013, 08:03 PM

Quote:

Originally Posted by RAWR BRZ

Could it be the diff and tranny motul gear 300 and 5-30 weight engine oil? I noticed less mpg with 5-30 then even more after i got my diff and tranny fluids flushed with gear 300 75-90 from motul. Could be just in my head though and i am just driving harder now.

It's possible, but remember the viscosity would be similar to what you would see with OEM fill and shouldn't affect the mileage when it's up to temp. Maybe during start up or cold temps.

Just an observation. We're not complaining. It gets way better MPG than the S2000 on the street though. The track MPG is very different however...

RAWR BRZ · 04-10-2013, 08:18 PM

Quote:

Originally Posted by CSG David

It's possible, but remember the viscosity would be similar to what you would see with OEM fill and shouldn't affect the mileage when it's up to temp. Maybe during start up or cold temps.

Just an observation. We're not complaining. It gets way better MPG than the S2000 on the street though. The track MPG is very different however...

Haha yeah I was just pointing out possible explanations. I feel like I am getting around only 260mi from full till the bar is at the very bottom past reserve light. It could be from my dowshifting to red light and perhaps I am accelerating to aggressively. Is the track mpg horrible compared to the S2000? At the track 20-25min sessions I am using up almost or at 1/4 tank of gas depending on the track.

ZDan · 04-10-2013, 08:21 PM

Mileage surely didn't change that much due to tires! Something else is up...

The idea that grippy street tires have higher rolling resistance is a bit of a myth. Extreme tires should have a slight advantage due to bigger tread blocks that squirm less, and often reduced tread depth also reducing squirm.

On a 2-wheel electric vehicle project, my company went to Pirelli for tires and asked for their lowest rolling resistance in our size, it was a serious sportbike tire. Cool...

FWIW, Dunlop Direzza ZII (starspec replacement) in 205/45-17 qualifies as LRR, "Low Rolling Resistance"!

That said, if you have *any* toe at all, a grippier tire will give more drag due to scrub.

runny_yolk · 04-10-2013, 08:30 PM

+1 for Pilot Super Sport. I had these on my Evo and they were great. Plus in stock BRZ size, they are cheaper than OEM tires.

Vonsamhain · 04-10-2013, 11:24 PM

Quote:

Originally Posted by CSG David

Our car lost around 7MPG switching from the OEM tires to the Z1 Star Specs or EHP equivalent.

Mathematically it would take more then that tire weight.
Driving style, ect would have to come into play too. Unless you managed a 12" wide tire

m.wood0213 · 04-10-2013, 11:56 PM

Super sports get the absolute BEST survey results at TireRack.com

CSG David · 04-11-2013, 12:05 PM

Quote:

Originally Posted by ZDan

Mileage surely didn't change that much due to tires! Something else is up...

The idea that grippy street tires have higher rolling resistance is a bit of a myth. Extreme tires should have a slight advantage due to bigger tread blocks that squirm less, and often reduced tread depth also reducing squirm.

On a 2-wheel electric vehicle project, my company went to Pirelli for tires and asked for their lowest rolling resistance in our size, it was a serious sportbike tire. Cool...

FWIW, Dunlop Direzza ZII (starspec replacement) in 205/45-17 qualifies as LRR, "Low Rolling Resistance"!

That said, if you have *any* toe at all, a grippier tire will give more drag due to scrub.

0 toe all around.

Quote:

Originally Posted by Vonsamhain

Mathematically it would take more then that tire weight.
Driving style, ect would have to come into play too. Unless you managed a 12" wide tire

Same driving style. We drive those same roads all the time to the different racetracks. We even draft off of our friends as an experiment as well. The CSG BRZ has gained 23k miles on the odometer in 6 months of activity.

dsgerbc · 04-11-2013, 12:48 PM

They are a decent tire. I doubt they are as good as tirerack ratings suggest.
Personally, I thought long and hard about these versus Conti DW and decided to give them a shot despite the price premium, mostly because I had DW's before and want to compate.

However, somehow they don't seem to work too well down under...

MVJ1975 · 04-11-2013, 12:54 PM

That Australian test puzzles me. I wonder if they get the same tires/tire compounds that we do. Clearly, some of them are different - the ContiSportContact 5 tires we get are typical lousy overpriced OEM tires that don't hold a candle to the DWs performance-wise.

siXXtoes · 04-11-2013, 03:00 PM

Just put on 225/45/17 PSS last week and they are great! I have noticed a slight decrease in gas MPG, but that is because I'm pushing on the gas a little harder with stickier tires

iaclimber4 · 04-11-2013, 11:47 PM

To those of you running the MPSS at stock size. Grippy is nice, but getting some oversteer around the corner is fun too. Essentially wanting to know if the car maintains its "fun" quality. I guess another way of looking at this is....is the car under-powered for the grip of the tires? Thanks....

Mgivens · 04-12-2013, 12:18 AM

Just put the stock size mpss on yesterday...all I can say is HUGE improvement in every way. I came from an e36 m3 with mpss and I instantly did not like the primacys. Here is what I noticed after the swap.

-about the same road noise
-significantly improved steering feel, love the sidewall response
-more traction, but not like a crazy amount, I've driven a frs with wider tires and its not like that
- I felt that the stock tires had a sort of "bouncy ness" that I feel the mpss took away
-vastly improved wet weather traction, living in seattle this is probably my main reason for getting the mpss

Overall I feel the mpss are a HUGE improvement over stock...they just "feel" better, less like a rental Camry and more like a 911

MVJ1975 · 04-12-2013, 08:18 AM

Quote:

Originally Posted by iaclimber4

To those of you running the MPSS at stock size. Grippy is nice, but getting some oversteer around the corner is fun too. Essentially wanting to know if the car maintains its "fun" quality. I guess another way of looking at this is....is the car under-powered for the grip of the tires? Thanks....

I can't speak to the MPSS specifically, but after going to grippier max performance summers the car does lose some of that tail-happy nature even in stock size. It's still possible to break the tail loose, it's just not quite as easy.

TimR · 04-12-2013, 08:55 AM

I would say the handling dynamic is the same, just with a higher threshold. Everything just happens at higher speed but breakaway is a little less abrupt. The seat of the pants dyno now makes me wish for another 50hp for the 1st time though

04-11-2013, 03:00 PM	#24
siXXtoes Ohh Snap Join Date: Jun 2012 Drives: Argento FR-S Location: San Diego Posts: 159 Thanks: 79 Thanked 35 Times in 26 Posts Mentioned: 0 Post(s)	Just put on 225/45/17 PSS last week and they are great! I have noticed a slight decrease in gas MPG, but that is because I'm pushing on the gas a little harder with stickier tires __________________ P&L EL headers and over-pipe, ARK Grip front-pipe and cat-back exhaust, Delicious Tune, Rays Gram Lights 57DR 17x9 +35 wrapped in Bridgestone RE11a's SoCal SD 86 Club Admin https://www.facebook.com/groups/socalsd86/

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04-10-2013, 08:21 PM	#17
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,672 Thanks: 1,439 Thanked 4,012 Times in 2,098 Posts Mentioned: 85 Post(s)	Mileage surely didn't change that much due to tires! Something else is up... The idea that grippy street tires have higher rolling resistance is a bit of a myth. Extreme tires should have a slight advantage due to bigger tread blocks that squirm less, and often reduced tread depth also reducing squirm. On a 2-wheel electric vehicle project, my company went to Pirelli for tires and asked for their lowest rolling resistance in our size, it was a serious sportbike tire. Cool... FWIW, Dunlop Direzza ZII (starspec replacement) in 205/45-17 qualifies as LRR, "Low Rolling Resistance"! That said, if you have any toe at all, a grippier tire will give more drag due to scrub.

04-10-2013, 08:30 PM	#18
runny_yolk Member Join Date: Mar 2013 Drives: minivan Location: Austin, TX Posts: 41 Thanks: 1 Thanked 58 Times in 9 Posts Mentioned: 0 Post(s)	+1 for Pilot Super Sport. I had these on my Evo and they were great. Plus in stock BRZ size, they are cheaper than OEM tires.

04-11-2013, 12:48 PM	#22
dsgerbc Senior Member Join Date: Jan 2012 Drives: BRZ(sold), STI Location: A2, MI Posts: 1,915 Thanks: 176 Thanked 419 Times in 241 Posts Mentioned: 11 Post(s)	They are a decent tire. I doubt they are as good as tirerack ratings suggest. Personally, I thought long and hard about these versus Conti DW and decided to give them a shot despite the price premium, mostly because I had DW's before and want to compate. However, somehow they don't seem to work too well down under...

04-11-2013, 11:47 PM	#25
iaclimber4 Member Join Date: Dec 2012 Drives: 2013 Whiteout FR-S MT Location: Florida Posts: 68 Thanks: 8 Thanked 21 Times in 11 Posts Mentioned: 0 Post(s)	To those of you running the MPSS at stock size. Grippy is nice, but getting some oversteer around the corner is fun too. Essentially wanting to know if the car maintains its "fun" quality. I guess another way of looking at this is....is the car under-powered for the grip of the tires? Thanks....

04-12-2013, 12:18 AM	#26
Mgivens Member Join Date: Apr 2013 Drives: Fr-s MT Ultramarine Location: Seattle Posts: 22 Thanks: 46 Thanked 17 Times in 10 Posts Mentioned: 1 Post(s)	Just put the stock size mpss on yesterday...all I can say is HUGE improvement in every way. I came from an e36 m3 with mpss and I instantly did not like the primacys. Here is what I noticed after the swap. -about the same road noise -significantly improved steering feel, love the sidewall response -more traction, but not like a crazy amount, I've driven a frs with wider tires and its not like that - I felt that the stock tires had a sort of "bouncy ness" that I feel the mpss took away -vastly improved wet weather traction, living in seattle this is probably my main reason for getting the mpss Overall I feel the mpss are a HUGE improvement over stock...they just "feel" better, less like a rental Camry and more like a 911

04-12-2013, 08:55 AM	#28
TimR Member Join Date: Mar 2013 Drives: Limited Lightning Red Location: Aurora Posts: 52 Thanks: 3 Thanked 16 Times in 13 Posts Mentioned: 2 Post(s)	I would say the handling dynamic is the same, just with a higher threshold. Everything just happens at higher speed but breakaway is a little less abrupt. The seat of the pants dyno now makes me wish for another 50hp for the 1st time though

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