have stock 2014 brz, will lighter wheels improve mpg? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Turbowned · 08-11-2018, 11:16 AM

Not significantly enough by themselves to notice a difference. Spend the same $1500 on a Civic VX or CRX HF and hypermile that thing instead of dailying the BRZ if you really want great mileage

brzultra · 08-11-2018, 02:58 PM

I'm probably going to put Michelin Primacy A/S on them for year round use, and comfort which I've put on other cars and enjoyed.

FRSBRZGT86FAN · 08-11-2018, 03:19 PM

Quote:

Originally Posted by brzultra

I'm probably going to put Michelin Primacy A/S on them for year round use, and comfort which I've put on other cars and enjoyed.

You'd yield a higher weight loss by getting a AAA membership and removing the spare and tools in the trunk. That's almost 30 lbs off the rear:
http://www.ft86club.com/forums/showthread.php?t=7881

As well as owners manual and trunk liner

you'd lose almost 36 lbs total.

Somerandom18 · 08-11-2018, 03:42 PM

Dropped off 6 lbs per corner from new wheels and tires. Didn't notice MPG going up at all.

Sent from my Pixel XL using Tapatalk

Yardjass · 08-11-2018, 09:37 PM

As previously stated, width and tire compound have more to do with fuel economy than anything. Also how inflated the tire is. Your weight will have some effect but it is much smaller and is usually offset and then some by the much larger effects of width or tire compound.

Decep · 08-12-2018, 09:36 PM

No measurable difference but you will have an automatic 2-3mpg loss if you dont keep the stock tires lol.

brzultra · 08-13-2018, 02:36 AM

Not about mpg, but interesting youtube video:

[ame="https://www.youtube.com/watch?v=AgMXNvu0eWI&t=240s"]https://www.youtube.com/watch?v=AgMXNvu0eWI&t=240s[/ame]

FRSBRZGT86FAN · 08-13-2018, 03:22 AM

Quote:

Originally Posted by brzultra

Not about mpg, but interesting youtube video:

Yea the editor of WR magazine and the one that does the binaural audio videos is really cool and into STX. Knows his stuff about making a decent handling car and is well versed and drives alot of cars every year.

Adam_L · 08-13-2018, 03:00 PM

I'd stick to a 215-45- 17 tire /wheel. The Michelins that come stock are solid for MPG. Find a nice forged 17" wheel (not too wide , I'm talking 17x7 or 17x7.5). Volk CE-28 comes to mind, they are about 13 lbs per wheel, 10-spoke design.

**Also no one had mentioned yet, but get some BRZ under panels for the aero gain, that will improve MPG... by how much, I'm not sure exactly.

brzultra · 07-26-2019, 12:57 AM

I'm getting about ~29mpg with about 50/50 hwy/city driving. Stock wheels, tires were never stock, as I purchased the car with about 35K miles on it. Tires are currently some econo Nittos in stock size. Am thinking of 17x8 RFP1s with 215/40x17 Premier A/S or Conti DWS to just leave on year round. Just daily driving with ability to put big brakes on if I feel the urge in a year or two.

08-13-2018, 03:00 PM	#23
Adam_L Senior Member Join Date: May 2016 Drives: '16 FR-S RS2 MT, '06 xA Polar MT Location: Central Coast California Posts: 666 Thanks: 1,131 Thanked 159 Times in 118 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I'd stick to a 215-45- 17 tire /wheel. The Michelins that come stock are solid for MPG. Find a nice forged 17" wheel (not too wide , I'm talking 17x7 or 17x7.5). Volk CE-28 comes to mind, they are about 13 lbs per wheel, 10-spoke design. **Also no one had mentioned yet, but get some BRZ under panels for the aero gain, that will improve MPG... by how much, I'm not sure exactly. __________________ Math is like Love, simple idea at first that quickly gets complicated

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08-11-2018, 02:58 PM	#16
brzultra Member Join Date: Aug 2018 Drives: 2014 BRZ Location: CA Posts: 13 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I'm probably going to put Michelin Primacy A/S on them for year round use, and comfort which I've put on other cars and enjoyed.

08-11-2018, 03:42 PM	#18
Somerandom18 Senior Member Join Date: Sep 2016 Drives: 2017 manual BRZ Location: USA Posts: 467 Thanks: 322 Thanked 178 Times in 111 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Dropped off 6 lbs per corner from new wheels and tires. Didn't notice MPG going up at all. Sent from my Pixel XL using Tapatalk

08-11-2018, 09:37 PM	#19
Yardjass Senior Member Join Date: Oct 2016 Drives: '14 Monogram, '95 Miata, '90 300ZX Location: VA Posts: 378 Thanks: 499 Thanked 253 Times in 144 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	As previously stated, width and tire compound have more to do with fuel economy than anything. Also how inflated the tire is. Your weight will have some effect but it is much smaller and is usually offset and then some by the much larger effects of width or tire compound.

08-12-2018, 09:36 PM	#20
Decep Senior Member Join Date: May 2017 Drives: 2013 FR-S Series 10 Location: CA Posts: 1,073 Thanks: 172 Thanked 497 Times in 326 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	No measurable difference but you will have an automatic 2-3mpg loss if you dont keep the stock tires lol.

08-13-2018, 02:36 AM	#21
brzultra Member Join Date: Aug 2018 Drives: 2014 BRZ Location: CA Posts: 13 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Not about mpg, but interesting youtube video: [ame="https://www.youtube.com/watch?v=AgMXNvu0eWI&t=240s"]https://www.youtube.com/watch?v=AgMXNvu0eWI&t=240s[/ame]

07-26-2019, 12:57 AM	#24
brzultra Member Join Date: Aug 2018 Drives: 2014 BRZ Location: CA Posts: 13 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I'm getting about ~29mpg with about 50/50 hwy/city driving. Stock wheels, tires were never stock, as I purchased the car with about 35K miles on it. Tires are currently some econo Nittos in stock size. Am thinking of 17x8 RFP1s with 215/40x17 Premier A/S or Conti DWS to just leave on year round. Just daily driving with ability to put big brakes on if I feel the urge in a year or two.

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